{"id":"d2eb17db-1d39-41dc-b57f-301f6512fa75","title":"Potentially Suspicious Command Targeting Teams Sensitive Files","description":"Detects a commandline containing references to the Microsoft Teams database or cookies files from a process other than Teams.\nThe database might contain authentication tokens and other sensitive information about the logged in accounts.\n","author":"@SerkinValery","status":"test","level":"medium","date":"2022-09-16","modified":"2023-12-18","tags":["attack.credential-access","attack.t1528"],"technique_ids":["T1528"],"logsource":{"product":"windows","category":"process_creation"},"falsepositives":["Unknown"],"references":["https://www.bleepingcomputer.com/news/security/microsoft-teams-stores-auth-tokens-as-cleartext-in-windows-linux-macs/","https://www.vectra.ai/blogpost/undermining-microsoft-teams-security-by-mining-tokens"],"source_path":"rules/windows/process_creation/proc_creation_win_teams_suspicious_command_line_cred_access.yml","source_sha256":"8d3023810f3564d8173669818d0e7072a9f6663ad5d2ba5ef4e57bc452a3dd35","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_teams_suspicious_command_line_cred_access.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Potentially Suspicious Command Targeting Teams Sensitive Files\nid: d2eb17db-1d39-41dc-b57f-301f6512fa75\nstatus: test\ndescription: |\n    Detects a commandline containing references to the Microsoft Teams database or cookies files from a process other than Teams.\n    The database might contain authentication tokens and other sensitive information about the logged in accounts.\nreferences:\n    - https://www.bleepingcomputer.com/news/security/microsoft-teams-stores-auth-tokens-as-cleartext-in-windows-linux-macs/\n    - https://www.vectra.ai/blogpost/undermining-microsoft-teams-security-by-mining-tokens\nauthor: '@SerkinValery'\ndate: 2022-09-16\nmodified: 2023-12-18\ntags:\n    - attack.credential-access\n    - attack.t1528\nlogsource:\n    product: windows\n    category: process_creation\ndetection:\n    selection:\n        CommandLine|contains:\n            - '\\Microsoft\\Teams\\Cookies'\n            - '\\Microsoft\\Teams\\Local Storage\\leveldb'\n    filter_main_legit_locations:\n        Image|endswith: '\\Microsoft\\Teams\\current\\Teams.exe'\n    condition: selection and not 1 of filter_main_*\nfalsepositives:\n    - Unknown\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1528","id":"T1528","name":"Steal Application Access Token","page":"techniques/enterprise/T1528/"}],"data_path":"data/detection-rules/d2eb17db-1d39-41dc-b57f-301f6512fa75.json","kind":"sigma"}