{"id":"4d07b1f4-cb00-4470-b9f8-b0191d48ff52","title":"DNS Query To Remote Access Software Domain From Non-Browser App","description":"An adversary may use legitimate desktop support and remote access software, such as Team Viewer, Go2Assist, LogMein, AmmyyAdmin, etc, to establish an interactive command and control channel to target systems within networks.\nThese services are commonly used as legitimate technical support software, and may be allowed by application control within a target environment.\nRemote access tools like VNC, Ammyy, and Teamviewer are used frequently when compared with other legitimate software commonly used by adversaries. (Citation: Symantec Living off the Land)\n","author":"frack113, Connor Martin","status":"test","level":"medium","date":"2022-07-11","modified":"2024-12-17","tags":["attack.command-and-control","attack.t1219.002"],"technique_ids":["T1219.002"],"logsource":{"product":"windows","category":"dns_query"},"falsepositives":["Likely with other browser software. Apply additional filters for any other browsers you might use."],"references":["https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1219/T1219.md#atomic-test-4---gotoassist-files-detected-test-on-windows","https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1219/T1219.md#atomic-test-3---logmein-files-detected-test-on-windows","https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1219/T1219.md#atomic-test-6---ammyy-admin-software-execution","https://redcanary.com/blog/misbehaving-rats/","https://techcommunity.microsoft.com/t5/microsoft-sentinel-blog/hunting-for-omi-vulnerability-exploitation-with-azure-sentinel/ba-p/2764093","https://www.cisa.gov/news-events/cybersecurity-advisories/aa23-320a","https://blog.sekoia.io/scattered-spider-laying-new-eggs/","https://learn.microsoft.com/en-us/windows/client-management/client-tools/quick-assist#disable-quick-assist-within-your-organization"],"source_path":"rules/windows/dns_query/dns_query_win_remote_access_software_domains_non_browsers.yml","source_sha256":"0a2bc0b0eb482e1dfa53ded23a543eeae9924a6a9a25bd1498f32ca94f350762","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/dns_query/dns_query_win_remote_access_software_domains_non_browsers.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 To Remote Access Software Domain From Non-Browser App\nid: 4d07b1f4-cb00-4470-b9f8-b0191d48ff52\nrelated:\n    - id: 71ba22cb-8a01-42e2-a6dd-5bf9b547498f\n      type: obsolete\n    - id: 7c4cf8e0-1362-48b2-a512-b606d2065d7d\n      type: obsolete\n    - id: ed785237-70fa-46f3-83b6-d264d1dc6eb4\n      type: obsolete\nstatus: test\ndescription: |\n    An adversary may use legitimate desktop support and remote access software, such as Team Viewer, Go2Assist, LogMein, AmmyyAdmin, etc, to establish an interactive command and control channel to target systems within networks.\n    These services are commonly used as legitimate technical support software, and may be allowed by application control within a target environment.\n    Remote access tools like VNC, Ammyy, and Teamviewer are used frequently when compared with other legitimate software commonly used by adversaries. (Citation: Symantec Living off the Land)\nreferences:\n    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1219/T1219.md#atomic-test-4---gotoassist-files-detected-test-on-windows\n    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1219/T1219.md#atomic-test-3---logmein-files-detected-test-on-windows\n    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1219/T1219.md#atomic-test-6---ammyy-admin-software-execution\n    - https://redcanary.com/blog/misbehaving-rats/\n    - https://techcommunity.microsoft.com/t5/microsoft-sentinel-blog/hunting-for-omi-vulnerability-exploitation-with-azure-sentinel/ba-p/2764093\n    - https://www.cisa.gov/news-events/cybersecurity-advisories/aa23-320a\n    - https://blog.sekoia.io/scattered-spider-laying-new-eggs/\n    - https://learn.microsoft.com/en-us/windows/client-management/client-tools/quick-assist#disable-quick-assist-within-your-organization\nauthor: frack113, Connor Martin\ndate: 2022-07-11\nmodified: 2024-12-17\ntags:\n    - attack.command-and-control\n    - attack.t1219.002\nlogsource:\n    product: windows\n    category: dns_query\ndetection:\n    selection_generic:\n        QueryName|endswith:\n            - 'agent.jumpcloud.com'\n            - 'agentreporting.atera.com'\n            - 'ammyy.com'\n            - 'api.parsec.app'\n            - 'api.playanext.com'\n            - 'api.splashtop.com'\n            - 'app.atera.com'\n            - 'assist.zoho.com'\n            - 'authentication.logmeininc.com'\n            - 'beyondtrustcloud.com'\n            - 'cdn.kaseya.net'\n            - 'client.teamviewer.com'\n            - 'comserver.corporate.beanywhere.com'\n            - 'control.connectwise.com'\n            - 'downloads.zohocdn.com'\n            - 'dwservice.net'\n            - 'express.gotoassist.com'\n            - 'getgo.com'\n            - 'getscreen.me'  # https://x.com/malmoeb/status/1868757130624614860?s=12&t=C0_T_re0wRP_NfKa27Xw9w\n            - 'integratedchat.teamviewer.com'\n            - 'join.zoho.com'\n            - 'kickstart.jumpcloud.com'\n            - 'license.bomgar.com'\n            - 'logmein-gateway.com'\n            - 'logmein.com'\n            - 'logmeincdn.http.internapcdn.net'\n            - 'n-able.com'\n            - 'net.anydesk.com'\n            - 'netsupportsoftware.com' # For NetSupport Manager RAT\n            - 'parsecusercontent.com'\n            - 'pubsub.atera.com'\n            - 'relay.kaseya.net'\n            - 'relay.screenconnect.com'\n            - 'relay.splashtop.com'\n            - 'remoteassistance.support.services.microsoft.com' # Quick Assist Application\n            - 'remotedesktop-pa.googleapis.com'\n            - 'remoteutilities.com' # Usage of Remote Utilities RAT\n            - 'secure.logmeinrescue.com'\n            - 'services.vnc.com'\n            - 'static.remotepc.com'\n            - 'swi-rc.com'\n            - 'swi-tc.com'\n            - 'tailscale.com' # Scattered Spider threat group used this RMM tool\n            - 'telemetry.servers.qetqo.com'\n            - 'tmate.io'\n            - 'twingate.com'  # Scattered Spider threat group used this RMM tool\n            - 'zohoassist.com'\n    selection_rustdesk:  # https://twitter.com/malmoeb/status/1668504345132822531?s=20 and https://www.adamsdesk.com/posts/rustdesk-not-connecting/ mention this pattern\n        QueryName|endswith: '.rustdesk.com'\n        QueryName|startswith: 'rs-'\n    # Exclude browsers for legitimate visits of the domains mentioned above\n    # Add missing browsers you use and exclude the ones you don't\n    filter_optional_chrome:\n        Image:\n            - 'C:\\Program Files\\Google\\Chrome\\Application\\chrome.exe'\n            - 'C:\\Program Files (x86)\\Google\\Chrome\\Application\\chrome.exe'\n    filter_optional_firefox:\n        Image:\n            - 'C:\\Program Files\\Mozilla Firefox\\firefox.exe'\n            - 'C:\\Program Files (x86)\\Mozilla Firefox\\firefox.exe'\n    filter_optional_ie:\n        Image:\n            - 'C:\\Program Files (x86)\\Internet Explorer\\iexplore.exe'\n            - 'C:\\Program Files\\Internet Explorer\\iexplore.exe'\n    filter_optional_edge_1:\n        - Image|startswith: 'C:\\Program Files (x86)\\Microsoft\\EdgeWebView\\Application\\'\n        - Image|endswith: '\\WindowsApps\\MicrosoftEdge.exe'\n        - Image:\n              - 'C:\\Program Files (x86)\\Microsoft\\Edge\\Application\\msedge.exe'\n              - 'C:\\Program Files\\Microsoft\\Edge\\Application\\msedge.exe'\n    filter_optional_edge_2:\n        Image|startswith:\n            - 'C:\\Program Files (x86)\\Microsoft\\EdgeCore\\'\n            - 'C:\\Program Files\\Microsoft\\EdgeCore\\'\n        Image|endswith:\n            - '\\msedge.exe'\n            - '\\msedgewebview2.exe'\n    filter_optional_safari:\n        Image|endswith: '\\safari.exe'\n    filter_optional_defender:\n        Image|endswith:\n            - '\\MsMpEng.exe' # Microsoft Defender executable\n            - '\\MsSense.exe' # Windows Defender Advanced Threat Protection Service Executable\n    filter_optional_brave:\n        Image|endswith: '\\brave.exe'\n        Image|startswith: 'C:\\Program Files\\BraveSoftware\\'\n    filter_optional_maxthon:\n        Image|contains: '\\AppData\\Local\\Maxthon\\'\n        Image|endswith: '\\maxthon.exe'\n    filter_optional_opera:\n        Image|contains: '\\AppData\\Local\\Programs\\Opera\\'\n        Image|endswith: '\\opera.exe'\n    filter_optional_seamonkey:\n        Image|startswith:\n            - 'C:\\Program Files\\SeaMonkey\\'\n            - 'C:\\Program Files (x86)\\SeaMonkey\\'\n        Image|endswith: '\\seamonkey.exe'\n    filter_optional_vivaldi:\n        Image|contains: '\\AppData\\Local\\Vivaldi\\'\n        Image|endswith: '\\vivaldi.exe'\n    filter_optional_whale:\n        Image|startswith:\n            - 'C:\\Program Files\\Naver\\Naver Whale\\'\n            - 'C:\\Program Files (x86)\\Naver\\Naver Whale\\'\n        Image|endswith: '\\whale.exe'\n    filter_optional_tor:\n        Image|contains: '\\Tor Browser\\'\n    filter_optional_whaterfox:\n        Image|startswith:\n            - 'C:\\Program Files\\Waterfox\\'\n            - 'C:\\Program Files (x86)\\Waterfox\\'\n        Image|endswith: '\\Waterfox.exe'\n    filter_optional_midori:\n        Image|contains: '\\AppData\\Local\\Programs\\midori-ng\\'\n        Image|endswith: '\\Midori Next Generation.exe'\n    filter_optional_slimbrowser:\n        Image|startswith:\n            - 'C:\\Program Files\\SlimBrowser\\'\n            - 'C:\\Program Files (x86)\\SlimBrowser\\'\n        Image|endswith: '\\slimbrowser.exe'\n    filter_optional_flock:\n        Image|contains: '\\AppData\\Local\\Flock\\'\n        Image|endswith: '\\Flock.exe'\n    filter_optional_phoebe:\n        Image|contains: '\\AppData\\Local\\Phoebe\\'\n        Image|endswith: '\\Phoebe.exe'\n    filter_optional_falkon:\n        Image|startswith:\n            - 'C:\\Program Files\\Falkon\\'\n            - 'C:\\Program Files (x86)\\Falkon\\'\n        Image|endswith: '\\falkon.exe'\n    filter_optional_avant:\n        Image|startswith:\n            - 'C:\\Program Files (x86)\\Avant Browser\\'\n            - 'C:\\Program Files\\Avant Browser\\'\n        Image|endswith: '\\avant.exe'\n    condition: 1 of selection_* and not 1 of filter_optional_*\nfalsepositives:\n    - Likely with other browser software. Apply additional filters for any other browsers you might use.\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1219.002","id":"T1219.002","name":"Remote Desktop Software","page":"techniques/enterprise/T1219.002/"}],"data_path":"data/detection-rules/4d07b1f4-cb00-4470-b9f8-b0191d48ff52.json","kind":"sigma"}