Suspicious Batch Fake Installer Spawning PowerShell Downloader via OXLoader

ATT&CK techniques

Execution

Recon
Resource Dev
Initial Access
Execution
- T1059.001PowerShell
- T1204.002Malicious File
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects a batch script masquerading as an installer that spawns PowerShell to download a remote executable as used by the OXLoader loader chain delivering CASTLESTEALER in Elastic research. A cmd hosted bat launching PowerShell with a download command is an early stage indicator of the fake installer social engineering lure.

Reporting behind it

Related detections9 linkedT1059.001 — drag to rearrange

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Suspicious Batch Fake Installer Spawning PowerShell Downloader via OXLoader

Pivot detection · T1059.001 · 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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