Query: detect Rule to detect the use of the SCX RunAsProvider ExecuteScript to execute any UNIX/Linux script using the /bin/sh shell. in logs
Matching passage: Sigma rule: Rule to detect the use of the SCX RunAsProvider ExecuteScript to execute any UNIX/Linux script using the /bin/sh shell.. Logsource: linux / process_creation. Rule: title: OMIGOD SCX RunAsProvider ExecuteScript id: 6eea1bf6-f8d2-488a-a742-e6ef6c1b67db status: test description: 'Rule to detect the use of the SCX RunAsProvider ExecuteScript to execute any UNIX/Linux script using the /bin/sh shell. Script being executed gets created as a temp file in /tmp folder with a scx* prefix. Then it is invoked from the following directory /etc/opt/microsoft/scx/conf/tmpdir/. The file in that directory has the same prefix scx*. 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: /etc/opt/microsoft/scx/conf/tmpdir/scx condition: selection falsepositives: - Legitimate use of SCX RunAsProvider ExecuteScript. level: high
Near-miss passage: Sigma rule: Office application called wmic to proxye execution through a LOLBIN process. This is often used to break suspicious pare. Logsource: windows / process_creation. Rule: title: Suspicious WMIC Execution Via Office Process id: e1693bc8-7168-4eab-8718-cdcaa68a1738 related: - id: 438025f9-5856-4663-83f7-52f878a70a50 type: derived - id: 518643ba-7d9c-4fa5-9f37-baed36059f6a type: obsolete - id: 9d1c72f5-43f0-4da5-9320-648cf2099dd0 type: obsolete - id: c0e1c3d5-4381-4f18-8145-2583f06a1fe5 type: obsolete - id: 04f5363a-6bca-42ff-be70-0d28bf629ead type: obsolete status: test description: Office application called wmic to proxye execution through a LOLBIN process. This is often used to break suspicious parent-child chain (Office app spawns LOLBin). references: - https://thedfirreport.com/2021/03/29/sodinokibi-aka-revil-ransomware/ - https://github.com/vadim-hunter/Detection-Ideas-Rules/blob/02bcbfc2bfb8b4da601bb30de0344ae453aa1afe/Threat%20Intelligence/The%20DFIR%20Report/20210329_Sodinokibi_(aka_REvil)_Ransomware.yaml author: Vadim Khrykov, Cyb3rEng date: 2021-08-23 modified: 2023-02-14 tags: - attack.stealth - attack.t1204.002 - attack.t1047 - attack.t1218.010 - attack.execution logsource: product: windows category: process_creation detection: selection_parent: ParentImage|endswith: - \WINWORD.EXE - \EXCEL.EXE - \POWERPNT.exe - \MSPUB.exe - \VISIO.exe - \MSACCESS.EXE - \EQNEDT32.EXE - \ONENOTE.EXE - \wordpad.exe - \wordview.exe selection_wmic_img: - Image|endswith: \wbem\WMIC.exe - OriginalFileName: wmic.exe selection_wmic_cli: CommandLine|contains|all: - process - create - call CommandLine|contains: - regsvr32 - rundll32 - msiexec - mshta - verclsid - wscript - cscript condition: all of selection_* falsepositives: - Unknown level: high