CVE-2021-36798

CVE-2021-36798 affects HelpSystems Cobalt Strike Team Server (versions 4.2 and 4.3). The DoS arises when a beacon registers with the C2/Team Server, enabling a remote attacker to crash the C2 server thread and disrupt beacon communications. Publicly available exploit/ PoC details exist (e.g., a G...

CVE-2021-36798

A Denial-of-Service DoS vulnerability was discovered in Team Server in HelpSystems Cobalt Strike 4.2 and 4.3. It allows remote attackers to crash the C2 server thread and block beacons' communication with it...

Helpsystems HelpSystems Cobalt Strike 安全漏洞

HelpSystems HelpSystems Cobalt Strike is a penetration testing software from HelpSystems USA. A security vulnerability in Team Server for HelpSystems Cobalt Strike 4.2 and 4.3 allows remote attackers to crash a C2 server thread and prevent beacons from communicating with it...

cThreadHijack - Beacon Object File (BOF) For Remote Process Injection Via Thread Hijacking

. . . \ /| | | / | || || | | / | | | | \ / \ \ / / \ | | \ \ / | |/ / \ | | | Y \ | /\ / / / // \ Y / | | |/ \ | | || /| \ /\ || /|/| /\ | \ / / / / / / | / / / Beacon Object File BOF for remote process injection, via thread hijacking, without spawning a remote thread...

Angry Affiliate Leaks Conti Ransomware Gang Playbook

An apparently vengeful affiliate of the Conti Gang has leaked the playbook of the ransomware group after alleging that the notorious cybercriminal organization underpaid him for doing its dirty work. A security researcher shared a comment from an online forum allegedly posted by someone who did...

SharpLAPS - Retrieve LAPS Password From LDAP

The attribute ms-mcs-AdmPwd stores the clear-text LAPS password. This executable is made to be executed within Cobalt Strike session using execute-assembly. It will retrieve the LAPS password from the Active Directory. Require either: Account with ExtendedRight or Generic All Rights Domain Admin...

Malware Makers Using ‘Exotic’ Programming Languages

Malware authors are increasingly using rarely spotted programming languages such as Go, Rust, Nim and DLang in order to create new tools and to hinder analysis, researchers have found. Use of those four languages is escalating in the number of malware families being identified, according to a...

Fake Zoom App Dropped by New APT ‘Luminous Moth’

Researchers have spotted a weird one: A newly identified threat actor linked to China that’s first mass-attacking, but then cherry-picking, just a few targets to hit with malware and data exfiltration. Kaspersky researchers said in a Wednesday writeup that they’ve named the advanced threat actor...

China's Cyberspies Targeting Southeast Asian Government Entities

A sweeping and "highly active campaign" that originally set its sights on Myanmar has broadened its focus to strike a number of targets located in the Philippines, according to new research. Russian cybersecurity firm Kaspersky, which first spotted the infections in October 2020, attributed them ...

LuminousMoth APT: Sweeping attacks for the chosen few

APT actors are known for the frequently targeted nature of their attacks. Typically, they will handpick a set of targets that in turn are handled with almost surgical precision, with infection vectors, malicious implants and payloads being tailored to the victims identities or environment. Its no...

Managed Service Providers Used in Coordinated, Mass Ransomware Attack Impacting Hundreds of Companies

Rapid7 is aware of and tracking all information surrounding a coordinated, mass ransomware attack reported to be affecting hundreds of organizations. Huntress Labs is maintaining a public Reddit thread documenting the scope and triage of an event that has, as of the original post date see updates...

Kaseya Patches Zero-Days Used in REvil Attacks

Kaseya made good on its promise to issue patches by July 11. On Saturday, the company behind the Virtual System/Server Administrator VSA platform that got walloped by the REvil ransomware-as-a-service RaaS gang in a massive supply-chain attack released urgent updates to address critical zero-day...

Email claiming Kaseya patch drops Cobalt Strike malware

By Sudais Asif The malicious email campaign is claiming to contain a patch for the Kaseya vulnerability but in fact, it is the infamous Cobalt Strike malware. This is a post from HackRead.com Read the original post: Email claiming Kaseya patch drops Cobalt Strike malware...

Malspam banks on Kaseya ransomware attack

The Malwarebytes Threat Intelligence Team recently found a malicious spam campaign making the rounds and banking on the ransomware attack that forced Kaseya to shut down its VSA service. This is a classic example of an opportunistic attack conducted by potentially another threat actor/group off t...

FindObjects-BOF - A Cobalt Strike Beacon Object File (BOF) Project Which Uses Direct System Calls To Enumerate Processes For Specific Loaded Modules Or Process Handles

A Cobalt Strike Beacon Object File BOF project which uses direct system calls to enumerate processes for specific modules or process handles. What is this repository for? Use direct systems calls within Beacon Object files to enumerate processes for specific loaded modules e.g. winhttp.dll,...

Tracking Cobalt Strike: A Trend Micro Vision One Investigation

Cobalt Strike is a well-known beacon or post-exploitation tool that has been linked to several ransomware campaigns. This report focuses on the process of uncovering its tracks in order to fully contain and remove a malware infection...

Mongolian Certificate Authority Hacked to Distribute Backdoored CA Software

In yet another instance of software supply chain attack, unidentified hackers breached the website of MonPass, one of Mongolia's major certificate authorities, to backdoor its installer software with Cobalt Strike binaries. The trojanized client was available for download between February 8, 2021...

Exploit for CVE-2021-1675

Local Privilege Escalation Edition of CVE-2021-1675/CVE-2021-3...

Cobalt Strike Usage Explodes Among Cybercrooks

The use of Cobalt Strike – the legitimate, commercially available tool used by network penetration testers – by cybercrooks has shot through the roof, according to Proofpoint researchers, who say that the tool has now “gone fully mainstream in the crimeware world.” The researchers have tracked a...

Aggrokatz - An Aggressor Plugin Extension For Cobalt Strike Which Enables Pypykatz To Interface With The Beacons Remotely

aggrokatz is an Aggressor plugin extension for CobaltStrike which enables pypykatz to interface with the beacons remotely. The current version of aggrokatz allows pypykatz to parse LSASS dump files and Registry hive files to extract credentials and other secrets stored without downloading the fil...