Sigma rule: HackTool - Sliver C2 Implant Activity Pattern

Rule

Title

HackTool - Sliver C2 Implant Activity Pattern

Status

test

Level

critical

Author

Nasreddine Bencherchali (Nextron Systems), Florian Roth (Nextron Systems)

Date

2022-08-25

Modified

2023-03-05

File

rules/windows/process_creation/proc_creation_win_hktl_sliver_c2_execution_pattern.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects process activity patterns as seen being used by Sliver C2 framework implants

Log source

product

windows

category

process_creation

Detection

selection:
    CommandLine|contains: '-NoExit -Command [Console]::OutputEncoding=[Text.UTF8Encoding]::UTF8'
condition: selection

False positives (as the rule lists them)

• Unlikely

Tags

• attack.execution
• attack.t1059

MITRE ATT&CK ids this rule names

• T1059

References

• https://github.com/BishopFox/sliver/blob/79f2d48fcdfc2bee4713b78d431ea4b27f733f30/implant/sliver/shell/shell_windows.go#L36
• https://www.microsoft.com/security/blog/2022/08/24/looking-for-the-sliver-lining-hunting-for-emerging-command-and-control-frameworks/

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_hktl_sliver_c2_execution_pattern.yml