{"id":"9f2cc74d-78af-4eb2-bb64-9cd1d292b87b","title":"Microsoft Sync Center Suspicious Network Connections","description":"Detects suspicious connections from Microsoft Sync Center to non-private IPs.","author":"elhoim","status":"test","level":"medium","date":"2022-04-28","modified":"2024-03-12","tags":["attack.privilege-escalation","attack.stealth","attack.t1055","attack.t1218","attack.execution"],"technique_ids":["T1055","T1218"],"logsource":{"product":"windows","category":"network_connection"},"falsepositives":["Unknown"],"references":["https://redcanary.com/blog/intelligence-insights-november-2021/"],"source_path":"rules/windows/network_connection/net_connection_win_susp_outbound_mobsync_connection.yml","source_sha256":"bb72c43389667018c61f395c8209259e001bf0bb14c3a0caa03a01367f0a3c8b","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/network_connection/net_connection_win_susp_outbound_mobsync_connection.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Microsoft Sync Center Suspicious Network Connections\nid: 9f2cc74d-78af-4eb2-bb64-9cd1d292b87b\nstatus: test\ndescription: Detects suspicious connections from Microsoft Sync Center to non-private IPs.\nreferences:\n    - https://redcanary.com/blog/intelligence-insights-november-2021/\nauthor: elhoim\ndate: 2022-04-28\nmodified: 2024-03-12\ntags:\n    - attack.privilege-escalation\n    - attack.stealth\n    - attack.t1055\n    - attack.t1218\n    - attack.execution\nlogsource:\n    product: windows\n    category: network_connection\ndetection:\n    selection:\n        Image|endswith: '\\mobsync.exe'\n    filter_main_local_ranges:\n        DestinationIp|cidr:\n            - '127.0.0.0/8'\n            - '10.0.0.0/8'\n            - '172.16.0.0/12'\n            - '192.168.0.0/16'\n            - '169.254.0.0/16'\n            - '::1/128'  # IPv6 loopback\n            - 'fe80::/10'  # IPv6 link-local addresses\n            - 'fc00::/7'  # IPv6 private addresses\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/T1055","id":"T1055","name":"Process Injection","page":"techniques/enterprise/T1055/"},{"key":"enterprise/T1218","id":"T1218","name":"System Binary Proxy Execution","page":"techniques/enterprise/T1218/"}],"data_path":"data/detection-rules/9f2cc74d-78af-4eb2-bb64-9cd1d292b87b.json","kind":"sigma"}