Malicious FIN7 DiceLoader C2 via Placeholder User-Agent (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 command-and-control traffic carrying the literal placeholder user-agent myUserAgentHere, left hardcoded in the FIN7 DiceLoader beacon to cdn*.space infrastructure. No legitimate software presents this developer placeholder string, making it a high-confidence C2 indicator. It surfaces active FIN7 post-exploitation communication.

Reporting behind it

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Malicious FIN7 DiceLoader C2 via Placeholder User-Agent (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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