Synopsis
Activation Period |
14 Days |
Training Period |
30 Days |
Test Period |
N/A (single event) |
Deduplication Period |
1 Day |
Required Data |
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Detection Modules |
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Detector Tags |
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ATT&CK Tactic |
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ATT&CK Technique |
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Severity |
Informational |
Description
An uncommon file with a web file extension was created, written or renamed by a web server process.
Attacker's Goals
Gaining the ability to execute commands on the host, as well as persistence.
Investigative actions
- Investigate the web server access logs for suspicious behavior.
- Check if the dropped file contains malicious content.
Variations
Possible webshell file written by a node web server processPossible webshell file written by a web server process in an internet facing server
Possible webshell file written by a web server process with connections from various sources and high web traffic