DEWMODE Webshell Access
Detects access to DEWMODE webshell as described in FIREEYE report
Detection logic
selection1
cs-uri-query|contains|all:
- ?dwn=
- "&fn="
- .html?selection2
cs-uri-query|contains|all:
- "&dwn="
- ?fn=
- .html?Condition
1 of selection*Raw YAML
title: DEWMODE Webshell Access
id: fdf96c90-42d5-4406-8a9c-14a2c9a016b5
status: test
description: Detects access to DEWMODE webshell as described in FIREEYE report
references:
- https://www.mandiant.com/resources/blog/accellion-fta-exploited-for-data-theft-and-extortion
author: Florian Roth (Nextron Systems)
date: 2021-02-22
modified: 2023-01-02
tags:
- attack.persistence
- attack.t1505.003
- detection.emerging-threats
logsource:
category: webserver
detection:
selection1:
cs-uri-query|contains|all:
- '?dwn='
- '&fn='
- '.html?'
selection2:
cs-uri-query|contains|all:
- '&dwn='
- '?fn='
- '.html?'
condition: 1 of selection*
falsepositives:
- Unknown
level: highFalse positives
- Unknown