OMIGOD SCX RunAsProvider ExecuteShellCommand
Rule to detect the use of the SCX RunAsProvider Invoke_ExecuteShellCommand to execute any UNIX/Linux command using the /bin/sh shell. SCXcore, started as the Microsoft Operations Manager UNIX/Linux Agent, is now used in a host of products including Microsoft Operations Manager, Microsoft Azure, and Microsoft Operations Management Suite.
Detection logic
selection
User: root
LogonId: 0
CurrentDirectory: /var/opt/microsoft/scx/tmp
CommandLine|contains: /bin/shCondition
selectionRaw YAML
title: OMIGOD SCX RunAsProvider ExecuteShellCommand
id: 21541900-27a9-4454-9c4c-3f0a4240344a
status: test
description: |
Rule to detect the use of the SCX RunAsProvider Invoke_ExecuteShellCommand to execute any UNIX/Linux command using the /bin/sh shell.
SCXcore, started as the Microsoft Operations Manager UNIX/Linux Agent, is now used in a host of products including
Microsoft Operations Manager, Microsoft Azure, and Microsoft Operations Management Suite.
references:
- https://www.wiz.io/blog/omigod-critical-vulnerabilities-in-omi-azure
- https://github.com/Azure/Azure-Sentinel/pull/3059
author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research), MSTIC
date: 2021-10-15
modified: 2022-10-05
tags:
- attack.privilege-escalation
- attack.initial-access
- attack.execution
- attack.t1068
- attack.t1190
- attack.t1203
logsource:
product: linux
category: process_creation
detection:
selection:
User: root
LogonId: 0
CurrentDirectory: '/var/opt/microsoft/scx/tmp'
CommandLine|contains: '/bin/sh'
condition: selection
falsepositives:
- Legitimate use of SCX RunAsProvider Invoke_ExecuteShellCommand.
level: highFalse positives
- Legitimate use of SCX RunAsProvider Invoke_ExecuteShellCommand.
References
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