Sigma rule: Antivirus - Relevant File Paths Alerts Signature

Rule

Title

Antivirus - Relevant File Paths Alerts Signature

Status

test

Level

high

Author

Florian Roth (Nextron Systems), Arnim Rupp

Date

2018-09-09

Modified

2026-06-29

File

rules/category/antivirus/av_relevant_files.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects an Antivirus alert in a highly relevant file path or with a relevant file name.
This event must not be ignored just because the AV has blocked the malware but investigate, how it came there in the first place.

Log source

category

antivirus

Detection

selection_path:
    Filename|contains:
        - ':\PerfLogs\'
        - ':\Temp\'
        - ':\Users\Default\'
        - ':\Users\Public\'
        - ':\Windows\'
        - '/www/'
        # - '\Client\'
        - '\inetpub\'
        - '\tsclient\'
        - 'apache'
        - 'nginx'
        - 'tomcat'
        - 'weblogic'
selection_ext:
    Filename|endswith:
        - '.asax'
        - '.ashx'
        - '.asmx'
        - '.asp'
        - '.aspx'
        - '.bat'
        - '.cfm'
        - '.cgi'
        - '.chm'
        - '.cmd'
        - '.dat'
        - '.ear'
        - '.gif'
        - '.hta'
        - '.jpeg'
        - '.jpg'
        - '.jsp'
        - '.jspx'
        - '.lnk'
        - '.msc'
        - '.php'
        - '.pl'
        - '.png'
        - '.ps1'
        - '.psm1'
        - '.py'
        - '.pyc'
        - '.rb'
        - '.scf'
        - '.sct'
        - '.sh'
        - '.svg'
        - '.txt'
        - '.vbe'
        - '.vbs'
        - '.war'
        - '.wll'
        - '.wsf'
        - '.wsh'
        - '.xll'
        - '.xml'
condition: 1 of selection_*

False positives (as the rule lists them)

• Unlikely

Tags

• attack.resource-development
• attack.t1588

MITRE ATT&CK ids this rule names

• T1588

References

• https://www.nextron-systems.com/?s=antivirus

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/category/antivirus/av_relevant_files.yml