skills/mukul975/anthropic-cybersecurity-skills/detecting-fileless-attacks-on-endpoints/Gen Agent Trust Hub
detecting-fileless-attacks-on-endpoints
Pass
Audited by Gen Agent Trust Hub on Sep 15, 2026
Risk Level: SAFEEXTERNAL_DOWNLOADSPRIVILEGE_ESCALATIONINDIRECT_PROMPT_INJECTION
Full Analysis
- [EXTERNAL_DOWNLOADS]: The script
agent.pyreferences thepython-evtxlibrary for parsing Windows Event Log files. This is a standard and well-recognized library used in the forensic analysis and security community for its intended purpose of log processing. - [PRIVILEGE_ESCALATION]: The skill provides PowerShell instructions to modify registry keys within
HKLM:\SOFTWARE\Policies\Microsoft\Windows\PowerShell\to enable Script Block and Module Logging. While these modifications require administrative privileges, they are standard defensive configuration steps necessary for generating the telemetry this skill is designed to analyze. - [INDIRECT_PROMPT_INJECTION]: The skill is designed to process external and potentially untrusted log data (EVTX and CSV logs) which could contain attacker-controlled script content. The analysis confirms that the processing scripts (
agent.py,process.py) use regex for pattern matching and do not execute or evaluate the content of the logs, effectively mitigating the risk of instructions in the logs affecting the agent. - Ingestion points:
agent.pyprocesses.evtxfiles andprocess.pyprocesses.csvfiles. - Boundary markers: The scripts rely on the structured nature of the log formats (XML data in EVTX and delimited rows in CSV) to isolate data fields.
- Capability inventory: The analysis identified file read operations and regex matching; there are no
exec,eval, or subprocess calls that interact with the parsed log content. - Sanitization: The scripts truncate extracted script excerpts to 300 characters, preventing the propagation of large payloads into the detection reports.
Audit Metadata