frack113
33 lines
798 B
YAML
33 lines
798 B
YAML
title: DEWMODE Webshell Access
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id: fdf96c90-42d5-4406-8a9c-14a2c9a016b5
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status: test
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description: Detects access to DEWMODE webshell as described in FIREEYE report
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references:
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- https://www.fireeye.com/blog/threat-research/2021/02/accellion-fta-exploited-for-data-theft-and-extortion.html
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author: Florian Roth
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date: 2021/02/22
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modified: 2023/01/02
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tags:
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- attack.persistence
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- attack.t1505.003
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logsource:
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category: webserver
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detection:
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selection1:
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cs-uri-query|contains|all:
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- '?dwn='
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- '&fn='
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- '.html?'
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selection2:
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cs-uri-query|contains|all:
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- '&dwn='
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- '?fn='
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- '.html?'
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condition: 1 of selection*
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fields:
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- client_ip
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- response
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falsepositives:
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- Unknown
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level: high
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