Suspicious Outbound Connection To MoonPeak C2 High Ports

ATT&CK techniques

C2

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
- T1219Remote Access Tools
- T1571Non-Standard Port
Exfiltration
Impact

What it detects

This rule detects outbound network connections to the non-standard high ports used by MoonPeak command-and-control infrastructure. MoonPeak a XenoRAT-based implant tracked to North Korean actors communicated with its C2 over ports 9999 9966 9936 and 8936. Beaconing to fixed uncommon high ports is a strong indicator of covert C2 that bypasses port-based egress assumptions.

Reporting behind it

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Suspicious Outbound Connection To MoonPeak C2 High Ports

Pivot detection · T1219 · 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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