Since 2023, Microsoft’s Digital Crimes Unit (DCU), Fortra, and the Health Information Sharing and Analysis Center (Health-ISAC) have been working together to combat the use of unauthorized, legacy copies of Cobalt Strike and compromised Microsoft software, which have been weaponized by cybercriminals to deploy ransomware and other malware, causing significant harm to critical sectors like […]
Read More… from Update: Stopping Cybercriminals from Abusing Cobalt Strike
This short video provides a high level overview on how to install and use the Cobalt Strike Mutator Kit, which uses an LLVM obfuscator to break in-memory YARA scanning of the sleep mask. Are you ready to take the next step? […]
Cobalt Strike 4.10.1 is now available. This is an out of band update to fix issues that were discovered in Cobalt Strike 4.10 that we felt should be fixed before the next release. This update does not affect the 4.11 release which is well underway and due to ship in early 2025. Mutiple Team Server […]
Cobalt strike is a powerful red team tool that is used by pen testers and red teamers to replicate the tactics and techniques of long-term embedded attackers. This 5-minute video will give you a high-level overview of Cobalt Strike’s functionality, including its signature payload, Beacon, and its flexible C2 framework. Are you ready to take the next step? […]
TLDR: Cobalt Strike Staffing Changes Recently there have been some internal changes within the Cobalt Strike team. Greg Darwin has switched to a new position within Fortra. Greg has been the face of Cobalt Strike within the community for a number of years and we thank Greg for all his work and effort he put […]
Read More… from Cobalt Strike Staffing Changes and the Road Ahead
As threat actors innovate their tactics, security teams need to match them step for step. We can’t fight new and complex threats with old and predictable techniques. It’s time that the gloves come off and that organizations subject their networks, cloud resources, and internal assets to not only real-world threats, but real-world attacks – and […]
The UDRL and the Sleepmask are key components of Cobalt Strike’s evasion strategy, yet historically they have not worked well together. For example, prior to CS 4.10, Beacon statically calculated its location in memory using a combination of its base address and its section table. This calculation was then modified depending on the contents of […]
Read More… from Revisiting the UDRL Part 3: Beacon User Data
Cobalt Strike 4.10 is now available. This release introduces BeaconGate, the Postex Kit, and Sleepmask-VS. In addition, we have overhauled the Sleepmask API, refreshed the Jobs UI, added new BOF APIs, added support for hot swapping C2 hosts, and more. This has been a longer release cycle than in previous releases to allow us to […]
Press Release: View Original Europol Announcement 03 Jul 2024 – Law enforcement has teamed up with the private sector to fight against the abuse of a legitimate security tool by criminals who were using it to infiltrate victims’ IT systems. Older, unlicensed versions of the Cobalt Strike red teaming tool were targeted during a week […]
Read More… from Europol Coordinates Global Action Against Criminal Abuse of Cobalt Strike
The Cobalt Strike download infrastructure will be down for a short while on Wednesday 13th March for routine maintenance. Work will begin around 15:00 GMT (10:00 EST). We expect the maintenance to be completed in under 30 minutes. Downloads and updates will be unavailable while this work is carried out. Apologies for any inconvenience that […]
Read More… from Cobalt Strike Infrastructure Downtime – March 2024