Revisiting the UDRL Part 3: Beacon User Data
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
Cobalt Strike Infrastructure Downtime – March 2024
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
Cobalt Strike Infrastructure Maintenance – January 2024
We will be making a small change to the Cobalt Strike infrastructure next week. This will not result in any downtime but will affect updates
Revisiting the User-Defined Reflective Loader Part 2: Obfuscation and Masking
This is the second installment in a series revisiting the User-Defined Reflective Loader (UDRL). In part one, we aimed to simplify the development and debugging
Revisiting the User-Defined Reflective Loader Part 1: Simplifying Development
This blog post accompanies a new addition to the Arsenal Kit – The User-Defined Reflective Loader Visual Studio (UDRL-VS). Over the past few months, we
Arsenal Kit Update: Thread Stack Spoofing
As I mentioned in the recent Roadmap Update blog post, we are in the process of expanding the Cobalt Strike development team and ramping up
Cobalt Strike 4.5: Fork&Run – you’re “history”
Cobalt Strike 4.5 is now available. This release sees new options for process injection, updates to the sleep mask and UDRL kits, evasion improvements and
Cobalt Strike infrastructure changes
We will be making some changes to the Cobalt Strike infrastructure in late November/early December. We are not anticipating any downtime but we wanted to
Cobalt Strike 4.4: The One with the Reconnect Button
Cobalt Strike 4.4 is now available. This release puts more control into your hands, improves Cobalt Strike’s evasive qualities and addresses a number of smaller
Cobalt Strike 4.3 – Command and CONTROL
Cobalt Strike 4.3 is now available. The bulk of the release involves updates to DNS processing but there are some other, smaller changes in there