Malicious Cryptominer Execution via AddInProcess with XMRig Arguments (via process_creation)

ATT&CK techniques

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Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
- T1055Process Injection
Defense Evasion
- T1055Process Injection
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
- T1496Resource Hijacking

What it detects

This rule detects AddInProcess.exe launched with XMRig style mining arguments such as cpu-max-threads-hint or the rx/0 algorithm, the process injection host the 8220 Gang uses to run its Monero-family cryptominer. Abusing the signed AddInProcess binary hides the miner inside a trusted .NET component. Detecting these mining arguments surfaces resource-hijacking cryptomining activity.

Reporting behind it

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Malicious Cryptominer Execution via AddInProcess with XMRig Arguments (via process_creation)

Pivot detection · T1055 · 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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