The document discusses the CryptoLocker ransomware threat and strategies to defend against it. CryptoLocker infects systems by tricking users into executing malicious files, then encrypts files using a randomly generated key. It threatens to delete the encryption key unless a ransom is paid. The best defenses include application whitelisting, limiting administrator privileges, firewalls, intrusion detection systems and keeping systems patched and backed up. In the event of infection, the affected machine should be isolated while restoring data from backups. Ongoing user education and security policies are also important to mitigate the ransomware risk.
This document discusses network risks and vulnerabilities. It begins by defining vulnerabilities as software flaws or misconfigurations that weaken security. It then examines various types of vulnerabilities like design flaws, viruses, impersonation, worms, port scanning, man-in-the-middle attacks, denial-of-service attacks. The document also covers network risk assessment methodology and impact analysis. It concludes with a brief mention of network risk mitigation as a way to reduce risks.
The document provides information about the Certified Computer Security Analyst (CCSA) program and training. It discusses the trainer, Semi Yulianto's qualifications and experience working with various security training and consulting organizations. It also lists some of the key topics covered in the CCSA training program, including vulnerabilities assessment, penetration testing methodology, security tools, and investigating vulnerabilities.
- What is WannaCry?
- What are its Worm, Exploit, Botnet, Backdoor, Ransomware characteristics?
- WannaCry and the end of the world?
- Malware Prevention?
- Is it a big deal? Comparison with other malware
- WannaCry, a Military and Political Perspective
This document discusses the cyber attack lifecycle and strategies for advanced adversaries. It describes the typical stages an adversary goes through, including reconnaissance, exploitation, delivery, installation, command and control, and actions on objectives. The adversary's goal is to accomplish their task and exfiltrate information without detection. New strategic approaches are needed to detect threats across all points, including the network edge, endpoints, mobile devices, and clouds. Security controls must innovate faster to reduce the vulnerability gap against sophisticated global attackers.
DTS Solution - Yehia Mamdouh - Release your pet worm on your infrastructure....Shah Sheikh
This document introduces BetWorm, a defensive worm created by the author to perform penetration testing and security assessments from an attacker's perspective within an organization's internal network. BetWorm spreads through authenticated SSH connections and maps vulnerable systems by collecting information, detecting weaknesses, analyzing attack surfaces, and emulating malicious connections. The author explains how BetWorm currently functions and future plans to improve its abilities to more quickly scan networks, save collected data to a command and control server, include a local web server, support both Linux and Windows, and provide a graphical user interface. A link is provided to access BetWorm's source code on GitHub.
IRJET- Study of Hacking and Ethical HackingIRJET Journal
This document discusses hacking and ethical hacking. It defines hacking as unauthorized access to a computer system or network, while ethical hacking involves testing a system's security with its owner's permission. It describes different types of hackers, including white hat (ethical), black hat, and grey hat hackers. The document also outlines the process of ethical hacking, including reconnaissance, scanning, gaining access, maintaining access, clearing tracks, and reporting. Finally, it discusses the advantages and disadvantages of hacking, and explains that ethical hacking can help identify vulnerabilities to better secure systems.
Recently a ransomware variant titled “WannaCry” has infected thousands of unpatched endpoints worldwide.This quick presentation will provide a synopsis of what this threat might mean for end users and what actions can be taken in response to this new information.
Wajug: Cyber war, Cyber Attacks and Ethical Hacking - Frédéric de Pauw - Dece...wajug
An attacker conducts a penetration test against a target organization. They first find vulnerabilities in the organization's SAP BO deployment, including default credentials and directory traversal issues, which allows them to upload a backdoored web service. This gives them code execution on a web server. To further their access, the attacker creates a privileged temporary account and establishes a reverse SSH tunnel to bypass blocked ports to access systems on the internal network.
This document discusses network risks and vulnerabilities. It begins by defining vulnerabilities as software flaws or misconfigurations that weaken security. It then examines various types of vulnerabilities like design flaws, viruses, impersonation, worms, port scanning, man-in-the-middle attacks, denial-of-service attacks. The document also covers network risk assessment methodology and impact analysis. It concludes with a brief mention of network risk mitigation as a way to reduce risks.
The document provides information about the Certified Computer Security Analyst (CCSA) program and training. It discusses the trainer, Semi Yulianto's qualifications and experience working with various security training and consulting organizations. It also lists some of the key topics covered in the CCSA training program, including vulnerabilities assessment, penetration testing methodology, security tools, and investigating vulnerabilities.
- What is WannaCry?
- What are its Worm, Exploit, Botnet, Backdoor, Ransomware characteristics?
- WannaCry and the end of the world?
- Malware Prevention?
- Is it a big deal? Comparison with other malware
- WannaCry, a Military and Political Perspective
This document discusses the cyber attack lifecycle and strategies for advanced adversaries. It describes the typical stages an adversary goes through, including reconnaissance, exploitation, delivery, installation, command and control, and actions on objectives. The adversary's goal is to accomplish their task and exfiltrate information without detection. New strategic approaches are needed to detect threats across all points, including the network edge, endpoints, mobile devices, and clouds. Security controls must innovate faster to reduce the vulnerability gap against sophisticated global attackers.
DTS Solution - Yehia Mamdouh - Release your pet worm on your infrastructure....Shah Sheikh
This document introduces BetWorm, a defensive worm created by the author to perform penetration testing and security assessments from an attacker's perspective within an organization's internal network. BetWorm spreads through authenticated SSH connections and maps vulnerable systems by collecting information, detecting weaknesses, analyzing attack surfaces, and emulating malicious connections. The author explains how BetWorm currently functions and future plans to improve its abilities to more quickly scan networks, save collected data to a command and control server, include a local web server, support both Linux and Windows, and provide a graphical user interface. A link is provided to access BetWorm's source code on GitHub.
IRJET- Study of Hacking and Ethical HackingIRJET Journal
This document discusses hacking and ethical hacking. It defines hacking as unauthorized access to a computer system or network, while ethical hacking involves testing a system's security with its owner's permission. It describes different types of hackers, including white hat (ethical), black hat, and grey hat hackers. The document also outlines the process of ethical hacking, including reconnaissance, scanning, gaining access, maintaining access, clearing tracks, and reporting. Finally, it discusses the advantages and disadvantages of hacking, and explains that ethical hacking can help identify vulnerabilities to better secure systems.
Recently a ransomware variant titled “WannaCry” has infected thousands of unpatched endpoints worldwide.This quick presentation will provide a synopsis of what this threat might mean for end users and what actions can be taken in response to this new information.
Wajug: Cyber war, Cyber Attacks and Ethical Hacking - Frédéric de Pauw - Dece...wajug
An attacker conducts a penetration test against a target organization. They first find vulnerabilities in the organization's SAP BO deployment, including default credentials and directory traversal issues, which allows them to upload a backdoored web service. This gives them code execution on a web server. To further their access, the attacker creates a privileged temporary account and establishes a reverse SSH tunnel to bypass blocked ports to access systems on the internal network.
The document discusses various tools that can be integrated within the AlienVault USM platform. It categorizes the tools as either active or passive. Active tools generate their own network traffic while passive tools analyze existing network traffic without generating any themselves. It then provides details on the purpose and functionality of each tool, including Snort for intrusion detection, Ntop for network monitoring, Nagios for availability monitoring, OpenVas for vulnerability scanning, and others. It explains how each tool can be used within the AlienVault platform.
Security Attack Analysis for Finding and Stopping Network AttacksSavvius, Inc
Network breaches are on the rise, and the consequences are getting more dire. Needless to say, you don't want to be the next Target.You've invested in security tools like firewalls and IPS systems. But today's stealthy attacks can still get through. When you suspect an attack, you need your insurance policy—network forensics.
In this seminar, you'll learn how network forensics—network recording along with powerful search and analysis tools—can enable your in-house security team to track down, verify, and characterize attacks.
You'll also learn about the requirements for effective forensics on today's 10G and 40G networks.
And you'll learn some best practices for configuring captures to help you and your team pinpoint and remediate anomalous behavior that could signal an attack.
WannaCry Ransomware Attack: What to Do NowIBM Security
View on-demand webinar: http://bit.ly/2qoNQ8v
What you need to know and how to protect against the WannaCry Ransomware Attack, the largest coordinated cyberattack of its kind. WannaCry has already crippled critical infrastructure and multiple hospitals and telecommunications organizations, infecting 100s of thousands of endpoints in over 100 countries. In this on-demand webinar, we discuss the anatomy of this unprecedented attack and IBM Researchers share expert insights into what you can do now to protect your organization from this attack and the next one.
Patch, patch and patch !
This has been the go-to mantra of security professionals and the recent WannaCry ransomware attack has highlighted its importance once again.
Seqrite EPS with Centralized Patch Management -
Proven Security Approach for Ransomware Protection
The document summarizes common methods used to attack Windows NT operating systems and gain unauthorized access. It describes exploits like the "getadmin" hack that allows gaining administrator privileges by taking advantage of flaws in how the system handles memory addresses and permissions. Other attacks aim to crack encrypted passwords stored in the registry or conduct denial-of-service attacks by overwhelming systems with fragmented packets or network loops. The document stresses the importance of maintaining up-to-date security patches, implementing intrusion detection, and having policies and tools to constantly monitor for the latest threats.
The document discusses penetration testing using Metasploit. It begins by defining penetration testing and why it is important for security. It then provides an overview of Metasploit, explaining what it is and some key terminology. The document demonstrates a sample penetration test against a virtual network, using Metasploit to exploit a Windows vulnerability. It evaluates the impact and recommends countermeasures like patching, code reviews, and periodic testing. The goal is to show how Metasploit can be used to test network security by simulating real-world attacks.
The document analyzes the 2011 hack of RSA Security and subsequent breach of Lockheed Martin's network. It describes how hackers were able to gain access to RSA through a phishing email containing a zero-day Flash exploit. This allowed them to steal RSA's SecurID token secrets and user data. Months later, the same hackers were able to access Lockheed Martin's network using stolen SecurID credentials. The document outlines the attack methods used at each company and lessons learned, including Lockheed Martin's implementation of an internal cyber defense system called the Cyber Kill Chain to prevent future data exfiltration.
Wannacry / WannaCrypt ransomware spreads laterally between computers on the same LAN using the ETERNALBLUE exploit of SMB protocol vulnerabilities in Windows systems. It encrypts files on infected systems with various extensions and demands ransom payments in bitcoin. Users and organizations are advised to apply Windows patches, enable firewalls, practice backups, and follow other best practices to prevent infection and data loss from this ransomware.
The attackers used a spear phishing campaign targeting RSA employees to gain access to the RSA network. They sent emails appearing to come from a job site with a malicious Excel spreadsheet attachment exploiting Flash vulnerabilities. This allowed the attackers to install backdoors and remote access tools on the network. They were then able to escalate privileges and extract encrypted password-protected files containing user SecurID tokens. The stolen data was suspected to be used in an attempted attack on Lockheed Martin, though their security measures detected the threat. In response, RSA improved security including issuing new SecurID tokens and launching incident response services.
The document discusses the need for network security. It notes that more information is being created and shared digitally, creating vulnerabilities. The objectives are to understand security services like confidentiality and integrity, be aware of threats like viruses and hacking, and realize why comprehensive security programs are necessary. Such programs include elements like strong passwords, antivirus software, firewalls, backups, auditing, and user training. Cryptography and firewalls are discussed as important security countermeasures. The goal is to protect systems and data from increasing security risks on interconnected networks.
The evolution of ransomware began in 1989 with the AIDS Trojan virus, moving to more advanced encryption techniques over time. By 2013, CryptoLocker used strong encryption via RSA 2048-bit keys and Bitcoin payments, making ransomware payments hard to trace. Later strains like CryptoWall and Locky continued advancing techniques to infect more systems and ensure payment, demonstrating ransomware as an ongoing cybersecurity threat.
WannaCry and Not-Petya Ransomware were exploited due to the vulnerability in Microsoft's SMB. Microsoft released a patch MS17-010 on March 14th 2017 to address this vulnerability. However since most of the Microsoft users have not updated this patch and due to the ongoing Phishing attacks these Ransomware attacks are on the rise.
Security+ Guide to Network Security Fundamentals, 3rd Edition, by Mark Ciampa
Knowledge and skills required for Network Administrators and Information Technology professionals to be aware of security vulnerabilities, to implement security measures, to analyze an existing network environment in consideration of known security threats or risks, to defend against attacks or viruses, and to ensure data privacy and integrity. Terminology and procedures for implementation and configuration of security, including access control, authorization, encryption, packet filters, firewalls, and Virtual Private Networks (VPNs).
CNIT 120: Network Security
http://samsclass.info/120/120_S09.shtml#lecture
Policy: http://samsclass.info/policy_use.htm
Many thanks to Sam Bowne for allowing to publish these presentations.
RSAC 2021 Spelunking Through the Steps of a Control System HackDan Gunter
An industrial control system was hacked through a multi-stage attack. An attacker first spearphished a user to gain access to the network. They then used remote desktop and remote access software to access the HMI and manipulate control points, disrupting industrial processes. The attack demonstrated tactics like phishing, credential dumping, lateral movement, and control manipulation. Improving security monitoring, hardening systems, limiting access, and increasing user awareness could help prevent similar attacks.
More than 80% of Today’s Top Malware Arrives via Web. More than 80% of Today’s Top Malware Arrives via Web. And
Security Demands on cloud service providers will increase. See the rest of Trend Micro's predictions for 2011.
Recent ransomware cyberattack on a major oil pipeline caused gas prices to surge and gas stations in multiple states to experience shortages due to a several-day outage resulting from the attack.
Patents are a good information resource for obtaining the state of the art of AI technology innovations for defending against the ransomware attacks. Patent information can provide many valuable insights that can be exploited for developing and implementing new technologies. Patents can also be exploited to identify new product/service development opportunities.
Ransomware has not gone away. In fact, ransomware criminals have evolved their malware so they can encrypt more data before detection and increase the likelihood you will pay their ransom.
1. Ransomware encrypts a victim's files and demands ransom payment in an untraceable currency like bitcoin to decrypt the files. It has become a growing threat costing millions each year.
2. The document discusses different types of ransomware like crypto ransomware, locker ransomware, and MBR ransomware. It also outlines how ransomware spreads via phishing emails, drive-by downloads, and malware advertising.
3. The document provides tips to prevent ransomware attacks like backing up data, whitelisting applications, keeping software updated, and using ad-blockers. It concludes that following prevention best practices can help mitigate ransomware attacks.
As soluções da NetWitness capturam todos os dados que circulam na rede e os contextualizam, filtrando o que pode ser crítico ou não. O usuario pode ver quem está indo aonde e vendo o quê.
Hands on Security, Disrupting the Kill Chain, SplunkLive! AustinSplunk
Splunk for Security Workshop
Join our Splunk Security Experts and learn how to use Splunk Enterprise in a live, hands-on incident investigation session. We'll use Splunk to disrupt an adversary's Kill Chain by finding the Actions on Intent, Exploitation Methods, and Reconnaissance Tactics used against a simulated organization. Data investigated will include threat list intelligence feeds, endpoint activity logs, e-mail logs, and web access logs. This session is a must for all security experts! Please bring your laptop as this is a hands-on session.
Ransomware is a type of malware that encrypts a victim's files and demands ransom payment in order to decrypt the files. It infects devices through vulnerabilities and techniques like phishing emails. Once installed, it maps and encrypts files before displaying a ransom note. Victims can protect themselves by backing up data, patching systems, and using antivirus software.
Keyloggers record keyboard inputs to steal credentials and sensitive information. They can be installed through malicious websites or applications. Users should verify email and website legitimacy, use strong unique passwords, and avoid entering information on public devices. Antivirus software and firewalls can help prevent keylogging.
Rootkits are difficult to detect malware that gains control of systems
Kudler Fine Foods IT Security Report And Presentation –...Lana Sorrels
The document discusses network security for a small accounting firm. It proposes implementing a network with firewall protection, wireless access points, antivirus software, and user training. A vulnerability assessment is recommended to identify security risks before deploying the network. The network design aims to protect client financial data from theft or loss while enabling file sharing and internet access for employees.
The document discusses various tools that can be integrated within the AlienVault USM platform. It categorizes the tools as either active or passive. Active tools generate their own network traffic while passive tools analyze existing network traffic without generating any themselves. It then provides details on the purpose and functionality of each tool, including Snort for intrusion detection, Ntop for network monitoring, Nagios for availability monitoring, OpenVas for vulnerability scanning, and others. It explains how each tool can be used within the AlienVault platform.
Security Attack Analysis for Finding and Stopping Network AttacksSavvius, Inc
Network breaches are on the rise, and the consequences are getting more dire. Needless to say, you don't want to be the next Target.You've invested in security tools like firewalls and IPS systems. But today's stealthy attacks can still get through. When you suspect an attack, you need your insurance policy—network forensics.
In this seminar, you'll learn how network forensics—network recording along with powerful search and analysis tools—can enable your in-house security team to track down, verify, and characterize attacks.
You'll also learn about the requirements for effective forensics on today's 10G and 40G networks.
And you'll learn some best practices for configuring captures to help you and your team pinpoint and remediate anomalous behavior that could signal an attack.
WannaCry Ransomware Attack: What to Do NowIBM Security
View on-demand webinar: http://bit.ly/2qoNQ8v
What you need to know and how to protect against the WannaCry Ransomware Attack, the largest coordinated cyberattack of its kind. WannaCry has already crippled critical infrastructure and multiple hospitals and telecommunications organizations, infecting 100s of thousands of endpoints in over 100 countries. In this on-demand webinar, we discuss the anatomy of this unprecedented attack and IBM Researchers share expert insights into what you can do now to protect your organization from this attack and the next one.
Patch, patch and patch !
This has been the go-to mantra of security professionals and the recent WannaCry ransomware attack has highlighted its importance once again.
Seqrite EPS with Centralized Patch Management -
Proven Security Approach for Ransomware Protection
The document summarizes common methods used to attack Windows NT operating systems and gain unauthorized access. It describes exploits like the "getadmin" hack that allows gaining administrator privileges by taking advantage of flaws in how the system handles memory addresses and permissions. Other attacks aim to crack encrypted passwords stored in the registry or conduct denial-of-service attacks by overwhelming systems with fragmented packets or network loops. The document stresses the importance of maintaining up-to-date security patches, implementing intrusion detection, and having policies and tools to constantly monitor for the latest threats.
The document discusses penetration testing using Metasploit. It begins by defining penetration testing and why it is important for security. It then provides an overview of Metasploit, explaining what it is and some key terminology. The document demonstrates a sample penetration test against a virtual network, using Metasploit to exploit a Windows vulnerability. It evaluates the impact and recommends countermeasures like patching, code reviews, and periodic testing. The goal is to show how Metasploit can be used to test network security by simulating real-world attacks.
The document analyzes the 2011 hack of RSA Security and subsequent breach of Lockheed Martin's network. It describes how hackers were able to gain access to RSA through a phishing email containing a zero-day Flash exploit. This allowed them to steal RSA's SecurID token secrets and user data. Months later, the same hackers were able to access Lockheed Martin's network using stolen SecurID credentials. The document outlines the attack methods used at each company and lessons learned, including Lockheed Martin's implementation of an internal cyber defense system called the Cyber Kill Chain to prevent future data exfiltration.
Wannacry / WannaCrypt ransomware spreads laterally between computers on the same LAN using the ETERNALBLUE exploit of SMB protocol vulnerabilities in Windows systems. It encrypts files on infected systems with various extensions and demands ransom payments in bitcoin. Users and organizations are advised to apply Windows patches, enable firewalls, practice backups, and follow other best practices to prevent infection and data loss from this ransomware.
The attackers used a spear phishing campaign targeting RSA employees to gain access to the RSA network. They sent emails appearing to come from a job site with a malicious Excel spreadsheet attachment exploiting Flash vulnerabilities. This allowed the attackers to install backdoors and remote access tools on the network. They were then able to escalate privileges and extract encrypted password-protected files containing user SecurID tokens. The stolen data was suspected to be used in an attempted attack on Lockheed Martin, though their security measures detected the threat. In response, RSA improved security including issuing new SecurID tokens and launching incident response services.
The document discusses the need for network security. It notes that more information is being created and shared digitally, creating vulnerabilities. The objectives are to understand security services like confidentiality and integrity, be aware of threats like viruses and hacking, and realize why comprehensive security programs are necessary. Such programs include elements like strong passwords, antivirus software, firewalls, backups, auditing, and user training. Cryptography and firewalls are discussed as important security countermeasures. The goal is to protect systems and data from increasing security risks on interconnected networks.
The evolution of ransomware began in 1989 with the AIDS Trojan virus, moving to more advanced encryption techniques over time. By 2013, CryptoLocker used strong encryption via RSA 2048-bit keys and Bitcoin payments, making ransomware payments hard to trace. Later strains like CryptoWall and Locky continued advancing techniques to infect more systems and ensure payment, demonstrating ransomware as an ongoing cybersecurity threat.
WannaCry and Not-Petya Ransomware were exploited due to the vulnerability in Microsoft's SMB. Microsoft released a patch MS17-010 on March 14th 2017 to address this vulnerability. However since most of the Microsoft users have not updated this patch and due to the ongoing Phishing attacks these Ransomware attacks are on the rise.
Security+ Guide to Network Security Fundamentals, 3rd Edition, by Mark Ciampa
Knowledge and skills required for Network Administrators and Information Technology professionals to be aware of security vulnerabilities, to implement security measures, to analyze an existing network environment in consideration of known security threats or risks, to defend against attacks or viruses, and to ensure data privacy and integrity. Terminology and procedures for implementation and configuration of security, including access control, authorization, encryption, packet filters, firewalls, and Virtual Private Networks (VPNs).
CNIT 120: Network Security
http://samsclass.info/120/120_S09.shtml#lecture
Policy: http://samsclass.info/policy_use.htm
Many thanks to Sam Bowne for allowing to publish these presentations.
RSAC 2021 Spelunking Through the Steps of a Control System HackDan Gunter
An industrial control system was hacked through a multi-stage attack. An attacker first spearphished a user to gain access to the network. They then used remote desktop and remote access software to access the HMI and manipulate control points, disrupting industrial processes. The attack demonstrated tactics like phishing, credential dumping, lateral movement, and control manipulation. Improving security monitoring, hardening systems, limiting access, and increasing user awareness could help prevent similar attacks.
More than 80% of Today’s Top Malware Arrives via Web. More than 80% of Today’s Top Malware Arrives via Web. And
Security Demands on cloud service providers will increase. See the rest of Trend Micro's predictions for 2011.
Recent ransomware cyberattack on a major oil pipeline caused gas prices to surge and gas stations in multiple states to experience shortages due to a several-day outage resulting from the attack.
Patents are a good information resource for obtaining the state of the art of AI technology innovations for defending against the ransomware attacks. Patent information can provide many valuable insights that can be exploited for developing and implementing new technologies. Patents can also be exploited to identify new product/service development opportunities.
Ransomware has not gone away. In fact, ransomware criminals have evolved their malware so they can encrypt more data before detection and increase the likelihood you will pay their ransom.
1. Ransomware encrypts a victim's files and demands ransom payment in an untraceable currency like bitcoin to decrypt the files. It has become a growing threat costing millions each year.
2. The document discusses different types of ransomware like crypto ransomware, locker ransomware, and MBR ransomware. It also outlines how ransomware spreads via phishing emails, drive-by downloads, and malware advertising.
3. The document provides tips to prevent ransomware attacks like backing up data, whitelisting applications, keeping software updated, and using ad-blockers. It concludes that following prevention best practices can help mitigate ransomware attacks.
As soluções da NetWitness capturam todos os dados que circulam na rede e os contextualizam, filtrando o que pode ser crítico ou não. O usuario pode ver quem está indo aonde e vendo o quê.
Hands on Security, Disrupting the Kill Chain, SplunkLive! AustinSplunk
Splunk for Security Workshop
Join our Splunk Security Experts and learn how to use Splunk Enterprise in a live, hands-on incident investigation session. We'll use Splunk to disrupt an adversary's Kill Chain by finding the Actions on Intent, Exploitation Methods, and Reconnaissance Tactics used against a simulated organization. Data investigated will include threat list intelligence feeds, endpoint activity logs, e-mail logs, and web access logs. This session is a must for all security experts! Please bring your laptop as this is a hands-on session.
Ransomware is a type of malware that encrypts a victim's files and demands ransom payment in order to decrypt the files. It infects devices through vulnerabilities and techniques like phishing emails. Once installed, it maps and encrypts files before displaying a ransom note. Victims can protect themselves by backing up data, patching systems, and using antivirus software.
Keyloggers record keyboard inputs to steal credentials and sensitive information. They can be installed through malicious websites or applications. Users should verify email and website legitimacy, use strong unique passwords, and avoid entering information on public devices. Antivirus software and firewalls can help prevent keylogging.
Rootkits are difficult to detect malware that gains control of systems
Kudler Fine Foods IT Security Report And Presentation –...Lana Sorrels
The document discusses network security for a small accounting firm. It proposes implementing a network with firewall protection, wireless access points, antivirus software, and user training. A vulnerability assessment is recommended to identify security risks before deploying the network. The network design aims to protect client financial data from theft or loss while enabling file sharing and internet access for employees.
This document outlines a security plan for ALPHA organization. It discusses how the organization uses encryption and a public key infrastructure (PKI) to secure data and communications. The PKI issues digital certificates containing public/private key pairs to authenticate users and applications. Symmetric and asymmetric ciphers are used to encrypt data during transmission and storage. The plan also covers best practices for secure software development, database security, and defending against common cipher attacks.
Exploits Attack on Windows VulnerabilitiesAmit Kumbhar
The document discusses exploiting vulnerabilities using Metasploits, including an introduction to exploits and payloads, an overview of the Metasploit framework, examples of using exploits like windows/dcerpc/ms03_026_dcom with payloads like windows/meterpreter/bind_tcp, and a discussion of pivoting and using compromised systems to attack other targets on the same network.
Understanding the term hacking as any unconventional way of interacting with some system it is easy to conclude that there are enormous number of people who hacked or tried to hack someone or something. The article, as result of author research, analyses hacking from different points of view, including hacker's point of view as well as the defender's point of view. Here are discussed questions like: Who are the hackers? Why do people hack? Law aspects of hacking, as well as some economic issues connected with hacking. At the end, some questions about victim protection are discussed together with the weakness that hackers can use for their own protection. The aim of the article is to make readers familiar with the possible risks of hacker's attacks on the mobile phones and on possible attacks in the announced food of the internet of things (next IoT) devices
Exploring the Social Engineering Toolkit (Set) Using Backtrack 5R3IJERA Editor
Linux Operating System is being reverenced by many professionals because of its versatile nature. As many network security professionals ,particularly those of ethical hackers use linux in an extensive way, did we ever observe how and why the number of hackers were enhancing day to day. Not only professionals ,every one are unleashing their hacking potentials with the help of Backtrack5R3 operating system which is a comprehensive tool kit for security auditing. This paper emphasizes on the so called SET (Social Engineering Toolkit).In a pen-testing scenario, alongside uncovering vulnerabilities in the hardware and software systems and exploiting them ,the most effective of all is penetrating the human mind to extract the desire information. Such devious technics are known as social engineering ,and computer based software tools to facilitate this form the basis of Social Engineering Toolkit
Cyber Incident Response Proposed StrategiesDam Frank
Kemar Williams presented cyber incident response strategies including preparation, detection, analysis, and prevention of ransomware attacks. The presentation outlined organizing an incident response team and equipping them. It discussed monitoring for increased file renaming to detect attacks and using sacrificial network shares. Analysis involves determining the ransomware strain and scope of infection. Prevention strategies included email scanning, network segmentation, patching, and user training. Recovery involves restoring from backups and additional training.
Stopping threats with Votiro's Advanced Content Disarm and Reconstruction tec...Jasmin Hami
Votiro's advanced content disarm and reconstruction technology provides a proactive, signature-less method to stop undisclosed and zero-day threats. It inspects common file formats like documents, images, and archives to identify and remove malicious content while reconstructing the file to retain its functionality. The three-phase process fingerprints the file, disarms any threats, and rebuilds a safe version to neutralize exploits without detection or impact to users. This protects organizations from cyber attacks targeting known and unknown vulnerabilities.
End users face common cybersecurity threats such as phishing attacks, ransomware, password reuse, using unpatched devices, lack of remote security, data leakage via social media, and disabling security controls. Key security measures for end users include setting administrator privileges, downloading and installing security updates, installing antivirus software, activating firewalls, using multi-factor authentication, and creating regular backups. Security awareness is important for end users to avoid risks to company assets from security lapses.
The project entitled with “Network Security System” is related to hacking attacks in computer systems over internet. In today’s world many of the computer systems and servers are not secure because of increasing the hacking attacks or hackers with growing information, so information security specialist’s requirement has gone high.
This document provides information about computer hacking tools and skills. It discusses hacking tools like SQLI Helper, Dark Port Scanner, Sonic Bat virus creator, Brutus password cracker, and IP Tools. It also mentions Cain and Abel password recovery tool. The document outlines essential hacking skills like network packet sniffing, password hash cracking, rainbow tables, and cryptanalysis attacks. It emphasizes the wide IT knowledge required to become a skilled hacker, including fundamentals like networking, operating systems, and programming.
Tutorial 09 - Security on the Internet and the Webdpd
The document discusses various security threats on the internet and countermeasures to protect against them. It covers topics like secrecy, integrity, necessity, hackers/crackers, denial of service attacks, viruses/trojans, and identity theft. The key aspects of security are preventing unauthorized access, use, alteration or destruction of digital assets. Common threats include hacking, malware, and theft of personal information stored online.
This internship report summarizes the internship activities of Đỗ Liên Hán at Athena Center from July 16th to August 16th, 2014. During the 8-week internship, Đỗ Liên Hán learned about network security and used the tool Backtrack to exploit vulnerabilities. Specifically, Đỗ Liên Hán installed Backtrack in a virtual machine, used it to attack vulnerabilities in Windows XP and Windows 7 like MS08-067 and MS11-003, and tested attacks from a virtual private server to a local machine. The internship provided valuable hands-on experience that will help Đỗ Liên Hán in future work.
Aluria offers two anti-spyware SDKs that provide comprehensive multi-layered protection against spyware threats. The Aluria Gateway Protection SDK stops spyware before it enters networks, while the Aluria Desktop/Server Protection SDK scans and removes existing spyware on devices and includes preventative blocking to stop new spyware installations. Together these SDKs can be deployed separately or combined to protect all entry points against increasingly sophisticated spyware that aims to steal sensitive data and harm systems performance. Failing to effectively safeguard against spyware risks compromised security, data loss, reduced productivity and increased support costs.
System and Enterprise Security Project - Penetration TestingBiagio Botticelli
The document discusses penetration testing and summarizes its key steps: information gathering, threat modeling, vulnerability analysis, exploitation, post-exploitation, and reporting. It outlines three types of penetration testing: black box with no system knowledge; grey box with some limited internal details; and white box with full access to source codes and network information, simulating an internal attack. The goal of penetration testing is to identify security vulnerabilities by simulating real attacks before malicious actors do.
Malware is malicious software that can steal user data and slow down systems. It enters systems through downloads, links, emails and websites. Common types are viruses, worms, Trojans, and spyware. A computer virus self-replicates and spreads to other files, potentially damaging systems. Intrusion detection/prevention systems monitor network traffic to detect anomalies and security threats beyond what firewalls can block. Firewalls provide security between internal and external networks, and deploying them with a demilitarized zone (DMZ) allows external access to public servers while protecting internal systems.
Describe briefly the OSI Reference model and its relevance to computer security. [4 Marks]
• Ans 1: The Open System Interconnection Model (OSI) is a standardized framework for describing how computers communicate with each other over a network system. The OSI model also conceptualizes how data flows through a stack of seven layers, beginning with the physical layer and continuing through the datalink, network, transport, session, presentation, and finally the application layer (Simoneau, 2006)
The document is a whitepaper that provides an overview of DeepGuard, a Host-based Intrusion Prevention System (HIPS) from WithSecure. It discusses security challenges in today's digital world like high volumes of malware and exploits. It then describes DeepGuard's multi-layered approach using file reputation analysis, behavioral analysis, and communication with a Security Cloud. DeepGuard performs checks when programs launch and while they run to identify and block potentially harmful behaviors.
IRJET- Security from Threats of Computer SystemIRJET Journal
Governments are finding cyber security to be a major challenge as they store far more data than the private sector, often in older and more vulnerable systems, and are regularly targeted by hackers and sophisticated malware. The document discusses various threats to computer systems like malware, viruses, phishing, and zero-day attacks. It proposes solutions like usernames and passwords, firewalls, email encryption, updated anti-virus software, and regular backups to provide security from these threats. Analysis of existing security solutions can help determine weaknesses in data security.
Investigation of CryptoLocker Ransomware Trojans - Microsoft Windows
1. Investigation of CryptoLocker Ransomware Trojans - Microsoft Windows
Author: Aaron ND Sawmadal, MSc. Digital Forensics
Investigation of CryptoLocker Ransomware Trojans -
Microsoft Windows
Author: Aaron ND Sawmadal, MSc. Digital Forensics
2. Contents
Introduction ............................................................................................................................................3
How Does CryptoLocker Infect a Machine on a Network ......................................................................3
The Best Approach in Defending Against Cryptolocker in Corporate Network Resources ....................4
Machines and/or Software Resources that can Help Defend the Network ...........................................4
How to Eliminate CryptoLocker and the Strategy of Mitigation in a Post Incident Review ...................5
Conclusion...............................................................................................................................................5
References ..............................................................................................................................................6
3. Investigation of CryptoLocker Ransomware Trojans - Microsoft Windows
Author name: Aaron ND Sawmadal – MSc. Digital Forensics
Introduction
The threats of CryptoLocker (ransomware) is real and this malware is frequently been used by
malicious individuals to extort money from users both private and government agencies. If the
user’s system is infected and the user refuses to pay the ransom they will lose their files on the
affected systems and other subsequent devices connected to the same network. Unfortunately, the
threat is increasing exponentially, ‘1 in 30 have been hit by CryptoLocker and 40% pay the ransom’;
with 2014 been recorded the worst year for CryptoLocker attacks from
https://nakedsecurity.sophos.com/2014/03/07/1-in-30-have-been-hit-by-cryptolocker-and-40-
pay-the-ransom-says-study/
How Does CryptoLocker Infect a Machine on a Network
CryptoLocker is a malicious encryption software which uses Trojan scramble to encrypt all files
and folders on a computer network. The Trojan gets hold of the file systems on the network
resources and redirects the victim to a payment system. This malicious method is referred to as
ransomware. The victim’s network resources or devices will be under the control of the malicious
codes.
The CryptoLocker installs itself either by the faking the end user to install or execute codes. Once
the codes have been executed on the user’s system (my documents, desktop, download folder,
etc.); by using randomly generated names, it adds the names into the windows registry by random-
looking server .biz, .co.uk, .com, .info, .net, .org.au, .ru (Destructive malware “CryptoLocker” on the
loose – here’s what to do) from https://nakedsecurity.sophos.com/2013/10/12/destructive-
malware-cryptolocker-on-the-loose/.
The CryptoLocker uses the random-generated web server extensions installed on the user’s device
to make connections to the intruder’s server(s) with the extensions that have been installed on the
victim’s device; and once a successful respond is found, it uploads a small file called the
“CryptoLocker ID”. Upon the successful upload of the ID the server generates public-private key
unique to the user’s CryptoLocker ID and then send the “public key part” back to user’s device.
At a successful reception of this public-private key back to the user’s device; the Trojan malware
uses the public key to encrypt all the files it finds that matches the list of extensions on the victim’s
device. Below are extensions with files that can be exploited on the victim’s device.
From https://nakedsecurity.sophos.com/2013/10/12/destructive-malware-cryptolocker-on-the-loose/
Additionally, the malware searches and encrypt all files and all folders it can access on the victim’s
device or network. Unfortunately, if the victim’s device is on a workgroup or domain environment,
the malware will also encrypt all network resources with same extension as the victim’s.
In most instances the malware will redirect the victim to a payment option, giving the victim a
timeframe to pay the ransom, else lose all the data on the device.
4. The Best Approach in Defending Against Cryptolocker in Corporate Network Resources
The first and foremost strategy to defend any network has been clearly stipulated by the Australian
Signals Directorate from www.asd.gov.au.
i. The first principle states do not allow end users to execute codes. This can be
implemented by applications whitelisting. This prevent end users from installing any
applications with extensions .dll, .exe, .msi, etc.
ii. User or administrator whitelisting – Specify administrator users by level of privileges;
not all administrators should have rights to install programs on all workstations and
servers.
iii. Implementation of AppLocker policy – this is a default setting called Application
Identity which was first introduced in windows server 2008. This policy can be
deployed to all Windows 7/8/10 workstations. Within the AppLocker policy all the
extensions end users should not installed must be explicitly denied and also implement
deny policy of any unknown extensions and configure the policy to send alert emails
to the administrator of any unknown applications or extensions; with the details of the
host – includes the hostname, IP address, user login to the host, date and time the
unknown application was detected.
iv. Devices running Windows XP and Vista implement group policy to block executable
and payload packages. Apply the policy by: %appdata%*.exe;
%appdata%**.exe; %localappdata%*.exe; %localappdata%**.exe.
Implement via Group policy within a domain environment or add the policy to the
standard operating environment (SOE) image for all devices.
v. Install software by versioning and review board. Any new software to be introduced
within the network must go through review and approval process.
vi. Remove domain users from administrator user groups in computer management >>
groups>> administrator settings.
vii. Ensure all default administrator and guest accounts are disabled in workgroup or
domain environment.
Machines and/or Software Resources that can Help Defend the Network
i. In a windows environment install Enhanced Mitigation Experience Toolkit (EMET). This
utility helps prevent vulnerabilities in software from https://support.microsoft.com/en-
au/kb/2458544 . EMET supports windows Vista service pack 1 and service pack 2, up to
Windows 10.
ii. Installed intrusion detection and prevention software like Sophos, Microsoft EndPoint
Protections among other software.
iii. Firewall (Intrusion detection System/Intrusion Prevention System); this will detect stateful
connections of all applications and users on the network; checks against known databases
to determine if the applications is free of malicious codes. The firewall will mitigate
transmission of the malicious into the network.
5. Investigation of CryptoLocker Ransomware Trojans - Microsoft Windows
Author name: Aaron ND Sawmadal – MSc. Digital Forensics
How to Eliminate CryptoLocker and the Strategy of Mitigation in a Post Incident Review
The threat to network resources are real and should never be under-estimated. There is no such
thing as a small threat. Every threat can have significant impact if no adequate actions are taken.
For this reason the Australian Information Security Advice Cyber Security Operation Centre highly
recommends; ‘application whitelisting, patching of applications and operating systems, updated
versions of the software in deployment, and minimising administrative privileges’; from
http://asd.gov.au/publications/protect/top_4_mitigations.htm.
Other technical mitigation strategies includes but not limited to Loggings, File tracing and
auditing and or backups/restore server.
In the event whereby the worst case of CryptoLocker has been observed; the host that is
responsible for spreading vulnerability should be physically isolated from the network and ensure
to restore from backup is available. However, it is important to know if there’s no backups do not
to delay to respond to the intruder request.
Another non-technical strategy is to create an effective user awareness training and security policy.
From security perspective it is important to articulate in a document to indicate if there’s a
CryptoLocker breach should there be ransom pay or not? Security lead must get approval of the
executive managers and every incident must be dealt on a case by case basis.
Conclusion
In this day and age the best protection any security expert should adopt is an in-depth security
policy which encompasses all the security protection and mitigation strategies. This should be
adopted at all levels because legacy (antivirus and spyware) mitigation strategies cannot stop the
current threat of CryptoLocker. Ransomware will continue to grow because this is a lucrative
market. The bad guys always require users to execute their codes. With effective security strategies
one can detect the bad guys beforehand.
Security experts should implement logging, file tracing, auditing, patching rule and backup/restore
server. With these in mind, do not give loopholes to the bad guys to infiltrate the network.
Restriction of user privileges and the implementation of AppLocker policies will help to mitigate
many of the CryptoLocker emerging.
6. References
How CryptoLocker works and how it can be mitigated;
https://nakedsecurity.sophos.com/2013/10/18/cryptolocker-ransomware-see-how-it-works-
learn-about-prevention-cleanup-and-recovery/
Destructive malware “CryptoLocker” on the loose – here’s what to do;
https://nakedsecurity.sophos.com/2013/10/12/destructive-malware-cryptolocker-on-the-
loose/
Cryptolocker Mitigation Strategies Explained; http://www.windowsecurity.com/articles-
tutorials/misc_network_security/cryptolocker-mitigation-strategies-explained.html
Enhanced Mitigation Experience Toolkit (EMET); https://support.microsoft.com/en-
au/kb/2458544
How to prevent user to install software on windows 10;
https://www.youtube.com/watch?v=N5GoNzgkm14m
Top 4 Mitigation Strategies to Protect Your ICT System;
http://asd.gov.au/publications/protect/top_4_mitigations.htm
Cryptolocker virus: Australians forced to pay as latest encryption virus is 'unbreakable', security
expert says; http://www.abc.net.au/news/2015-08-09/australians-paying-thousands-after-
ransomware-virus-infection/6683618