{"id":"882e858a-3233-4ba8-855e-2f3d3575803d","title":"DNS Query Request By QuickAssist.EXE","description":"Detects DNS queries initiated by \"QuickAssist.exe\" to Microsoft Quick Assist primary endpoint that is used to establish a session.\n","author":"Muhammad Faisal (@faisalusuf)","status":"experimental","level":"low","date":"2024-12-19","modified":"","tags":["attack.command-and-control","attack.initial-access","attack.lateral-movement","attack.t1071.001","attack.t1210"],"technique_ids":["T1071.001","T1210"],"logsource":{"category":"dns_query","product":"windows"},"falsepositives":["Legitimate use of Quick Assist in the environment."],"references":["https://www.microsoft.com/en-us/security/blog/2024/05/15/threat-actors-misusing-quick-assist-in-social-engineering-attacks-leading-to-ransomware/","https://www.linkedin.com/posts/kevin-beaumont-security_ive-been-assisting-a-few-orgs-hit-with-successful-activity-7268055739116445701-xxjZ/","https://x.com/cyb3rops/status/1862406110365245506","https://learn.microsoft.com/en-us/windows/client-management/client-tools/quick-assist"],"source_path":"rules/windows/dns_query/dns_query_win_quickassist.yml","source_sha256":"6c15a3ed0bfd264a944d4c0777ab0b0bc00c700c9e5e09fb286034f289d5a186","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/dns_query/dns_query_win_quickassist.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: DNS Query Request By QuickAssist.EXE\nid: 882e858a-3233-4ba8-855e-2f3d3575803d\nstatus: experimental\ndescription: |\n    Detects DNS queries initiated by \"QuickAssist.exe\" to Microsoft Quick Assist primary endpoint that is used to establish a session.\nreferences:\n    - https://www.microsoft.com/en-us/security/blog/2024/05/15/threat-actors-misusing-quick-assist-in-social-engineering-attacks-leading-to-ransomware/\n    - https://www.linkedin.com/posts/kevin-beaumont-security_ive-been-assisting-a-few-orgs-hit-with-successful-activity-7268055739116445701-xxjZ/\n    - https://x.com/cyb3rops/status/1862406110365245506\n    - https://learn.microsoft.com/en-us/windows/client-management/client-tools/quick-assist\nauthor: Muhammad Faisal (@faisalusuf)\ndate: 2024-12-19\ntags:\n    - attack.command-and-control\n    - attack.initial-access\n    - attack.lateral-movement\n    - attack.t1071.001\n    - attack.t1210\nlogsource:\n    category: dns_query\n    product: windows\ndetection:\n    selection:\n        Image|endswith: '\\QuickAssist.exe'\n        QueryName|endswith: 'remoteassistance.support.services.microsoft.com'\n    condition: selection\nfalsepositives:\n    - Legitimate use of Quick Assist in the environment.\nlevel: low\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1071.001","id":"T1071.001","name":"Web Protocols","page":"techniques/enterprise/T1071.001/"},{"key":"enterprise/T1210","id":"T1210","name":"Exploitation of Remote Services","page":"techniques/enterprise/T1210/"}],"data_path":"data/detection-rules/882e858a-3233-4ba8-855e-2f3d3575803d.json","kind":"sigma"}