Suspicious Internet Explorer Helper Process Network Connection via network_connection

ATT&CK techniques

Priv Esc → Defense Evasion

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
- T1055.012Process Hollowing
Defense Evasion
- T1055.012Process Hollowing
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects outbound network connections originating from rarely-networked Internet Explorer helper binaries such as ieinstal.exe and ielowutil.exe. The REMCOS RAT injects into these signed processes to blend command-and-control traffic with trusted executables. Network activity from these utilities is anomalous and suggests process injection for evasion.

Reporting behind it

Related detections9 linkedT1055.012 — drag to rearrange

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Suspicious Internet Explorer Helper Process Network Connection via network_connection

Pivot detection · T1055.012 · 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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