{"id":"7b434893-c57d-4f41-908d-6a17bf1ae98f","title":"Network Connection Initiated From Process Located In Potentially Suspicious Or Uncommon Location","description":"Detects a network connection initiated by programs or processes running from suspicious or uncommon files system locations.\n","author":"Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"high","date":"2017-03-19","modified":"2026-03-29","tags":["attack.command-and-control","attack.t1105"],"technique_ids":["T1105"],"logsource":{"category":"network_connection","product":"windows"},"falsepositives":["Unknown"],"references":["https://docs.google.com/spreadsheets/d/17pSTDNpa0sf6pHeRhusvWG6rThciE8CsXTSlDUAZDyo"],"source_path":"rules/windows/network_connection/net_connection_win_susp_initiated_uncommon_or_suspicious_locations.yml","source_sha256":"cc1c4a10ed76c9a348ca6027732313f684e9e392dffb77636eed60c2183d3a93","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/network_connection/net_connection_win_susp_initiated_uncommon_or_suspicious_locations.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Network Connection Initiated From Process Located In Potentially Suspicious Or Uncommon Location\nid: 7b434893-c57d-4f41-908d-6a17bf1ae98f\nrelated:\n    - id: 8b48ad89-10d8-4382-a546-50588c410f0d\n      type: similar\n    - id: d635249d-86b5-4dad-a8c7-d7272b788586\n      type: similar\n    - id: 52182dfb-afb7-41db-b4bc-5336cb29b464\n      type: similar\n    - id: ae02ed70-11aa-4a22-b397-c0d0e8f6ea99\n      type: similar\n    - id: e0f8ab85-0ac9-423b-a73a-81b3c7b1aa97\n      type: similar\n    - id: 8518ed3d-f7c9-4601-a26c-f361a4256a0c\n      type: similar\n    - id: 42a5f1e7-9603-4f6d-97ae-3f37d130d794\n      type: similar\n    - id: 56454143-524f-49fb-b1c6-3fb8b1ad41fb\n      type: similar\n    - id: b6e04788-29e1-4557-bb14-77f761848ab8\n      type: similar\n    - id: a0d7e4d2-bede-4141-8896-bc6e237e977c\n      type: similar\n    - id: 297ae038-edc2-4b2e-bb3e-7c5fc94dd5c7\n      type: similar\nstatus: test\ndescription: |\n    Detects a network connection initiated by programs or processes running from suspicious or uncommon files system locations.\nreferences:\n    - https://docs.google.com/spreadsheets/d/17pSTDNpa0sf6pHeRhusvWG6rThciE8CsXTSlDUAZDyo\nauthor: Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)\ndate: 2017-03-19\nmodified: 2026-03-29\ntags:\n    - attack.command-and-control\n    - attack.t1105\nlogsource:\n    category: network_connection\n    product: windows\ndetection:\n    selection:\n        Initiated: 'true'\n        Image|contains:\n            - ':\\$Recycle.bin'\n            - ':\\Perflogs\\'\n            - ':\\Temp\\'\n            - ':\\Users\\Default\\'\n            - ':\\Users\\Public\\'\n            - ':\\Windows\\Fonts\\'\n            - ':\\Windows\\IME\\'\n            - ':\\Windows\\System32\\Tasks\\'\n            - ':\\Windows\\Tasks\\'\n            - '\\config\\systemprofile\\'\n            - '\\Contacts\\'\n            - '\\Favorites\\'\n            - '\\Favourites\\'\n            - '\\Music\\'\n            - '\\Pictures\\'\n            - '\\Videos\\'\n            - '\\Windows\\addins\\'\n    filter_main_domains:\n        # Note: We exclude these domains to avoid duplicate filtering from e0f8ab85-0ac9-423b-a73a-81b3c7b1aa97\n        DestinationHostname|endswith:\n            - '.githubusercontent.com'       # Includes both gists and github repositories / Michael Haag (idea)\n            - '0x0.st'\n            - 'anonfiles.com'\n            - 'bashupload.com'\n            - 'cdn.discordapp.com'\n            - 'chunk.io'\n            - 'ddns.net'\n            - 'dl.dropboxusercontent.com'\n            - 'ghostbin.co'\n            - 'github.com'\n            - 'glitch.me'\n            - 'gofile.io'\n            - 'hastebin.com'\n            - 'mediafire.com'\n            - 'mega.co.nz'\n            - 'mega.nz'\n            - 'onrender.com'\n            - 'pages.dev'\n            - 'paste.ee'\n            - 'pastebin.com'\n            - 'pastebin.pl'\n            - 'pastetext.net'\n            - 'portmap.io'  # https://pro.twitter.com/JaromirHorejsi/status/1795001037746761892/photo/2\n            - 'privatlab.com'\n            - 'privatlab.net'\n            - 'send.exploit.in'\n            - 'sendspace.com'\n            - 'storage.googleapis.com'\n            - 'storjshare.io'\n            - 'supabase.co'\n            - 'temp.sh'\n            - 'transfer.sh'\n            - 'trycloudflare.com'\n            - 'ufile.io'\n            - 'w3spaces.com'\n            - 'workers.dev'\n            - 'x0.at'\n    condition: selection and not 1 of filter_main_*\nfalsepositives:\n    - Unknown\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1105","id":"T1105","name":"Ingress Tool Transfer","page":"techniques/enterprise/T1105/"}],"data_path":"data/detection-rules/7b434893-c57d-4f41-908d-6a17bf1ae98f.json","kind":"sigma"}