Suspicious Diamond Sleet C2 via LambLoad Addon PHP URI Pattern (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 outbound web requests to the LambLoad command and control URI structure using the bluemantis addon PHP endpoints. Diamond Sleet used these URIs during the CyberLink supply chain compromise to retrieve second-stage payloads and receive commands.

Reporting behind it

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Suspicious Diamond Sleet C2 via LambLoad Addon PHP URI Pattern (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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