Malicious Cyclops Ransomware File Artifacts (via file_event)

ATT&CK techniques

Impact

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
- T1486Data Encrypted for Impact

What it detects

This rule detects creation of files carrying the .CYCLOPS encryption extension or the How To Restore Your Files.txt ransom note dropped by the Cyclops ransomware. These artifacts appear as the malware encrypts data and demands payment, marking an active impact stage of the intrusion.

Reporting behind it

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Malicious Cyclops Ransomware File Artifacts (via file_event)

Pivot detection · T1486 · 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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