SigmaHQ/rules/windows/malware/av_webshell.yml
2020-06-16 14:46:08 -06:00

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YAML

title: Antivirus Web Shell Detection
id: fdf135a2-9241-4f96-a114-bb404948f736
description: Detects a highly relevant Antivirus alert that reports a web shell
date: 2018/09/09
modified: 2019/10/04
author: Florian Roth
references:
- https://www.nextron-systems.com/2018/09/08/antivirus-event-analysis-cheat-sheet-v1-4/
tags:
- attack.persistence
- attack.t1100
- attack.t1505.003
logsource:
product: antivirus
detection:
selection:
Signature:
- "PHP/Backdoor*"
- "JSP/Backdoor*"
- "ASP/Backdoor*"
- "Backdoor.PHP*"
- "Backdoor.JSP*"
- "Backdoor.ASP*"
- "*Webshell*"
condition: selection
fields:
- FileName
- User
falsepositives:
- Unlikely
level: critical