Malicious Akira Ransomware Encrypted File 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 files being renamed with the .akira extension appended during encryption by Akira ransomware. Mass creation of .akira files indicates active encryption of the host.

Reporting behind it

Related detections9 linkedT1486 — drag to rearrange

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Possible Ransomware Note or Encrypted File Extension Creation

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INC Ransomware Ransom Note INC-README Written to Disk (via file_event)

Malicious DEVMAN Ransomware Encrypted File and Note Artifacts

Malicious BitLocker Abuse for Ransomware via PowerShell (via ps_script)

Malicious WeaXor Ransomware Encryption Artifacts on Disk (via file_event)

Malicious Akira Ransomware Encrypted File 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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