Query: Sigma YAML for windows / process_creation
Matching passage: Sigma rule: Detects suspicious and uncommon child processes of WmiPrvSE. Logsource: windows / process_creation. Rule: title: Suspicious WmiPrvSE Child Process id: 8a582fe2-0882-4b89-a82a-da6b2dc32937 related: - id: 692f0bec-83ba-4d04-af7e-e884a96059b6 type: similar - id: d21374ff-f574-44a7-9998-4a8c8bf33d7d type: similar - id: 18cf6cf0-39b0-4c22-9593-e244bdc9a2d4 type: obsolete status: test description: Detects suspicious and uncommon child processes of WmiPrvSE 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 - https://blog.osarmor.com/319/onenote-attachment-delivers-asyncrat-malware/ - https://twitter.com/ForensicITGuy/status/1334734244120309760 author: Vadim Khrykov (ThreatIntel), Cyb3rEng, Florian Roth (Nextron Systems) date: 2021-08-23 modified: 2023-11-10 tags: - attack.execution - attack.stealth - attack.t1047 - attack.t1204.002 - attack.t1218.010 logsource: product: windows category: process_creation detection: selection_parent: ParentImage|endswith: \wbem\WmiPrvSE.exe selection_children_1: Image|endswith: - \certutil.exe - \cscript.exe - \mshta.exe - \msiexec.exe - \regsvr32.exe - \rundll32.exe - \verclsid.exe - \wscript.exe selection_children_2: Image|endswith: \cmd.exe CommandLine|contains: - cscript - mshta - powershell - pwsh - regsvr32 - rundll32 - wscript filter_main_werfault: Image|endswith: \WerFault.exe filter_main_wmiprvse: Image|endswith: \WmiPrvSE.exe filter_main_msiexec: Image|endswith: \msiexec.exe CommandLine|contains: '/i ' condition: selection_parent and 1 of selection_children_* and not 1 of filter_main_* falsepositives: - Unknown level: high
Near-miss passage: Sigma rule: Detects execution of the "esxcli" command with the "storage" flag in order to retrieve information about the storage sta. Logsource: linux / process_creation. Rule: title: ESXi Storage Information Discovery Via ESXCLI id: f41dada5-3f56-4232-8503-3fb7f9cf2d60 status: test description: Detects execution of the "esxcli" command with the "storage" flag in order to retrieve information about the storage status and other related information. Seen used by malware such as DarkSide and LockBit. references: - https://www.trendmicro.com/en_us/research/21/e/darkside-linux-vms-targeted.html - https://www.trendmicro.com/en_us/research/22/a/analysis-and-Impact-of-lockbit-ransomwares-first-linux-and-vmware-esxi-variant.html - https://developer.broadcom.com/xapis/esxcli-command-reference/7.0.0/namespace/esxcli_storage.html author: Nasreddine Bencherchali (Nextron Systems), Cedric Maurugeon date: 2023-09-04 tags: - attack.discovery - attack.execution - attack.t1033 - attack.t1007 - attack.t1059.012 logsource: category: process_creation product: linux detection: selection_img: Image|endswith: /esxcli CommandLine|contains: storage selection_cli: CommandLine|contains: - ' get' - ' list' condition: all of selection_* falsepositives: - Legitimate administration activities level: medium