Malicious Browser Credential Theft via rundll32 Loading move.dll (via process_creation)

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 the Interlock custom infostealer move.dll executed through rundll32.exe with a start argument, a DER key file and a target host to collect browser credential stores. The stolen data is written per host as a CSV file. This rundll32 invocation of move.dll with a key file is characteristic of the stealer.

Reporting behind it

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Malicious Browser Credential Theft via rundll32 Loading move.dll (via process_creation)

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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