Masquerading Systemd Service Masquerade via Systemctl Reenable of rsyslogd (via process_creation)

ATT&CK techniques

Persistence → Defense Evasion

Recon
Resource Dev
Initial Access
Execution
Persistence
- T1543.002Systemd Service
Priv Esc
- T1543.002Systemd Service
Defense Evasion
- T1036.004Masquerade Task or Service
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects systemctl reenabling a service named rsyslogd, the persistence behavior of the Kimsuky Gomir variant that installs a malicious rsyslogd service to impersonate the legitimate rsyslog logging daemon. Adversaries leverage the trailing d suffix to blend with real system services while ensuring the implant restarts, making early detection critical for surfacing masqueraded persistence before further intrusion activity.

Reporting behind it

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Masquerading Systemd Service Masquerade via Systemctl Reenable of rsyslogd (via process_creation)

Pivot detection · T1543.002 · 9 related

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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