Detection rules › Sigma

HackTool - Sliver C2 Implant Activity Pattern

Severity
critical
Author
Nasreddine Bencherchali (Nextron Systems), Florian Roth (Nextron Systems)
Source
upstream

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

MITRE ATT&CK coverage

TacticTechniques
ExecutionT1059 Command and Scripting Interpreter

Event coverage

ProviderEvent IDTitle
Sysmon1Process creation
Security-Auditing4688A new process has been created.

Stages and Predicates

Stage 1: selection

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

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

FieldKindValues
CommandLinematch
  • -NoExit -Command [Console]::OutputEncoding=[Text.UTF8Encoding]::UTF8