Suspicious Scheduled Task Creation for Efimer Controller (via process_creation)

ATT&CK techniques

Execution → Priv Esc

Recon
Resource Dev
Initial Access
Execution
- T1053.005Scheduled Task
Persistence
- T1053.005Scheduled Task
Priv Esc
- T1053.005Scheduled Task
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects schtasks.exe registering a task that references controller.xml the scheduled-task definition used by the Efimer Trojan for persistence. Efimer establishes a recurring task to keep its clipboard clipper and Tor-based command channel running. A task built from an XML file named controller in user-writable space is an indicator of this infection.

Reporting behind it

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Suspicious Scheduled Task Creation for Efimer Controller (via process_creation)

Pivot detection · T1053.005 · 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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