ELFant in the Room – capa v3

Since our initial public release of capa, incident responders and reverse engineers have used the tool to automatically identify capabilities in Windows executables. With our newest code and ruleset updates, capa v3 also identifies capabilities in Executable and Linkable Format ELF files, such as...

Operation ‘Harvest’: A Deep Dive into a Long-term Campaign

ARCHIVED STORY Operation ‘Harvest’: A Deep Dive into a Long-term Campaign By Christiaan Beek · September 14, 2021 A special thanks to our Professional Services’ IR team, ShadowServer, for historical context on C2 domains, and Thomas Roccia/Leandro Velasco for malware analysis support. Executive...

Operation ‘Harvest’: A Deep Dive into a Long-term Campaign

ARCHIVED STORY Operation ‘Harvest’: A Deep Dive into a Long-term Campaign By Christiaan Beek · September 14, 2021 A special thanks to our Professional Services’ IR team,ShadowServer, for historical context on C2 domains, and Thomas Roccia/Leandro Velasco for malware analysis support. Executive...

Linux Implementation of Cobalt Strike Beacon Targeting Organizations Worldwide

Researchers on Monday took the wraps off a newly discovered Linux and Windows re-implementation of Cobalt Strike Beacon that's actively set its sights on government, telecommunications, information technology, and financial institutions in the wild. The as-yet undetected version of the penetratio...

Exploitation of Pulse Connect Secure Vulnerabilities

Summary The Cybersecurity and Infrastructure Security Agency CISA is aware of compromises affecting a number of U.S. government agencies, critical infrastructure entities, and other private sector organizations by a cyber threat actor—or actors—beginning in June 2020 or earlier related to...

CISA Releases Five Pulse Secure-Related MARs

As part of CISA’s ongoing response to Pulse Secure compromises, CISA has analyzed five malware samples related to exploited Pulse Secure devices. CISA encourages users and administrators to review the following five malware analysis reports MARs for threat actor tactics, techniques, and procedure...

Karton - Distributed Malware Processing Framework Based On Python, Redis And MinIO

Distributed malware processing framework based on Python, Redis and MinIO. The idea Karton is a robust framework for creating flexible and lightweight malware analysis backends. It can be used to connect malware analysis systems into a robust pipeline with very little effort. We've been in the...

MISP Cross-Site Scripting Vulnerability (CNVD-2021-61084)

MISP is an open source software solution. The product is used to collect, store, distribute, and share network security metrics, and has features such as threat network security event analysis and malware analysis. a cross-site scripting vulnerability exists in MISP, which stems from...

DarkSide Ransomware: Best Practices for Preventing Business Disruption from Ransomware Attacks

Summary This Advisory uses the MITRE Adversarial Tactics, Techniques, and Common Knowledge ATT &CK® framework, Version 9. See the ATT&CK for Enterprise for all referenced threat actor tactics and techniques. The Cybersecurity and Infrastructure Security Agency CISA and the Federal Bureau of...

CISA Publishes Malware Analysis Report and Updates Alert on DarkSide Ransomware

CISA has published a new Malware Analysis Report MAR on DarkSide Ransomware and updated Alert AA21-131A: DarkSide Ransomware: Best Practices for Preventing Business Disruption from Ransomware Attacks, originally released May 11, 2021. This update adds indicators of compromise associated with a...

REvil Ransomware Code Ripped Off by Rivals

They say imitation is the sincerest form of flattery: The LV ransomware, a strain that cropped up just this spring, turns out to be based on what is most likely pirated REvil ransomware code, according to researchers. A malware analysis of LV from Secureworks Counter Threat Unit CTU found that it...

Kaiju - A Binary Analysis Framework Extension For The Ghidra Software Reverse Engineering Suite

CERT Kaiju is a collection of binary analysis tools for Ghidra. This is a Ghidra/Java implementation of some features of the CERT Pharos Binary Analysis Framework, particularly the function hashing and malware analysis tools, but is expected to grow new tools and capabilities over time. As this i...

4 things you should know about testing AV software with VirusTotal’s free online multiscanner

As COVID-19 soldiers on, small and medium-size businesses now feel as ripe for malware attacks as deep-pocketed multinationals. SMBs see that, along with remote work, our pandemic has also brought troubling new holes to their security. This means cybercriminals—equal opportunity charlatans that...

MISP 安全漏洞

MISP is an open source software solution for collecting, storing, distributing and sharing cybersecurity metrics and threats related to cybersecurity event analysis and malware analysis. An information disclosure vulnerability exists in app/Model/MispObject.php in MISP version 2.4.141. The...

Targeted Malware Reverse Engineering Workshop follow-up. Part 2

If you have read our previous blogpost "Targeted Malware Reverse Engineering Workshop follow-up. Part 1", you probably know about the webinar we conducted on April 8, 2021, with Kaspersky GReATs Ivan Kwiatkowski and Denis Legezo, to share best practices in reverse engineering and demonstrate...

AppleJeus: Analysis of North Korea’s Cryptocurrency Malware

Summary This Advisory uses the MITRE Adversarial Tactics, Techniques, and Common Knowledge ATT &CK® framework. See the ATT&CK for Enterprise for all referenced threat actor tactics and techniques. This joint advisory is the result of analytic efforts among the Federal Bureau of Investigation FBI,...

Updates on Microsoft Exchange Server Vulnerabilities

CISA has added two new Malware Analysis Reports MARs to Alert AA21-062A: Mitigate Microsoft Exchange Server Vulnerabilities. MAR-10331466-1.v1: China Chopper Webshell identifies a China Chopper webshell observed in post-compromised Microsoft Exchange Servers. After successfully exploiting a...

Retoolkit - Reverse Engineer's Toolkit

This is a collection of tools you may like if you are interested on reverse engineering and/or malware analysis on x86 and x64 Windows systems. After installing this toolkit you'll have a folder in your desktop with shortcuts to RE tools like these: Why do I need it? You don't. Obviously, you can...

Webshells Observed in Post-Compromised Exchange Servers  

CISA has added two new Malware Analysis Reports MARs to Alert AA21-062A: Mitigate Microsoft Exchange Server Vulnerabilities. Each new MAR AR21-084A and AR21-084B identifies a webshell observed in post-compromised Microsoft Exchange Servers. After successful exploiting a Microsoft Exchange Server...

Trojan-Dropper.Win32.Dycler.yhb Insecure Permissions

Discovery / credits: Malvuln - malvuln.com c 2021 Original source: https://malvuln.com/advisory/04a5a52f12d2a130bb88f98c3bc14aa8.txt Contact: [email protected] Media: twitter.com/malvuln Threat: Trojan-Dropper.Win32.Dycler.yhb Vulnerability: Insecure Permissions Description: Dycler.yhb creates ...