A BlackCat ransomware infection was found deploying a signed kernel driver to stay under the radar and avoid detection.
The driver ktgn.sys is dropped and installed by tjr.exe an executable protected via a virtual machine.
The malicious software contains multiple features including deleting and copying files killing processes and rebooting the system.
SkyWatchSM Alert Legend
Glesec Information Sharing Protocol
GLESEC CYBER SECURITY INCIDENT REPORTS are in compliance with the U.S. Department of Homeland Security (DHS) Traffic-Light Protocol (TLP).
Disclosure is Not Limited.
Limited Disclosure, Restricted Only to the Community.
Limited Disclosure, restricted to the Participant's Organization.
Not for Disclosure, Restricted/ Classified - Only Shared with US DHS.