Query: rule covering Detects potentially suspicious child processes of "regsvr32.exe".
Matching passage: Sigma rule: Detects potentially suspicious child processes of "regsvr32.exe".. Logsource: windows / process_creation. Rule: title: Potentially Suspicious Child Process Of Regsvr32 id: 6f0947a4-1c5e-4e0d-8ac7-53159b8f23ca related: - id: 8e2b24c9-4add-46a0-b4bb-0057b4e6187d type: obsolete status: test description: Detects potentially suspicious child processes of "regsvr32.exe". references: - https://redcanary.com/blog/intelligence-insights-april-2022/ - https://www.echotrail.io/insights/search/regsvr32.exe - https://www.ired.team/offensive-security/code-execution/t1117-regsvr32-aka-squiblydoo author: elhoim, Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems) date: 2022-05-05 modified: 2023-05-26 tags: - attack.stealth - attack.t1218.010 logsource: category: process_creation product: windows detection: selection: ParentImage|endswith: \regsvr32.exe Image|endswith: - \calc.exe - \cscript.exe - \explorer.exe - \mshta.exe - \net.exe - \net1.exe - \nltest.exe - \notepad.exe - \powershell.exe - \pwsh.exe - \reg.exe - \schtasks.exe - \werfault.exe - \wscript.exe filter_main_werfault: Image|endswith: \werfault.exe CommandLine|contains: ' -u -p ' condition: selection and not 1 of filter_main_* falsepositives: - Unlikely, but can rarely occur. Apply additional filters accordingly. level: high
Near-miss passage: Sigma rule: Detects suspicious execution patterns where users are tricked into running malicious commands via clipboard manipulation. Logsource: windows / process_creation. Rule: title: Suspicious ClickFix/FileFix Execution Pattern id: d487ed4a-fd24-436d-a0b2-f4e95f7b2635 related: - id: f5fe36cf-f1ec-4c23-903d-09a3110f6bbb type: similar status: experimental description: 'Detects suspicious execution patterns where users are tricked into running malicious commands via clipboard manipulation, either through the Windows Run dialog (ClickFix) or File Explorer address bar (FileFix). Attackers leverage social engineering campaigns—such as fake CAPTCHA challenges or urgent alerts—encouraging victims to paste clipboard contents, often executing mshta.exe, powershell.exe, or similar commands to infect systems. ' references: - https://github.com/JohnHammond/recaptcha-phish - https://www.zscaler.com/blogs/security-research/deepseek-lure-using-captchas-spread-malware - https://www.threatdown.com/blog/clipboard-hijacker-tries-to-install-a-trojan/ - https://app.any.run/tasks/5c16b4db-4b36-4039-a0ed-9b09abff8be2 - https://www.esentire.com/security-advisories/netsupport-rat-clickfix-distribution - https://www.scpx.com.au/2025/11/16/decades-old-finger-protocol-abused-in-clickfix-malware-attacks/ author: montysecurity, Swachchhanda Shrawan Poudel (Nextron Systems) date: 2025-11-19 tags: - attack.execution - attack.t1204.001 - attack.t1204.004 logsource: category: process_creation product: windows detection: selection_parent: ParentImage|endswith: \explorer.exe CommandLine|contains: '#' selection_cli_captcha: CommandLine|contains: - account - anti-bot - botcheck - captcha - challenge - confirmation - fraud - human - identification - identificator - identity - robot - validation - verification - verify condition: all of selection_* falsepositives: - Unlikely level: high