{"id":"731231b9-0b5d-4219-94dd-abb6959aa7ea","title":"Suspicious Rundll32 Activity Invoking Sys File","description":"Detects suspicious process related to rundll32 based on command line that includes a *.sys file as seen being used by UNC2452","author":"Florian Roth (Nextron Systems)","status":"test","level":"high","date":"2021-03-05","modified":"2022-10-09","tags":["attack.stealth","attack.t1218.011"],"technique_ids":["T1218.011"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unknown"],"references":["https://www.microsoft.com/security/blog/2021/03/04/goldmax-goldfinder-sibot-analyzing-nobelium-malware/"],"source_path":"rules/windows/process_creation/proc_creation_win_rundll32_sys.yml","source_sha256":"c04a0e54cce5f0c435841ab7ef1e349d3a3aa6e76189ad3bef58bf2c3018572b","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_rundll32_sys.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Suspicious Rundll32 Activity Invoking Sys File\nid: 731231b9-0b5d-4219-94dd-abb6959aa7ea\nstatus: test\ndescription: Detects suspicious process related to rundll32 based on command line that includes a *.sys file as seen being used by UNC2452\nreferences:\n    - https://www.microsoft.com/security/blog/2021/03/04/goldmax-goldfinder-sibot-analyzing-nobelium-malware/\nauthor: Florian Roth (Nextron Systems)\ndate: 2021-03-05\nmodified: 2022-10-09\ntags:\n    - attack.stealth\n    - attack.t1218.011\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection1:\n        CommandLine|contains: 'rundll32.exe'\n    selection2:\n        CommandLine|contains:\n            - '.sys,'\n            - '.sys '\n    condition: all of selection*\nfalsepositives:\n    - Unknown\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1218.011","id":"T1218.011","name":"Rundll32","page":"techniques/enterprise/T1218.011/"}],"data_path":"data/detection-rules/731231b9-0b5d-4219-94dd-abb6959aa7ea.json","kind":"sigma"}