Malicious SessionGopher Credential Extraction via PowerShell (via ps_script)

ATT&CK techniques

Cred Access

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
- T1555.003Credentials from Web Browsers
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects invocation of the SessionGopher tool through PowerShell which LockBit builder-based ransomware operators use to extract saved session credentials from PuTTY WinSCP and RDP prior to lateral movement and encryption.

Reporting behind it

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Malicious SessionGopher Credential Extraction via PowerShell (via ps_script)

Pivot detection · T1555.003 · 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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