Query: rule covering Detects tampering of AMSI (Anti-Malware Scan Interface) related registry values via command line tools such as reg.exe o
Matching passage: Sigma rule: Detects tampering of AMSI (Anti-Malware Scan Interface) related registry values via command line tools such as reg.exe o. Logsource: windows / process_creation. Rule: title: Windows AMSI Related Registry Tampering Via CommandLine id: 7dbbcac2-57a0-45ac-b306-ff30a8bd2981 related: - id: aa37cbb0-da36-42cb-a90f-fdf216fc7467 type: similar status: experimental description: 'Detects tampering of AMSI (Anti-Malware Scan Interface) related registry values via command line tools such as reg.exe or PowerShell. AMSI provides a generic interface for applications and services to integrate with antimalware products. Adversaries may disable AMSI to evade detection of malicious scripts and code execution. ' references: - https://github.com/arttoolkit/arttoolkit.github.io/blob/16d6230d009e58fd6f773f5317fd4d14c1f26004/_wadcoms/AMSI-Bypass-Jscript_amsienable.md - https://mostafayahiax.medium.com/hunting-for-amsi-bypassing-methods-9886dda0bf9d - https://www.mdsec.co.uk/2019/02/macros-and-more-with-sharpshooter-v2-0/ author: Swachchhanda Shrawan Poudel (Nextron Systems) date: 2025-12-25 tags: - attack.defense-impairment - attack.t1685 logsource: category: process_creation product: windows detection: selection_key: CommandLine|contains|all: - \Software\Microsoft\Windows Script\Settings - AmsiEnable selection_reg_img: - Image|endswith: \reg.exe - OriginalFileName: reg.exe selection_reg_cmd: CommandLine|contains: add selection_powershell_img: - Image|endswith: - \powershell.exe - \pwsh.exe - OriginalFileName: - PowerShell.EXE - pwsh.dll selection_powershell_cmd: CommandLine|contains: - Set-ItemProperty - New-ItemProperty - 'sp ' condition: selection_key and (all of selection_powershell_* or all of selection_reg_*) falsepositives: - Unknown level: high regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_amsi_registry_tampering/info.yml simulation: - type: atomic-red-team name: AMSI Bypass - Create AMSIEnable Reg Key technique: T1562.001 atomic_guid: 728eca7b-0444-4f6f-ac36-437e3d751dc0
Near-miss passage: Sigma rule: Detects remote RPC calls to read information about scheduled tasks via AtScv. Logsource: rpc_firewall / application. Rule: title: Remote Schedule Task Recon via AtScv id: f177f2bc-5f3e-4453-b599-57eefce9a59c status: test description: Detects remote RPC calls to read information about scheduled tasks via AtScv references: - https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-tsch/d1058a28-7e02-4948-8b8d-4a347fa64931 - https://github.com/zeronetworks/rpcfirewall - https://github.com/jsecurity101/MSRPC-to-ATTACK/blob/ddd4608fe8684fcf2fcf9b48c5f0b3c28097f8a3/documents/MS-TSCH.md - https://zeronetworks.com/blog/stopping-lateral-movement-via-the-rpc-firewall/ author: Sagie Dulce, Dekel Paz date: 2022-01-01 tags: - attack.discovery logsource: product: rpc_firewall category: application definition: 'Requirements: install and apply the RPC Firewall to all processes with "audit:true action:block uuid:1ff70682-0a51-30e8-076d-740be8cee98b"' detection: selection: EventLog: RPCFW EventID: 3 InterfaceUuid: 1ff70682-0a51-30e8-076d-740be8cee98b filter: OpNum: - 0 - 1 condition: selection and not filter falsepositives: - Unknown level: high