{"id":"88a87a10-384b-4ad7-8871-2f9bf9259ce5","title":"Suspicious Regsvr32 Execution From Remote Share","description":"Detects REGSVR32.exe to execute DLL hosted on remote shares","author":"Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"high","date":"2022-10-31","modified":"","tags":["attack.stealth","attack.t1218.010"],"technique_ids":["T1218.010"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unknown"],"references":["https://thedfirreport.com/2022/10/31/follina-exploit-leads-to-domain-compromise/"],"source_path":"rules/windows/process_creation/proc_creation_win_regsvr32_remote_share.yml","source_sha256":"545a62df8c65c9fca2650fac4aab9737d1e538fa3b5c92863e3dd9a559234177","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_regsvr32_remote_share.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 Regsvr32 Execution From Remote Share\nid: 88a87a10-384b-4ad7-8871-2f9bf9259ce5\nstatus: test\ndescription: Detects REGSVR32.exe to execute DLL hosted on remote shares\nreferences:\n    - https://thedfirreport.com/2022/10/31/follina-exploit-leads-to-domain-compromise/\nauthor: Nasreddine Bencherchali (Nextron Systems)\ndate: 2022-10-31\ntags:\n    - attack.stealth\n    - attack.t1218.010\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_img:\n        - Image|endswith: '\\regsvr32.exe'\n        - OriginalFileName: '\\REGSVR32.EXE'\n    selection_cli:\n        CommandLine|contains: ' \\\\\\\\'\n    condition: all of selection_*\nfalsepositives:\n    - Unknown\n# Decrease to medium if this is something common in your org\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1218.010","id":"T1218.010","name":"Regsvr32","page":"techniques/enterprise/T1218.010/"}],"data_path":"data/detection-rules/88a87a10-384b-4ad7-8871-2f9bf9259ce5.json","kind":"sigma"}