Suspicious Cleo Autorun Healthcheck File Creation
- Product
- windows
- Category
- file_event
- Author
- HuntRule
- Published
- 2026-09-27
- Updated
- 2026-09-27
ATT&CK techniques
Initial AccessRecon
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 creation of the healthcheck and healthchecktemplate autorun files that Cleo software processes to trigger command execution, the entry point abused in active exploitation of CVE-2024-55956. Attackers drop these files into the monitored autorun directory to run malicious payloads. Their creation on a Cleo host indicates an exploitation attempt against the file transfer service.
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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