Malicious WmRAT C2 Beacon via excerorderslist Endpoint (via proxy)

ATT&CK techniques

C2

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
- T1071.001Web Protocols
Exfiltration
Impact

What it detects

This rule detects WmRAT command-and-control beacons to the excerorderslistoncbook PHP endpoint carrying the vrocean parameter with a Base64-encoded victim identifier. This URI and parameter pairing is unique to the Bitter APT PTCL campaign infrastructure. Traffic matching both is a high-confidence C2 indicator.

Reporting behind it

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Malicious WmRAT C2 Beacon via excerorderslist Endpoint (via proxy)

Pivot detection · T1071.001 · 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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