Malicious rundll32 IternalJob Export Spawned by wscript (via process_creation)

ATT&CK techniques

Execution → Defense Evasion

Recon
Resource Dev
Initial Access
Execution
- T1059.005Visual Basic
Persistence
Priv Esc
Defense Evasion
- T1218.011Rundll32
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects wscript.exe spawning rundll32.exe to call the IternalJob export, the execution chain used by the BumbleBee loader launched from a VBS script via a scheduled task. The misspelled IternalJob export name is a specific loader artifact. This chain proxies malicious code execution through a signed binary to load BumbleBee and stage follow-on payloads.

Reporting behind it

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Malicious rundll32 IternalJob Export Spawned by wscript (via process_creation)

Pivot detection · T1218.011 · 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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