Query: detect Detects the execution of renamed schtasks.exe binary, which is a legitimate Windows utility used for scheduling tasks. O in logs
Matching passage: Sigma rule: Detects the execution of renamed schtasks.exe binary, which is a legitimate Windows utility used for scheduling tasks. O. Logsource: windows / process_creation. Rule: title: Renamed Schtasks Execution id: f91e51c9-f344-4b32-969b-0b6f6b8537d4 status: experimental description: 'Detects the execution of renamed schtasks.exe binary, which is a legitimate Windows utility used for scheduling tasks. One of the very common persistence techniques is schedule malicious tasks using schtasks.exe. Since, it is heavily abused, it is also heavily monitored by security products. To evade detection, threat actors may rename the schtasks.exe binary to schedule their malicious tasks. ' references: - https://x.com/JangPr0/status/1932034543026065833 - https://ss64.com/nt/schtasks.html author: Swachchhanda Shrawan Poudel (Nextron Systems) date: 2025-11-27 tags: - attack.execution - attack.persistence - attack.privilege-escalation - attack.stealth - attack.t1036.003 - attack.t1053.005 logsource: category: process_creation product: windows detection: selection_cmd_operation: CommandLine|contains|windash: - ' /create ' - ' /delete ' - ' /query ' - ' /change ' - ' /run ' - ' /end ' selection_cmd_flags: CommandLine|contains|windash: - ' /tn ' - ' /tr ' - ' /sc ' - ' /st ' - ' /ru ' - ' /fo ' selection_pe: OriginalFileName: schtasks.exe filter_main_cmd: CommandLine|contains: schtasks filter_main_img: Image|endswith: \schtasks.exe condition: (all of selection_cmd_* and not filter_main_cmd) or (selection_pe and not filter_main_img) falsepositives: - Unlikely level: high
Near-miss passage: Sigma rule: Detects potential DLL sideloading of "goopdate.dll", a DLL used by googleupdate.exe. Logsource: windows / image_load. Rule: title: Potential Goopdate.DLL Sideloading id: b6188d2f-b3c4-4d2c-a17d-9706e0851af0 status: test description: Detects potential DLL sideloading of "goopdate.dll", a DLL used by googleupdate.exe references: - https://www.ncsc.gov.uk/static-assets/documents/malware-analysis-reports/goofy-guineapig/NCSC-MAR-Goofy-Guineapig.pdf author: X__Junior (Nextron Systems), Nasreddine Bencherchali (Nextron Systems) date: 2023-05-15 modified: 2025-10-07 tags: - attack.persistence - attack.privilege-escalation - attack.execution - attack.stealth - attack.t1574.001 logsource: category: image_load product: windows detection: selection: ImageLoaded|endswith: \goopdate.dll filter_main_generic: ImageLoaded|startswith: - C:\Program Files (x86)\ - C:\Program Files\ filter_optional_dropbox_installer_temp: Image|contains|all: - \AppData\Local\Temp\GUM - .tmp\Dropbox ImageLoaded|contains|all: - \AppData\Local\Temp\GUM - .tmp\goopdate.dll filter_optional_googleupdate_temp: Image|contains: - \AppData\Local\Temp\GUM - :\Windows\SystemTemp\GUM Image|endswith: .tmp\GoogleUpdate.exe ImageLoaded|contains: - \AppData\Local\Temp\GUM - :\Windows\SystemTemp\GUM condition: selection and not 1 of filter_main_* and not 1 of filter_optional_* falsepositives: - False positives are expected from Google Chrome installations running from user locations (AppData) and other custom locations. Apply additional filters accordingly. - Other third party chromium browsers located in AppData level: medium