REvil Ransomware gang behind the Kaseya VSA Supply-Chain attack

THREAT LEVEL: Red. For a detailed advisory, download the pdf file here. The REvil ransomware group was successful in carrying out a supply chain attack by exploiting the zero-day vulnerability CVE-2021-30116 in the Kaseya VSA server and delivering a malicious script to all the computer devices...

Indexsinas SMB Worm Campaign Infests Whole Enterprises

The Indexsinas SMB worm is on the hunt for vulnerable environments to self-propagate into, researchers warned – with a particular focus on the healthcare, hospitality, education and telecommunications sectors. Its end goal is to drop cryptominers on compromised machines. Indexsinas, aka...

Bash Ransomware DarkRadiation Targets Red Hat- and Debian-based Linux Distributions

We investigate how certain hacking tools are used to move laterally on victims’ networks to deploy ransomware. These tools contain reconnaissance/spreader scripts, exploits for Red Hat and CentOS, binary injectors, and more. In this blog, we focus on analyzing the worm and ransomware script...

TChopper - Conduct Lateral Movement Attack By Leveraging Unfiltered Services Display Name To Smuggle Binaries As Chunks Into The Target Machine

New technique I have discovered recently and give it a nickname Chop chop to perform lateral movement using windows services display name and WMI by smuggling the malicious binary as base64 chunks and automate the process using the TChopper tool. How it works the tool will get the file you willin...

SharpWebServer - HTTP And WebDAV Server With Net-NTLM Hashes Capture Functionality

A Red Team oriented simple HTTP & WebDAV server written in C with functionality to capture Net-NTLM hashes. To be used for serving payloads on compromised machines for lateral movement purposes. Requires .NET Framework 4.5 and System.Net and System.Net.Sockets references. Usage :: SharpWebServer ...

Cobalt Strike, a penetration testing tool abused by criminals

If you were to compose a list of tools and software developed by security and privacy defenders that ended up being abused by the bad guys, then Cobalt Strike would unfortunately be near the top of the list. Maybe only Metasploit could give it a run for the first place ranking. Metasploit—probabl...

CheeseTools - Self-developed Tools For Lateral Movement/Code Execution

This repository has been made basing onto the already existing MiscTool, so big shout-out to rasta-mouse for releasing them and for giving me the right motivation to work on them. CheeseExec Command Exec / Lateral movement via PsExec-like functionality. Must be running in the context of a...

Microsoft Azure Virtual Machine信息泄露漏洞（CVE-2021-27075）

CVE-2021-27075: Microsoft Azure Vulnerability Allows Privilege Escalation and Leak of Private Data Written by Paul Litvak - 11 May 2021 In this post I will explain how the Microsoft Azure Virtual Machine VM extension works and how we found a fatal vulnerability in the extension mechanism affectin...

CyberBattleSim - An Experimentation And Research Platform To Investigate The Interaction Of Automated Agents In An Abstract Simulated Network Environments

CyberBattleSim is an experimentation research platform to investigate the interaction of automated agents operating in a simulated abstract enterprise network environment. The simulation provides a high-level abstraction of computer networks and cyber security concepts. Its Python-based Open AI G...

Raft of Exim Security Holes Allow Linux Mail Server Takeovers

A veritable cornucopia of security vulnerabilities in the Exim mail server have been uncovered, some of which could be chained together for unauthenticated remote code execution RCE, gaining root privileges and worm-style lateral movement, according to researchers. The Qualys Research Team has...

Hundreds of Millions of Dell Users at Risk from Kernel-Privilege Bugs

Five high-severity security flaws in Dell’s firmware update driver are impacting potentially hundreds of millions of Dell desktops, laptops, notebooks and tablets, researchers said. The bugs have gone undisclosed for 12 years, and could allow the ability to bypass security products, execute code...

Imperva to acquire CloudVector: Prioritizing API Protection for Modern Environments

I am excited to announce Imperva has entered into an agreement to acquire CloudVector to advance our mission to protect data and all paths to it. Together, we believe we can change what organizations expect from Web Application and API Protection solutions. There are multiple reasons APIs are at...

MoveKit - Cobalt Strike Kit For Lateral Movement

Movekit is an extension of built in Cobalt Strike lateral movement by leveraging the executeassembly function with the SharpMove and SharpRDP .NET assemblies. The aggressor script handles payload creation by reading the template files for a specific execution type. IMPORTANT: To use the script a...

PYSA Ransomware Pillages Education Sector, Feds Warn

The FBI has issued a warning about an uptick in cyberattacks on the education sector that are delivering the PYSA ransomware. In a “Flash” alert to the cybersecurity community issued on Tuesday, the Feds said that PYSA has been seen in attacks on schools in 12 U.S. states and in the United Kingdo...

FIN8 Resurfaces with Revamped Backdoor Malware

The FIN8 cyberattack group has resurfaced after a period of relative quiet, researchers have found. The gang is using new versions of the BadHatch backdoor to compromise companies in the chemical insurance, retail and technology industries. The attacks have been seen hitting organizations around...

Researchers Find 3 New Malware Strains Used by SolarWinds Hackers

FireEye and Microsoft on Thursday said they discovered three more malware strains in connection with the SolarWinds supply-chain attack, including a "sophisticated second-stage backdoor," as the investigation into the sprawling espionage campaign continues to yield fresh clues about the threat...

Microsoft open sources CodeQL queries used to hunt for Solorigate activity

A key aspect of the Solorigate attack is the supply chain compromise that allowed the attacker to modify binaries in SolarWinds’ Orion product. These modified binaries were distributed via previously legitimate update channels and allowed the attacker to remotely perform malicious activities, suc...

Microsoft open sources CodeQL queries used to hunt for Solorigate activity

A key aspect of the Solorigate attack is the supply chain compromise that allowed the attacker to modify binaries in SolarWinds’ Orion product. These modified binaries were distributed via previously legitimate update channels and allowed the attacker to remotely perform malicious activities, suc...

A playbook for modernizing security operations

The security community is continuously changing, growing, and learning from each other to better position the world against cyber threats. In the latest post from our new Voice of the Community blog series, Microsoft Product Marketing Manager Natalia Godyla talks with Dave Kennedy, Founder and...

ATTPwn - Tool Designed To Emulate Adversaries

ATTPwn is a computer security tool designed to emulate adversaries. The tool aims to bring emulation of a real threat into closer contact with implementations based on the techniques and tactics from the MITRE ATT&CK framework. The goal is to simulate how a threat works in an intrusion scenario,...