Fileless Malware [Cyber Security]
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Fileless malware is a type of malicious software that uses legitimate programs to infect a computer. It does not rely on files and leaves no footprint, ...
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By: Sumit Saurav [Dev Sanskriti University]](https://image.slidesharecdn.com/fileless-210821094138/85/Fileless-Malware-Cyber-Security-1-320.jpg)
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Fileless malware infections are possible without dropping files by storing malicious code in non-file locations or executing it remotely from memory. A fileless pentest operation should aim to infect systems without files, install fileless backdoors, and achieve fileless persistence using small artifacts hidden in the registry, alternate data streams, environment variables or other unconventional locations. Real world examples of fileless malware include worms that spread entirely in memory as well as advanced persistent threats that used techniques like Windows Management Instrumentation events and process hollowing to avoid writing to disk.
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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.
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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).
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http://samsclass.info/120/120_S09.shtml#lecture
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Many thanks to Sam Bowne for allowing to publish these presentations.
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Standard security solutions have continued to improve in their ability to detect and block malware and cyberattacks. This has forced cybercriminals to employ stealthier methods of evading legacy security to achieve success, including launching fileless attacks, where no executable file is written to disk. Download this presentation provided by CrowdStrike security experts to learn why so many of today’s adversaries are abandoning yesterday’s malware and relying on an evolving array of fileless exploits.
You’ll learn how fileless attacks are conceived and executed and why they are successfully evading the standard security measures employed by most organizations. You’ll also receive guidance on the best practices for defending your organization against these stealthy, damaging attacks.
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--Why fileless attacks are having so much success evading legacy security solutions
--How you can protect your organization from being victimized by a fileless attack, including the security technologies and policies that are most effective
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This document discusses various types of malicious software including viruses, worms, and malware. It provides definitions and examples of different viruses and worms, how they spread and replicate on systems. It also summarizes approaches for detecting, identifying and removing viruses and worms, as well as proactive containment strategies for worms.
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Slide berikut merupakan slide yang berisikan dasar-dasar bagi kita dalam memahami konsep keamanan jaringan komputer, baik dari sisi inftrastruktur, teknologi dan paradigma bagi pengguna.
Materi yang diberikan sudah disusun oleh Pakar yang merupakan Trainer CEH dan memang berkompeten dibidang keamanan jaringan.
Slide ini saya dapatkan dari beliau saat mengikut training Certified Computer Security Officer (CCSO) dan Certified Computer Security Analyst (CCSA) dari beliau.
Semoga bermanfaat sebagai acuan bagi kita untuk belajar tentang keamanan jaringan komputer.
Terimakasih
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- Tools for static analysis include file hashing, string extraction, and PE header examination. Dynamic analysis tools monitor the registry, file system, processes, and network traffic created by malware runtime behavior. These include Process Monitor, Wireshark, Process Explorer, and network sniffers.
- To safely conduct malware analysis, one should create an isolated virtual lab separated from production networks, and install behavioral monitoring and code analysis tools like OllyDbg, Process Monitor, and Wiresh
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The document discusses vulnerability scanning and OpenVAS. Vulnerability scanning involves using a scanner to identify security weaknesses. OpenVAS is an open source vulnerability scanning framework that consists of several services and tools for vulnerability scanning and management. At the center is the OpenVAS scanner which executes Network Vulnerability Tests (NVTs) from an NVT database that is regularly updated. The OpenVAS Manager receives tasks from the administrator and keeps a history of past scans.
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The document discusses various types of malware attacks including DDoS attacks, botnets, and mitigations. It provides definitions and examples of different malware types such as viruses, worms, Trojan horses, rootkits, logic bombs, and ransomware. It also discusses how botnets are used to launch DDoS attacks and describes common DDoS attack countermeasures such as preventing initial hacks, using firewalls, and changing targeted IP addresses.
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This document provides an overview of viruses and worms, including how they work and different types. It begins by defining viruses as programs that can copy themselves without permission to infect computers, while worms are self-replicating programs that spread through a network. The document then covers the basic structure and components of viruses, differences between viruses and worms, and types of viruses such as boot sector, file, macro, and multipartite viruses. It also discusses worms like the Morris Worm and how they differ from viruses in spreading through a network rather than specific files or programs.
Project Malware AnalysisCS 6262 Project 3Agenda.docx
Project: Malware Analysis
CS 6262 Project 3
Agenda
• Part 1: Analyzing Windows Malware
• Part 2: Analyzing Android Malware
Scenario
• Analyzing Windows Malware
• You got a malware sample from the wild. Your task is to discover what
malware does by analyzing it
• How do you discover the malware’s behaviors?
• Static Analysis
• Manual Reverse Engineering
• Programming binary analysis
• Dynamic Analysis
• Network behavioral tracing
• Run-time system behavioral tracing(File/Process/Thread/Registry)
• Symbolic Execution
• Fuzzing
Scenario
• In our scenario, you are going to analyze the given malware with tools
that we provide.
• The tools help you to analyze the malware with static and dynamic
analysis.
• Objective
1. Find which server controls the malware (the command and control (C2)
server)
2. Discover how the malware communicates with the command and control
(C2) server
• URL and Payload
3. Discover what activities are done by the malware payload
• Attack Activities
Scenario
• Requirement
• Make sure that no malware traffic goes out from the virtual machine
• But, updating of malware (stage 2), and downloading payload (stage 3) are required to
be allowed (set as default option)
• The command and control server is dead. You need to reconstruct it
• Use tools to reconstruct the server, then reveal hidden behaviors of the malware
• Analyze network traffic on the host, and figure out the list of available
commands for the malware
• Analyze network traffic trace of the host, and figure out what malware does
• Write down your answer into assignment-questionnaire.txt
Project Structure
• A Virtual Machine for Malware analysis
• Please download and install the latest version or update your virtual box.
• https://www.virtualbox.org/wiki/Downloads
• Download the VM
• Download links
• http://ironhide.gtisc.gatech.edu/vm_2018.7z
• http://bombshell.gtisc.gatech.edu/vm_2018.7z
• Verify the md5 hash of the 7z file: 537e70c4cb4662d3e3b46af5d8223fd
• Please install 7zip or p7zip
• Windows, Linux and MacOs: http://www.7-zip.org/download.html
• Unarchive the 7z file
• Password: GTVM!
https://www.virtualbox.org/wiki/Downloads
http://ironhide.gtisc.gatech.edu/vm_2018.7z
http://bombshell.gtisc.gatech.edu/vm_2018.7z
http://www.7-zip.org/download.html
Project Structure
• Open VirtualBox
• Go to File->Import Appliance.
• Select the ova file and import it.
• For detailed information on how to import the VM, see:
• https://docs.oracle.com/cd/E26217_01/E26796/html/qs-import-vm.html
• VM user credentials
• Username: analysis
• Password: analysis
https://docs.oracle.com/cd/E26217_01/E26796/html/qs-import-vm.html
Project Structure
• In the Virtual Machine (VM)
• Files
• init.py
• This initializes the project environment
• Type your Georgia Tech username (same login name as Canvas) after running this
• update.sh
• This script updates the VM if any further update has been made by TA
• DO NOT execute the scri.
Dealing with legacy code
This document discusses various techniques for sandboxing untrusted code, including chroot jails, system call interposition, virtual machines, and software fault isolation. It notes that completely isolating applications is often inappropriate, as they need controlled ways to communicate. The key challenges are implementing reference monitors to enforce isolation policies and specifying the right policy for each application to define what behavior is allowed.
Kinds of Viruses
Viruses, worms, and Trojan horses are types of malicious software (malware) that can damage computers. Viruses spread by attaching to host programs and replicating, worms spread across networks without user action, and Trojans allow hackers remote access. Some examples provided include the CIH virus from 1998 that overwrites partition tables, the 2001 Code Red worm that allowed network hacking, and the 2012 Trojan.Flame malware that stole data. Basic safety tips to avoid malware include keeping systems updated, using antivirus software, avoiding unsafe files/links, and being wary of suspicious messages.
Isys20261 lecture 05
This document provides an overview of various types of host-based attacks, including backdoors, viruses, worms, trojans, rootkits, and spyware. It discusses the characteristics and infection methods of each type of malicious code or software. The document emphasizes that host-based attacks are becoming more sophisticated over time, leading to an arms race between attackers and security developers, with attackers usually staying one step ahead due to their professional training and links to organized crime.
CNIT 126 11. Malware Behavior
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This document defines and describes different types of malware including viruses, worms, Trojans, and backdoors. It explains that viruses spread by infecting other files and programs and replicating themselves, while worms propagate over networks by exploiting vulnerabilities. Trojans appear harmless but facilitate unauthorized access. The document provides examples of specific malware instances and outlines the phases viruses go through from dormant to triggering payload. It also defines key virus terminology like infection mechanisms and payloads.
Computer virus
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6unit1 virus and their types
1. A computer virus is a malicious program that attaches itself to other programs and replicates, potentially damaging infected programs or the system. Computer worms are similar but self-contained and spread via networks or email.
2. Viruses are classified by their method of infection such as boot sector, TSR, macro, or polymorphic viruses.
3. Viruses work by attaching to a host program, replicating themselves, and potentially damaging the system through deleting files, sending data, or using resources. They typically spread via removable media, downloads, email attachments, or unpatched software.
4. Basic computer security involves using
Creating Havoc using Human Interface Device
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Virus vs worms vs trojans
Viruses, worms, and Trojans are types of malware. Viruses propagate by inserting copies of themselves into other programs and spreading when those programs are run. Worms propagate across networks without needing user interaction by exploiting vulnerabilities to transfer themselves to other systems. Trojan horses appear to have legitimate functions but secretly perform malicious actions like unauthorized access. Defenses include antivirus software, firewalls, and patching systems.
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Monitoring and Managing Anomaly Detection on OpenShift
Overview
Dive into the world of anomaly detection on edge devices with our comprehensive hands-on tutorial. This SlideShare presentation will guide you through the entire process, from data collection and model training to edge deployment and real-time monitoring. Perfect for those looking to implement robust anomaly detection systems on resource-constrained IoT/edge devices.
Key Topics Covered
1. Introduction to Anomaly Detection
- Understand the fundamentals of anomaly detection and its importance in identifying unusual behavior or failures in systems.
2. Understanding Edge (IoT)
- Learn about edge computing and IoT, and how they enable real-time data processing and decision-making at the source.
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Power Grid Model
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Fileless Malware [Cyber Security]
- 1. Fileless Attacks By: Sumit Saurav [Dev Sanskriti University]
- 2. FILELESS ATTACKS • Malicious code that doesn't need to create or drop regular files on the system. • Move away from the traditional monolithic malware or pentesting framework. • For persistence we usually need to leave at least something on the system but we can hide it and make it very small.
- 3. • Worms (memory only): • Slammer. • Poweliks. • WMIGhost. • Empire. • Duqu 2.0 (Kaspersky). Real world examples
- 4. 4 • First stage: Minimal. Usually a small vbs or js (not directly PowerShell). • Second Stage: Main script based on PowerShell. More complex and powerful logic that injects a binary into another process. • Third stage: Binary. Usually a PE DLL payload. More similar to traditional malware, but never touches disk. COMMON FILELESS BEHAVIOR
- 5. • Infection without sending any files. • Not common. Even known FileLess APT operations use some kind of files in this stage. • Preferably, we need to deliver the exploit before the application layer. • Inside a stream. • At the lower network layers (e.g. SMB or SSL exploits). • Open network services (e.g. Eternalblue). 5 FileLess Infection
- 6. • Configuration only backdoors (no code). • Some popular: • Create user + Remote exec (Psexec/Sc, WMI, SchTasks, WinRM, PSRemoting). • Binary Image Hijack + Remote Desktop. • Silver/Golden tickets. • Proxy + Decrease security. FileLess Backdoors 6
- 7. 7 • A lot of ideas taken from: • Casey Smith: https://twitter.com/subtee • Didier Stevens: https://twitter.com/DidierStevens • Alex Abramov: https://twitter.com/codereversing • Rob Fuller: https://twitter.com/mubix • Cneelis: https://twitter.com/Cneelis • Matt Nelson: https://twitter.com/enigma0x3 • Matt Graeber: https://twitter.com/mattifestation • James Foreshaw - https://twitter.com/tiraniddo
- 8. THANK YOU
Editor's Notes
- Photo by Nicolas Picard on Unsplash