Query: detection rule: Detects potential abuse of Active Directory Replication Service (ADRS) from a non machine account to request credentials
Matching passage: Sigma rule: Detects potential abuse of Active Directory Replication Service (ADRS) from a non machine account to request credentials. Logsource: windows / security. Rule: title: Active Directory Replication from Non Machine Account - DcSync Indicator id: 17d619c1-e020-4347-957e-1d1207455c93 related: - id: 611eab06-a145-4dfa-a295-3ccc5c20f59a type: similar status: test description: Detects potential abuse of Active Directory Replication Service (ADRS) from a non machine account to request credentials. references: - https://threathunterplaybook.com/hunts/windows/180815-ADObjectAccessReplication/notebook.html - https://threathunterplaybook.com/library/windows/active_directory_replication.html - https://threathunterplaybook.com/hunts/windows/190101-ADModDirectoryReplication/notebook.html author: Roberto Rodriguez @Cyb3rWard0g date: 2019-07-26 modified: 2026-07-30 tags: - attack.credential-access - attack.t1003.006 logsource: product: windows service: security definition: 'Requirements: A SACL must be configured on the domain NC root object (e.g. DC=domain,DC=com) to generate Event 4662. Add via ADSI Edit: navigate to the domain NC root → Properties → Security → Advanced → Auditing → add an ACE for Everyone, Type: Success, Applies to: This object only, rights: DS-Replication-Get-Changes and DS-Replication-Get-Changes-All. The OS audit subcategory must also be enabled: auditpol /set /subcategory:"Directory Service Access" /success:enable ' detection: selection: EventID: 4662 Properties|contains: - 1131f6ad-9c07-11d1-f79f-00c04fc2dcd2 - 1131f6aa-9c07-11d1-f79f-00c04fc2dcd2 - 9923a32a-3607-11d2-b9be-0000f87a36b2 - 89e95b76-444d-4c62-991a-0facbeda640c filter_main_machine_accounts: SubjectUserName|endswith: $ filter_optional_subject_domain: SubjectDomainName: Window Manager filter_optional_subject_usersid: SubjectUserName|startswith: - NT AUT - MSOL_ condition: selection and not 1 of filter_main_* and not 1 of filter_optional_* falsepositives: - Unknown level: medium
Near-miss passage: Sigma rule: Detects execution of chromium based browser in headless mode using the "dump-dom" command line to download files. Logsource: windows / process_creation. Rule: title: File Download with Headless Browser id: 0e8cfe08-02c9-4815-a2f8-0d157b7ed33e related: - id: ef9dcfed-690c-4c5d-a9d1-482cd422225c type: derived status: test description: Detects execution of chromium based browser in headless mode using the "dump-dom" command line to download files references: - https://twitter.com/mrd0x/status/1478234484881436672?s=12 - https://www.trendmicro.com/en_us/research/23/e/managed-xdr-investigation-of-ducktail-in-trend-micro-vision-one.html author: Sreeman, Florian Roth (Nextron Systems) date: 2022-01-04 modified: 2025-10-07 tags: - attack.command-and-control - attack.stealth - attack.t1105 - attack.t1564.003 logsource: category: process_creation product: windows detection: selection: Image|endswith: - \brave.exe - \chrome.exe - \msedge.exe - \opera.exe - \vivaldi.exe CommandLine|contains|all: - --headless - dump-dom - http filter_optional_edge_1: Image|startswith: - C:\Program Files (x86)\Microsoft\Edge\Application\ - C:\Program Files (x86)\Microsoft\EdgeCore\ - C:\Program Files (x86)\Microsoft\EdgeWebView\ - C:\Program Files\Microsoft\Edge\Application\ - C:\Program Files\Microsoft\EdgeCore\ - C:\Program Files\Microsoft\EdgeWebView\ - C:\Program Files\WindowsApps\Microsoft.MicrosoftEdge Image|endswith: - \msedge.exe - \msedgewebview2.exe - \MicrosoftEdge.exe CommandLine|contains: --headless --disable-gpu --disable-extensions --disable-plugins --mute-audio --no-first-run --incognito --aggressive-cache-discard --dump-dom filter_optional_edge_2: Image|contains: - \AppData\Local\Microsoft\WindowsApps\ - \Windows\SystemApps\Microsoft.MicrosoftEdge Image|endswith: - \msedge.exe - \MicrosoftEdge.exe CommandLine|contains: --headless --disable-gpu --disable-extensions --disable-plugins --mute-audio --no-first-run --incognito --aggressive-cache-discard --dump-dom condition: selection and not 1 of filter_optional_* falsepositives: - Unknown level: high regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_browsers_chromium_headless_file_download/info.yml