Query: rule covering Detects creation of the Process Explorer drivers by processes other than Process Explorer (procexp) itself. Hack tools o
Matching passage: Sigma rule: Detects creation of the Process Explorer drivers by processes other than Process Explorer (procexp) itself. Hack tools o. Logsource: windows / file_event. Rule: title: Process Explorer Driver Creation By Non-Sysinternals Binary id: de46c52b-0bf8-4936-a327-aace94f94ac6 status: test description: 'Detects creation of the Process Explorer drivers by processes other than Process Explorer (procexp) itself. Hack tools or malware may use the Process Explorer driver to elevate privileges, drops it to disk for a few moments, runs a service using that driver and removes it afterwards. ' references: - https://learn.microsoft.com/en-us/sysinternals/downloads/process-explorer - https://github.com/Yaxser/Backstab - https://www.elastic.co/security-labs/stopping-vulnerable-driver-attacks - https://news.sophos.com/en-us/2023/04/19/aukill-edr-killer-malware-abuses-process-explorer-driver/ author: Florian Roth (Nextron Systems) date: 2023-05-05 modified: 2026-06-29 tags: - attack.persistence - attack.privilege-escalation - attack.t1068 logsource: product: windows category: file_event detection: selection: TargetFilename|contains: \PROCEXP TargetFilename|endswith: .sys filter_main_process_explorer: Image|endswith: - \procexp.exe - \procexp64.exe - \procexp64a.exe condition: selection and not 1 of filter_main_* falsepositives: - Some false positives may occur with legitimate renamed process explorer binaries level: high
Near-miss passage: Sigma rule: Detects changes to Microsoft Office protected view registry keys with which the attacker disables this feature.. Logsource: windows / registry_set. Rule: title: Microsoft Office Protected View Disabled id: a5c7a43f-6009-4a8c-80c5-32abf1c53ecc related: - id: 7c637634-c95d-4bbf-b26c-a82510874b34 type: obsolete status: test description: Detects changes to Microsoft Office protected view registry keys with which the attacker disables this feature. references: - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md - https://unit42.paloaltonetworks.com/unit42-gorgon-group-slithering-nation-state-cybercrime/ - https://yoroi.company/research/cyber-criminal-espionage-operation-insists-on-italian-manufacturing/ - https://admx.help/HKCU/software/policies/microsoft/office/16.0/excel/security/protectedview author: frack113, Nasreddine Bencherchali (Nextron Systems) date: 2021-06-08 modified: 2023-08-17 tags: - attack.defense-impairment - attack.t1685 logsource: product: windows category: registry_set detection: selection_path: TargetObject|contains|all: - \SOFTWARE\Microsoft\Office\ - \Security\ProtectedView\ selection_values_1: Details: DWORD (0x00000001) TargetObject|endswith: - \DisableAttachementsInPV - \DisableInternetFilesInPV - \DisableIntranetCheck - \DisableUnsafeLocationsInPV selection_values_0: Details: DWORD (0x00000000) TargetObject|endswith: - \enabledatabasefileprotectedview - \enableforeigntextfileprotectedview condition: selection_path and 1 of selection_values_* falsepositives: - Unlikely level: high