Malicious Mallox Ransomware Encryption Artifacts via Ransom Note and Extension (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 the Mallox ransomware ransom note READ_THIS_NOW.txt or files renamed with the Mallox encrypted extensions lmallox and locked. These artifacts are dropped by the Mallox ransomware Linux variant while encrypting host data with AES-256-CBC. Detecting them early exposes active ransomware encryption before the operator completes impact on the environment.

Reporting behind it

Related detections9 linkedT1486 — drag to rearrange

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Malicious Dire Wolf Ransomware Encrypted File Extension on Disk (via file_event)

Malicious Lynx Ransomware Encryption Execution (via process_creation)

Malicious JADEPUFFER Lockd Encryptor Execution

Suspicious Mass Locked Extension File Creation by Ransomware

Malicious Interlock Ransomware Encrypted File and Note Creation (via file_event)

Malicious Mallox Ransomware Encryption Artifacts via Ransom Note and Extension (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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