Possible PHP Webshell Access After Malicious ZIP Upload (via webserver)
- Category
- webserver
- Author
- HuntRule
- Published
- 2026-09-07
- Updated
- 2026-09-07
ATT&CK techniques
Initial Access → PersistenceRecon
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 requests to a PHP file named workdone.php served from a work directory, the webshell dropped by extracting a malicious ZIP into /www/work/ during the Mozilla AWS code-execution research. Access to this out-of-place PHP file indicates a planted webshell being used for remote command execution. Detecting it surfaces post-exploitation control of the compromised host.
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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