Suspicious AutoIt3 Compiled Script Execution via A3X File
- Product
- windows
- Category
- process_creation
- Author
- HuntRule
- Published
- 2026-09-06
- Updated
- 2026-09-06
ATT&CK techniques
ExecutionRecon
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 AutoIt3.exe executing a compiled .a3x script, a technique used by CastleLoader to run obfuscated AutoIt payloads dropped by an Inno Setup installer. Compiled AutoIt scripts are commonly abused by loaders to stage further code injection.
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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Also included
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