windows verified high v1.0.0

NSecKrnl.sys

Driver used by ValleyRAT malware to terminate security processes via IOCTL 0x2248E0

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

Sandbox: execFile · Timeout: 30s

Capabilities

security.privilegeescalation.kernel-exploit

Detection

TypeRule / Indicator
yara https://github.com/magicsword-io/LOLDrivers/blob/main/detections/yara/yara-rules_vuln_drivers_strict.yar
sigma https://github.com/magicsword-io/LOLDrivers/blob/main/detections/sigma/driver_load_win_vuln_drivers_names.yml
sigma https://github.com/magicsword-io/LOLDrivers/blob/main/detections/sigma/driver_load_win_vuln_drivers.yml
sysmon https://github.com/magicsword-io/LOLDrivers/blob/main/detections/sysmon/sysmon_config_vulnerable_hashes_block.xml
sysmon https://github.com/magicsword-io/LOLDrivers/blob/main/detections/sysmon/sysmon_config_vulnerable_hashes.xml

Documentation

examples:

  • description: "Load the kernel driver" command: "sc.exe create NSecKrnl binPath=C:\\windows\\temp\\NSecKrnl.sys type=kernel && sc.exe start NSecKrnl"

NSecKrnl.sys

Driver used by ValleyRAT malware to terminate security processes via IOCTL 0x2248E0

Use Case: Terminate security processes

Required Privileges: kernel

MITRE ATT&CK: T1068

References