{"id":"b98d0db6-511d-45de-ad02-e82a98729620","title":"Remotely Hosted HTA File Executed Via Mshta.EXE","description":"Detects execution of the \"mshta\" utility with an argument containing the \"http\" keyword, which could indicate that an attacker is executing a remotely hosted malicious hta file","author":"Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"high","date":"2022-08-08","modified":"2023-02-06","tags":["attack.execution","attack.stealth","attack.t1218.005"],"technique_ids":["T1218.005"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unknown"],"references":["https://www.trendmicro.com/en_us/research/22/e/avoslocker-ransomware-variant-abuses-driver-file-to-disable-anti-Virus-scans-log4shell.html"],"source_path":"rules/windows/process_creation/proc_creation_win_mshta_http.yml","source_sha256":"d5af7276f3248ae81e0521b1cd97c9f363a05482744b1b3a223dd459ed9b7921","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_mshta_http.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Remotely Hosted HTA File Executed Via Mshta.EXE\nid: b98d0db6-511d-45de-ad02-e82a98729620\nstatus: test\ndescription: Detects execution of the \"mshta\" utility with an argument containing the \"http\" keyword, which could indicate that an attacker is executing a remotely hosted malicious hta file\nreferences:\n    - https://www.trendmicro.com/en_us/research/22/e/avoslocker-ransomware-variant-abuses-driver-file-to-disable-anti-Virus-scans-log4shell.html\nauthor: Nasreddine Bencherchali (Nextron Systems)\ndate: 2022-08-08\nmodified: 2023-02-06\ntags:\n    - attack.execution\n    - attack.stealth\n    - attack.t1218.005\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_img:\n        - Image|endswith: '\\mshta.exe'\n        - OriginalFileName: 'MSHTA.EXE'\n    selection_cli:\n        CommandLine|contains:\n            - 'http://'\n            - 'https://'\n            - 'ftp://'\n    condition: all of selection_*\nfalsepositives:\n    - Unknown\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1218.005","id":"T1218.005","name":"Mshta","page":"techniques/enterprise/T1218.005/"}],"data_path":"data/detection-rules/b98d0db6-511d-45de-ad02-e82a98729620.json","kind":"sigma"}