SigmaHQ/rules/windows/sysmon/sysmon_rundll32_net_connections.yml
2018-07-26 21:15:07 -07:00

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YAML

title: Rundll32 Internet Connection
status: experimental
description: Detects a rundll32 that communicates with public IP addresses
references:
- https://www.hybrid-analysis.com/sample/759fb4c0091a78c5ee035715afe3084686a8493f39014aea72dae36869de9ff6?environmentId=100
author: Florian Roth
date: 2017/11/04
tags:
- attack.t1085
- attack.defense_evasion
- attack.execution
logsource:
product: windows
service: sysmon
detection:
selection:
EventID: 3
Image: '*\rundll32.exe'
filter:
DestinationIp:
- '10.*'
- '192.168.*'
- '172.*'
condition: selection and not filter
falsepositives:
- Communication to other corporate systems that use IP addresses from public address spaces
level: medium