Query: detection rule: Detects uncommon child processes of "BgInfo.exe" which could be a sign of potential abuse of the binary to proxy executi
Matching passage: Sigma rule: Detects uncommon child processes of "BgInfo.exe" which could be a sign of potential abuse of the binary to proxy executi. Logsource: windows / process_creation. Rule: title: Uncommon Child Process Of BgInfo.EXE id: aaf46cdc-934e-4284-b329-34aa701e3771 related: - id: 811f459f-9231-45d4-959a-0266c6311987 type: similar status: test description: Detects uncommon child processes of "BgInfo.exe" which could be a sign of potential abuse of the binary to proxy execution via external VBScript references: - https://lolbas-project.github.io/lolbas/OtherMSBinaries/Bginfo/ - https://oddvar.moe/2017/05/18/bypassing-application-whitelisting-with-bginfo/ author: Nasreddine Bencherchali (Nextron Systems), Beyu Denis, oscd.community date: 2019-10-26 modified: 2023-08-16 tags: - attack.execution - attack.stealth - attack.t1059.005 - attack.t1218 - attack.t1202 logsource: category: process_creation product: windows detection: selection: ParentImage|endswith: - \bginfo.exe - \bginfo64.exe condition: selection falsepositives: - Unknown level: medium
Near-miss passage: Sigma rule: Detects suspicious FileFix execution patterns where users are tricked into running malicious commands through browser fi. Logsource: windows / process_creation. Rule: title: Suspicious FileFix Execution Pattern id: b5b29e4e-31fa-4fdf-b058-296e7a1aa0c2 related: - id: 4fee3d51-8069-4a4c-a0f7-924fcaff2c70 type: similar - id: 4be03877-d5b6-4520-85c9-a5911c0a656c type: obsolete status: experimental description: 'Detects suspicious FileFix execution patterns where users are tricked into running malicious commands through browser file upload dialog manipulation. This attack typically begins when users visit malicious websites impersonating legitimate services or news platforms, which may display fake CAPTCHA challenges or direct instructions to open file explorer and paste clipboard content. The clipboard content usually contains commands that download and execute malware, such as information stealing tools. ' references: - https://mrd0x.com/filefix-clickfix-alternative/ - https://expel.com/blog/cache-smuggling-when-a-picture-isnt-a-thousand-words/ - https://blog.checkpoint.com/research/filefix-the-new-social-engineering-attack-building-on-clickfix-tested-in-the-wild/ author: 0xFustang, Swachchhanda Shrawan Poudel (Nextron Systems) date: 2025-11-24 tags: - attack.execution - attack.t1204.004 logsource: category: process_creation product: windows detection: selection_exec_parent: ParentImage|endswith: - \brave.exe - \chrome.exe - \firefox.exe - \msedge.exe CommandLine|contains: '#' selection_cli_lolbin: CommandLine|contains: - '%comspec%' - bitsadmin - certutil - cmd - cscript - curl - finger - mshta - powershell - pwsh - regsvr32 - rundll32 - schtasks - wget - wscript selection_cli_captcha: CommandLine|contains: - account - anti-bot - botcheck - captcha - challenge - confirmation - fraud - human - identification - identificator - identity - robot - validation - verification - verify condition: selection_exec_parent and 1 of selection_cli_* falsepositives: - Legitimate use of PowerShell or other utilities launched from browser extensions or automation tools level: high