Query: write Sigma for Detects a highly relevant Antivirus alert that reports password dumpers and stealers. This event must not be ignored jus
Matching passage: Sigma rule: Detects a highly relevant Antivirus alert that reports password dumpers and stealers. This event must not be ignored jus. Logsource: antivirus. Rule: title: Antivirus - Password Dumper Signature id: 78cc2dd2-7d20-4d32-93ff-057084c38b93 status: stable description: 'Detects a highly relevant Antivirus alert that reports password dumpers and stealers. This event must not be ignored just because the AV has blocked the malware but investigate, how it came there in the first place and check if passwords need to be reset. ' references: - https://www.nextron-systems.com/?s=antivirus - https://www.virustotal.com/gui/file/5fcda49ee7f202559a6cbbb34edb65c33c9a1e0bde9fa2af06a6f11b55ded619 - https://www.virustotal.com/gui/file/a4edfbd42595d5bddb442c82a02cf0aaa10893c1bf79ea08b9ce576f82749448 author: Florian Roth (Nextron Systems), Arnim Rupp date: 2018-09-09 modified: 2026-06-15 tags: - attack.credential-access - attack.t1003 - attack.t1558 - attack.t1003.001 - attack.t1003.002 logsource: category: antivirus detection: selection: - Signature|startswith: PWS - Signature|contains: - Certify - DCSync - Creddump - DumpCreds - DumpLsass - DumpPert - FormBook - HTool/WCE - Kekeo - Lazagne - LsassDump - Lummast - Mimikatz - MultiDump - Multiverze - Nanodump - NativeDump - Outflank - PShlSpy - PSWTool - PWCrack - PWDump - PWS. - PWSX - pypykatz - Rubeus - SafetyKatz - SecurityTool - SharpChrome - SharpDPAPI - SharpDump - SharpKatz - SharpS. - ShpKatz - Steal - TrickDump - wsass condition: selection falsepositives: - Unlikely level: critical
Near-miss passage: Sigma rule: Detects potential ClickFix malware execution patterns by monitoring registry modifications in RunMRU keys containing HTT. Logsource: windows / registry_set. Rule: title: Potential ClickFix Execution Pattern - Registry id: f5fe36cf-f1ec-4c23-903d-09a3110f6bbb related: - id: d487ed4a-fd24-436d-a0b2-f4e95f7b2635 type: similar status: experimental description: 'Detects potential ClickFix malware execution patterns by monitoring registry modifications in RunMRU keys containing HTTP/HTTPS links. ClickFix is known to be distributed through phishing campaigns and uses techniques like clipboard hijacking and fake CAPTCHA pages. Through the fakecaptcha pages, the adversary tricks users into opening the Run dialog box and pasting clipboard-hijacked content, such as one-liners that execute remotely hosted malicious files or scripts. ' 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://medium.com/@boutnaru/the-windows-foreniscs-journey-run-mru-run-dialog-box-most-recently-used-57375a02d724 - https://unit42.paloaltonetworks.com/preventing-clickfix-attack-vector/ - https://medium.com/@poudelswachchhanda123/preventing-lnk-and-fakecaptcha-threats-a-system-hardening-approach-2f7b7ed2e493 - https://www.scpx.com.au/2025/11/16/decades-old-finger-protocol-abused-in-clickfix-malware-attacks/ author: Swachchhanda Shrawan Poudel (Nextron Systems) date: 2025-03-25 modified: 2025-11-19 tags: - attack.execution - attack.t1204.001 logsource: category: registry_set product: windows detection: selection_registry: TargetObject|contains: \SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\RunMRU\ selection_details: Details|contains: - http:// - https:// selection_susp_pattern: - Details|contains: - account - anti-bot - botcheck - captcha - challenge - confirmation - fraud - human - identification - identificator - identity - robot - validation - verification - verify - Details|contains: - '%comspec%' - bitsadmin - certutil - cmd - cscript - curl - finger - mshta - powershell - pwsh - regsvr32 - rundll32 - schtasks - wget - wscript condition: all of selection_* falsepositives: - Legitimate applications using RunMRU with HTTP links level: high