Malicious Akira Ransomware Execution via Encryption Command-Line Parameters

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 process execution using the distinctive encryption command-line parameters of the Akira ransomware encryptor, matching intrusions where a renamed akira.exe is run against mounted network shares. The switches control encryption scope and percentage across targeted paths and shares. Detecting these parameters catches the encryptor even when the binary is renamed to evade name-based controls.

Reporting behind it

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Malicious Akira Ransomware Execution via Encryption Command-Line Parameters

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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