Suspicious File Download via CertUtil URLCache (via process_creation)

ATT&CK techniques

C2

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
- T1105Ingress Tool Transfer
Exfiltration
Impact

What it detects

This rule detects certutil.exe used with URL cache flags to download a remote payload over HTTP. Following ActiveMQ exploitation the operators used CertUtil as a living-off-the-land downloader to stage tooling. Abuse of this signed utility bypasses application controls that trust native binaries.

Reporting behind it

Related detections9 linkedT1105 — drag to rearrange

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Suspicious File Download via CertUtil URLCache (via process_creation)

Pivot detection · T1105 · 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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