Query: detection rule: Detects the occurrence of numerous space characters in RunMRU registry paths, which may indicate execution via phishing
Matching passage: Sigma rule: Detects the occurrence of numerous space characters in RunMRU registry paths, which may indicate execution via phishing. Logsource: windows / registry_set. Rule: title: Suspicious Space Characters in RunMRU Registry Path - ClickFix id: 7a1b4c5e-8f3d-4b9a-7c2e-1f4a5b8c6d9e related: - id: 3ae9974a-eb09-4044-8e70-8980a50c12c8 type: similar status: experimental description: 'Detects the occurrence of numerous space characters in RunMRU registry paths, which may indicate execution via phishing lures using clickfix techniques to hide malicious commands in the Windows Run dialog box from naked eyes. ' references: - https://expel.com/blog/cache-smuggling-when-a-picture-isnt-a-thousand-words/ - https://github.com/JohnHammond/recaptcha-phish author: Swachchhanda Shrawan Poudel (Nextron Systems) date: 2025-11-04 tags: - attack.execution - attack.stealth - attack.t1204.004 - attack.t1027.010 logsource: category: registry_set product: windows detection: selection_key: TargetObject|contains: \Software\Microsoft\Windows\CurrentVersion\Explorer\RunMRU\ Details|contains: '#' selection_space_variation: Details|contains: - - - - - - - - - - - - - ' ' condition: all of selection_* falsepositives: - Unlikely level: high
Near-miss passage: Sigma rule: Detects when adversaries stop services or processes by disabling their respective scheduled tasks in order to conduct da. Logsource: windows / process_creation. Rule: title: Disable Important Scheduled Task id: 9ac94dc8-9042-493c-ba45-3b5e7c86b980 related: - id: 7595ba94-cf3b-4471-aa03-4f6baa9e5fad type: similar - id: 9e3cb244-bdb8-4632-8c90-6079c8f4f16d type: similar status: test description: Detects when adversaries stop services or processes by disabling their respective scheduled tasks in order to conduct data destructive activities references: - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1490/T1490.md#atomic-test-8---windows---disable-the-sr-scheduled-task - https://twitter.com/MichalKoczwara/status/1553634816016498688 - https://thedfirreport.com/2021/10/18/icedid-to-xinglocker-ransomware-in-24-hours/ author: frack113, Nasreddine Bencherchali (Nextron Systems), X__Junior date: 2021-12-26 modified: 2026-03-11 tags: - attack.impact - attack.t1489 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: \schtasks.exe - OriginalFileName: schtasks.exe selection_cli_disable: CommandLine|contains|windash: /disable selection_cli_task: CommandLine|contains: - \Windows\BitLocker - \Windows\ExploitGuard - \Windows\ExploitGuard\ExploitGuard MDM policy Refresh - \Windows\SystemRestore\SR - \Windows\UpdateOrchestrator\ - \Windows\Windows Defender\ - \Windows\WindowsBackup\ - \Windows\WindowsUpdate\ condition: all of selection_* falsepositives: - Unknown level: high regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_schtasks_disable/info.yml simulation: - type: atomic-red-team name: Windows - Disable the SR scheduled task technique: T1490 atomic_guid: 1c68c68d-83a4-4981-974e-8993055fa034