Query: rule covering Detects usage of the "Add-AppxPackage" or it's alias "Add-AppPackage" to install unsigned AppX packages
Matching passage: Sigma rule: Detects usage of the "Add-AppxPackage" or it's alias "Add-AppPackage" to install unsigned AppX packages. Logsource: windows / process_creation. Rule: title: Unsigned AppX Installation Attempt Using Add-AppxPackage id: 37651c2a-42cd-4a69-ae0d-22a4349aa04a related: - id: 975b2262-9a49-439d-92a6-0709cccdf0b2 type: similar - id: 9a025188-6f2d-42f8-bb2f-d3a83d24a5af type: similar status: test description: Detects usage of the "Add-AppxPackage" or it's alias "Add-AppPackage" to install unsigned AppX packages references: - https://learn.microsoft.com/en-us/windows/msix/package/unsigned-package - https://twitter.com/WindowsDocs/status/1620078135080325122 author: Nasreddine Bencherchali (Nextron Systems) date: 2023-01-31 tags: - attack.persistence - attack.stealth logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: - \powershell.exe - \pwsh.exe - OriginalFileName: - PowerShell.EXE - pwsh.dll selection_cmdlet: CommandLine|contains: - 'Add-AppPackage ' - 'Add-AppxPackage ' selection_flag: CommandLine|contains: ' -AllowUnsigned' condition: all of selection_* falsepositives: - Installation of unsigned packages for testing purposes level: medium
Near-miss passage: Sigma rule: Detects cobalt strike malleable profiles patterns (URI, User-Agents, Methods).. Logsource: proxy. Rule: title: HackTool - CobaltStrike Malleable Profile Patterns - Proxy id: f3f21ce1-cdef-4bfc-8328-ed2e826f5fac related: - id: 953b895e-5cc9-454b-b183-7f3db555452e type: obsolete - id: 41b42a36-f62c-4c34-bd40-8cb804a34ad8 type: obsolete - id: 37325383-740a-403d-b1a2-b2b4ab7992e7 type: obsolete - id: c9b33401-cc6a-4cf6-83bb-57ddcb2407fc type: obsolete status: test description: Detects cobalt strike malleable profiles patterns (URI, User-Agents, Methods). references: - https://github.com/rsmudge/Malleable-C2-Profiles/blob/26323784672913923d20c5a638c6ca79459e8529/normal/amazon.profile - https://www.hybrid-analysis.com/sample/ee5eca8648e45e2fea9dac0d920ef1a1792d8690c41ee7f20343de1927cc88b9?environmentId=100 - https://github.com/rsmudge/Malleable-C2-Profiles/blob/26323784672913923d20c5a638c6ca79459e8529/normal/ocsp.profile - https://github.com/yeyintminthuhtut/Malleable-C2-Profiles-Collection/ - https://github.com/rsmudge/Malleable-C2-Profiles/blob/26323784672913923d20c5a638c6ca79459e8529/normal/onedrive_getonly.profile author: Markus Neis, Florian Roth (Nextron Systems) date: 2024-02-15 tags: - attack.command-and-control - attack.t1071.001 logsource: category: proxy detection: selection_amazon_1: c-useragent: Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko cs-method: GET c-uri: /s/ref=nb_sb_noss_1/167-3294888-0262949/field-keywords=books cs-host: www.amazon.com cs-cookie|endswith: =csm-hit=s-24KU11BB82RZSYGJ3BDK|1419899012996 selection_amazon_2: c-useragent: Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko cs-method: POST c-uri: /N4215/adj/amzn.us.sr.aps cs-host: www.amazon.com selection_generic_1: c-useragent: - Mozilla/4.0 (compatible; MSIE 6.0;Windows NT 5.1) - Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E ) - Mozilla/5.0 (Windows; U; MSIE 7.0; Windows NT 5.2) Java/1.5.0_08 selection_generic_2: c-useragent|endswith: ; MANM; MANM) selection_oscp: c-uri|contains: /oscp/ cs-host: ocsp.verisign.com selection_onedrive: cs-method: GET c-uri|endswith: \?manifest=wac cs-host: onedrive.live.com filter_main_onedrive: c-uri|startswith: http c-uri|contains: ://onedrive.live.com/ condition: 1 of selection_* and not 1 of filter_main_* falsepositives: - Unknown level: high