SigmaHQ/rules/windows/process_access/sysmon_direct_syscall_ntopenprocess.yml
2021-08-18 18:58:20 +00:00

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title: Direct Syscall of NtOpenProcess
id: 3f3f3506-1895-401b-9cc3-e86b16e630d0
description: Detects the usage of the direct syscall of NtOpenProcess which might be done from a CobaltStrike BOF.
references:
- https://medium.com/falconforce/falconfriday-direct-system-calls-and-cobalt-strike-bofs-0xff14-741fa8e1bdd6
status: experimental
author: Christian Burkard
date: 2021/07/28
logsource:
category: process_access
product: windows
detection:
selection:
CallTrace|startswith: 'UNKNOWN'
condition: selection
falsepositives:
- unknown
level: critical
tags:
- attack.execution
- attack.t1106