Suspicious msxsl Execution with Text Script Dropper
- Product
- windows
- Category
- process_creation
- Author
- HuntRule
- Published
- 2026-08-05
- Updated
- 2026-08-28
ATT&CK techniques
Defense EvasionRecon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
What it detects
This rule detects the msxsl utility being used to process a txt file as a script transformation. More_eggs operators abused msxsl with txt hosted JScript droppers to execute code outside normal script interpreters. This LOLBIN abuse bypasses application controls that only watch common scripting hosts.
Reporting behind it
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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