skills/mukul975/anthropic-cybersecurity-skills/detecting-fileless-malware-techniques/Gen Agent Trust Hub
detecting-fileless-malware-techniques
Fail
Audited by Gen Agent Trust Hub on Sep 22, 2026
Risk Level: CRITICALCOMMAND_EXECUTIONINDIRECT_PROMPT_INJECTION
Full Analysis
- [COMMAND_EXECUTION]: The
scripts/agent.pyscript performs forensic analysis by executing Windows utilities likewevtutil,reg, andpowershellviasubprocess.run. These calls use fixed argument lists to query system state and logs. - [INDIRECT_PROMPT_INJECTION]: The skill possesses an attack surface for indirect prompt injection as it processes untrusted data from external sources.
- Ingestion points: Reads content from Windows Event Logs (
.evtxfiles) and the Windows Registry usingscripts/agent.py. - Boundary markers: The script does not utilize explicit delimiters or 'ignore' instructions when outputting snippets of the ingested data.
- Capability inventory: The script has the capability to execute shell commands (
subprocess.run) and perform file system operations. - Sanitization: The script performs regex-based filtering to identify specific patterns and outputs results in a structured JSON format, but does not perform escaping on the logged data itself before presentation.
- [METADATA_POISONING]: The
SKILL.mdfile contains instructions to bypass antivirus warnings, labeling them as false positives. While this is a common malware technique, in the specific context of a security skill documenting malware signatures, it aligns with standard practice for handling signature-triggering research materials.
Recommendations
- CRITICAL: 1 infected file(s) detected - DO NOT USE
- CRITICAL: 1 file(s) identified as malware by FileRep - DO NOT USE
Audit Metadata