SigmaHQ/rules/windows/process_creation/win_susp_process_creations.yml

# Sigma rule: rules/windows/builtin/win_susp_process_creations.yml
title: Suspicious Process Creation
description: Detects suspicious process starts on Windows systems based on keywords
status: experimental
references:
    - https://www.swordshield.com/2015/07/getting-hashes-from-ntds-dit-file/
    - https://www.youtube.com/watch?v=H3t_kHQG1Js&feature=youtu.be&t=15m35s
    - https://winscripting.blog/2017/05/12/first-entry-welcome-and-uac-bypass/
    - https://twitter.com/subTee/status/872244674609676288
    - https://docs.microsoft.com/en-us/windows-hardware/drivers/debugger/remote-tool-examples
    - https://tyranidslair.blogspot.ca/2017/07/dg-on-windows-10-s-executing-arbitrary.html
    - https://www.trustedsec.com/2017/07/new-tool-release-nps_payload/
    - https://subt0x10.blogspot.ca/2017/04/bypassing-application-whitelisting.html
    - https://gist.github.com/subTee/7937a8ef07409715f15b84781e180c46#file-rat-bat
    - https://twitter.com/vector_sec/status/896049052642533376
    - http://security-research.dyndns.org/pub/slides/FIRST-TC-2018/FIRST-TC-2018_Tom-Ueltschi_Sysmon_PUBLIC.pdf
author: Florian Roth
modified: 2018/12/11
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine:
            - vssadmin.exe delete shadows*
            - vssadmin delete shadows*
            - vssadmin create shadow /for=C:*
            - copy \\?\GLOBALROOT\Device\\*\windows\ntds\ntds.dit*
            - copy \\?\GLOBALROOT\Device\\*\config\SAM*
            - reg SAVE HKLM\SYSTEM *
            - reg SAVE HKLM\SAM *
            - '* sekurlsa:*'
            - net localgroup adminstrators * /add
            - net group "Domain Admins" * /ADD /DOMAIN
            - certutil.exe *-urlcache* http*
            - certutil.exe *-urlcache* ftp*
            - netsh advfirewall firewall *\AppData\\*
            - attrib +S +H +R *\AppData\\*
            - schtasks* /create *\AppData\\*
            - schtasks* /sc minute*
            - '*\Regasm.exe *\AppData\\*'
            - '*\Regasm *\AppData\\*'
            - '*\bitsadmin* /transfer*'
            - '*\certutil.exe * -decode *'
            - '*\certutil.exe * -decodehex *'
            - '*\certutil.exe -ping *'
            - icacls * /grant Everyone:F /T /C /Q
            - '* wmic shadowcopy delete *'
            - '* wbadmin.exe delete catalog -quiet*'
            - '*\wscript.exe *.jse'
            - '*\wscript.exe *.js'
            - '*\wscript.exe *.vba'
            - '*\wscript.exe *.vbe'
            - '*\cscript.exe *.jse'
            - '*\cscript.exe *.js'
            - '*\cscript.exe *.vba'
            - '*\cscript.exe *.vbe'
            - '*\fodhelper.exe'
            - '*waitfor*/s*'
            - '*waitfor*/si persist*'
            - '*remote*/s*'
            - '*remote*/c*'
            - '*remote*/q*'
            - '*AddInProcess*'
            - '* /stext *'
            - '* /scomma *'
            - '* /stab *'
            - '* /stabular *'
            - '* /shtml *'
            - '* /sverhtml *'
            - '* /sxml *'
    condition: selection
falsepositives:
    - False positives depend on scripts and administrative tools used in the monitored environment
level: medium