windows verified critical v1.0.0

changsha

Malicious rootkit masquerading as legitimate CrowdStrike Falcon Sensor driver (CSAgent.sys). Signed with stolen/expired Chinese certificate from 2015. Detected by 61.6% of AV engines as Rootkit.Win64.Agent and Trojan:Win64/AVTamper. Used to establish kernel-level persistence while evading detection by impersonating trusted security software.

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sc.exe create changsha binPath=C:\windows\temp\changsha.sys type=kernel && sc.exe start changsha
sc.exe create changsha binPath=C:\windows\temp\changsha.sys type=kernel && sc.exe start changsha

Sandbox: execFile · Timeout: 30s

Capabilities

security.privilegeescalation.kernel-exploit

Documentation

examples:

  • description: "Load the kernel driver" command: "sc.exe create changsha binPath=C:\\windows\\temp\\changsha.sys type=kernel && sc.exe start changsha"
  • description: "Exploit the driver for privilege escalation" command: "Exploit.exe --driver changsha"

changsha

Malicious rootkit masquerading as legitimate CrowdStrike Falcon Sensor driver (CSAgent.sys). Signed with stolen/expired Chinese certificate from 2015. Detected by 61.6% of AV engines as Rootkit.Win64.Agent and Trojan:Win64/AVTamper. Used to establish kernel-level persistence while evading detection by impersonating trusted security software.

Use Case: Elevate privileges

Required Privileges: kernel

MITRE ATT&CK: T1068

References