Malicious Web Server Process Spawning Command Interpreter via Web Shell (via process_creation)

ATT&CK techniques

Execution → Persistence

Recon
Resource Dev
Initial Access
Execution
- T1059Command and Scripting Interpreter
Persistence
- T1505.003Web Shell
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects IIS or Java web server worker processes spawning a command interpreter or reconnaissance utility. Weaver Ant operated web shells on internet facing servers and executed living off the land commands directly from the web service context, a chain that is uncommon during normal web application activity.

Reporting behind it

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Malicious Web Server Process Spawning Command Interpreter via Web Shell (via process_creation)

Pivot detection · T1505.003 · 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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