Suspicious Code Execution via InstallUtil LOLBIN (via process_creation)
- Product
- windows
- Category
- process_creation
- Author
- HuntRule
- Published
- 2026-09-02
- Updated
- 2026-09-02
ATT&CK techniques
Defense EvasionRecon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
What it detects
This rule detects InstallUtil.exe run with uninstall or log-suppression flags used to trigger attacker code in a .NET assembly's Uninstall method while avoiding console output, a signed-binary proxy technique. InstallUtil abuse is a defense-evasion technique tracked in the Red Canary Threat Detection Report. Detecting these command lines surfaces code execution under a trusted Microsoft utility.
Reporting behind it
Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.
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