Query: Sigma rule for Detects the configuration of a new ISATAP router on a Windows host. While ISATAP is a legitimate Microsoft technology fo
Matching passage: Sigma rule: Detects the configuration of a new ISATAP router on a Windows host. While ISATAP is a legitimate Microsoft technology fo. Logsource: windows / system. Rule: title: ISATAP Router Address Was Set id: d22df9cd-2aee-4089-93c7-9dc4eae77f2c status: experimental description: 'Detects the configuration of a new ISATAP router on a Windows host. While ISATAP is a legitimate Microsoft technology for IPv6 transition, unexpected or unauthorized ISATAP router configurations could indicate a potential IPv6 DNS Takeover attack using tools like mitm6. In such attacks, adversaries advertise themselves as DHCPv6 servers and set malicious ISATAP routers to intercept traffic. This detection should be correlated with network baselines and known legitimate ISATAP deployments in your environment. ' references: - https://www.blackhillsinfosec.com/mitm6-strikes-again-the-dark-side-of-ipv6/ - https://redfoxsec.com/blog/ipv6-dns-takeover/ - https://www.securityhq.com/blog/malicious-isatap-tunneling-unearthed-on-windows-server/ - https://medium.com/@ninnesoturan/detecting-ipv6-dns-takeover-a54a6a88be1f author: hamid date: 2025-10-19 tags: - attack.impact - attack.credential-access - attack.collection - attack.initial-access - attack.privilege-escalation - attack.execution - attack.t1557 - attack.t1565.002 logsource: product: windows service: system detection: selection: EventID: 4100 Provider_Name: Microsoft-Windows-Iphlpsvc filter_main_localhost: IsatapRouter: - 127.0.0.1 - ::1 filter_optional_null: IsatapRouter: null condition: selection and not 1 of filter_main_* and not 1 of filter_optional_* falsepositives: - Legitimate ISATAP router configuration in enterprise environments - IPv6 transition projects and network infrastructure changes - Network administrators configuring dual-stack networking - Automatic ISATAP configuration in some Windows deployments level: medium
Near-miss passage: Sigma rule: Detects registry changes to Microsoft Office "AccessVBOM" to a value of "1" which disables trust access for VBA on the v. Logsource: windows / registry_set. Rule: title: Trust Access Disable For VBApplications id: 1a5c46e9-f32f-42f7-b2bc-6e9084db7fbf related: - id: 9b894e57-033f-46cf-b7fa-a52804181973 type: obsolete status: test description: Detects registry changes to Microsoft Office "AccessVBOM" to a value of "1" which disables trust access for VBA on the victim machine and lets attackers execute malicious macros without any Microsoft Office warnings. references: - https://twitter.com/inversecos/status/1494174785621819397 - https://www.mcafee.com/blogs/other-blogs/mcafee-labs/zloader-with-a-new-infection-technique/ - https://securelist.com/scarcruft-surveilling-north-korean-defectors-and-human-rights-activists/105074/ author: Trent Liffick (@tliffick), Nasreddine Bencherchali (Nextron Systems) date: 2020-05-22 modified: 2023-08-17 tags: - attack.persistence - attack.defense-impairment - attack.t1112 logsource: category: registry_set product: windows detection: selection: TargetObject|endswith: \Security\AccessVBOM Details: DWORD (0x00000001) condition: selection falsepositives: - Unlikely level: high