Query: rule covering Detects incoming connections to AnyDesk. This could indicate a potential remote attacker trying to connect to a listenin
Matching passage: Sigma rule: Detects incoming connections to AnyDesk. This could indicate a potential remote attacker trying to connect to a listenin. Logsource: windows / network_connection. Rule: title: Remote Access Tool - AnyDesk Incoming Connection id: d58ba5c6-0ed7-4b9d-a433-6878379efda9 status: experimental description: 'Detects incoming connections to AnyDesk. This could indicate a potential remote attacker trying to connect to a listening instance of AnyDesk and use it as potential command and control channel. ' references: - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1219/T1219.md#atomic-test-2---anydesk-files-detected-test-on-windows - https://asec.ahnlab.com/en/40263/ author: '@d4ns4n_ (Wuerth-Phoenix)' date: 2024-09-02 modified: 2025-02-24 tags: - attack.persistence - attack.command-and-control - attack.t1219.002 logsource: category: network_connection product: windows detection: selection: Image|endswith: - \AnyDesk.exe - \AnyDeskMSI.exe Initiated: 'false' condition: selection falsepositives: - Legitimate incoming connections (e.g. sysadmin activity). Most of the time I would expect outgoing connections (initiated locally). level: medium
Near-miss passage: Sigma rule: Detects changes to registry keys related to "Trusted Location" of Microsoft Office where the path is set to something un. Logsource: windows / registry_set. Rule: title: Uncommon Microsoft Office Trusted Location Added id: f742bde7-9528-42e5-bd82-84f51a8387d2 related: - id: a0bed973-45fa-4625-adb5-6ecdf9be70ac type: derived status: test description: Detects changes to registry keys related to "Trusted Location" of Microsoft Office where the path is set to something uncommon. Attackers might add additional trusted locations to avoid macro security restrictions. references: - Internal Research - https://admx.help/?Category=Office2016&Policy=excel16.Office.Microsoft.Policies.Windows::L_TrustedLoc01 author: Nasreddine Bencherchali (Nextron Systems) date: 2023-06-21 modified: 2023-09-29 tags: - attack.persistence - attack.defense-impairment - attack.t1112 logsource: category: registry_set product: windows detection: selection: TargetObject|contains: Security\Trusted Locations\Location TargetObject|endswith: \Path filter_exclude_known_paths: Details|contains: - '%APPDATA%\Microsoft\Templates' - '%%APPDATA%%\Microsoft\Templates' - '%APPDATA%\Microsoft\Word\Startup' - '%%APPDATA%%\Microsoft\Word\Startup' - :\Program Files (x86)\Microsoft Office\root\Templates\ - :\Program Files\Microsoft Office (x86)\Templates - :\Program Files\Microsoft Office\root\Templates\ - :\Program Files\Microsoft Office\Templates\ filter_main_office_click_to_run: Image|contains: :\Program Files\Common Files\Microsoft Shared\ClickToRun\ Image|endswith: \OfficeClickToRun.exe filter_main_office_apps: Image|contains: - :\Program Files\Microsoft Office\ - :\Program Files (x86)\Microsoft Office\ condition: selection and not 1 of filter_main_* and not 1 of filter_exclude_* falsepositives: - Other unknown legitimate or custom paths need to be filtered to avoid false positives level: high