Suspicious Credential Store Access for WinSCP and PuTTY via PowerShell (via ps_script)

ATT&CK techniques

Cred Access

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
- T1555Credentials from Password Stores
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects PowerShell script content referencing WinSCP and PuTTY session registry stores or the Windows Credential Manager enumeration API, the credential theft behavior of the SEO poisoning infostealer. These paths and calls harvest saved SSH, SFTP and enterprise credentials. Scripts touching these secrets stores are a strong credential access indicator.

Reporting behind it

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Suspicious Credential Store Access for WinSCP and PuTTY via PowerShell (via ps_script)

Pivot detection · T1555 · 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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