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47 lines
1.3 KiB
YAML
Executable File
47 lines
1.3 KiB
YAML
Executable File
title: Rundll32 Internet Connection
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id: cdc8da7d-c303-42f8-b08c-b4ab47230263
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status: experimental
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description: Detects a rundll32 that communicates with public IP addresses
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references:
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- https://www.hybrid-analysis.com/sample/759fb4c0091a78c5ee035715afe3084686a8493f39014aea72dae36869de9ff6?environmentId=100
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author: Florian Roth
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date: 2017/11/04
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modified: 2020/08/24
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tags:
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- attack.defense_evasion
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- attack.t1218.011
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- attack.t1085 # an old one
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- attack.execution
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logsource:
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category: network_connection
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product: windows
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detection:
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selection:
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Image: '*\rundll32.exe'
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Initiated: 'true'
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filter:
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DestinationIp:
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- '10.*'
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- '192.168.*'
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- '172.16.*'
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- '172.17.*'
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- '172.18.*'
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- '172.19.*'
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- '172.20.*'
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- '172.21.*'
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- '172.22.*'
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- '172.23.*'
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- '172.24.*'
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- '172.25.*'
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- '172.26.*'
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- '172.27.*'
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- '172.28.*'
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- '172.29.*'
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- '172.30.*'
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- '172.31.*'
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- '127.*'
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condition: selection and not filter
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falsepositives:
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- Communication to other corporate systems that use IP addresses from public address spaces
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level: medium
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