diff --git a/rules/windows/process_creation/proc_creation_win_susp_clickfix_execution.yml b/rules/windows/process_creation/proc_creation_win_susp_clickfix_execution.yml new file mode 100644 index 00000000000..fd941444091 --- /dev/null +++ b/rules/windows/process_creation/proc_creation_win_susp_clickfix_execution.yml @@ -0,0 +1,33 @@ +title: ClickFix Execution Pattern +id: d487ed4a-fd24-436d-a0b2-f4e95f7b2635 +status: experimental +description: | + Detects potential ClickFix execution patterns leveraging social engineering techniques where users are tricked into running malicious commands via clipboard manipulation. + This attack starts with users visiting malicious websites, often impersonating legitimate news or service platforms. + These websites display fake CAPTCHA challenges labeled as "I am not a robot - reCAPTCHA Verification," instructing users to press Windows + R, paste clipboard contents into the Run dialog, and execute the command. + The clipboard content typically contains mshta.exe or powershell.exe commands that download and execute malware, such as Lumma Stealer or other information stealers. + This technique exploits user trust and bypasses traditional malware defenses by relying on user interaction. +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 +author: montysecurity, Swachchhanda Shrawan Poudel(Nextron Systems) +date: 2025-03-04 +tags: + - attack.execution + - attack.t1204.001 +logsource: + category: process_creation + product: windows +detection: + selection: + ParentImage|endswith: '\explorer.exe' + CommandLine|contains: + - 'I am not a robot - reCAPTCHA Verification' + - 'Verify you are human - Ray Verification ID:' + condition: selection +falsepositives: + - Unlikely +level: high