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Trojan.MulDrop5.17923

Added to the Dr.Web virus database: 2014-05-03

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Classes\cmdfile\shell\open\command] '' = '"%1" %*'
  • [<HKLM>\SOFTWARE\Classes\batfile\shell\open\command] '' = '"%1" %*'
  • [<HKLM>\SOFTWARE\Classes\comfile\shell\open\command] '' = '"%1" %*'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] 'GrpConv' = 'grpconv -o'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] '' = ''
  • [<HKLM>\SOFTWARE\Classes\piffile\shell\open\command] '' = '"%1" %*'
  • [<HKLM>\SOFTWARE\Classes\.pif] '' = 'piffile'
  • [<HKLM>\SOFTWARE\Classes\.com] '' = 'comfile'
  • [<HKLM>\SOFTWARE\Classes\exefile\shell\open\command] '' = '"%1" %*'
  • [<HKLM>\SOFTWARE\Classes\cfxxefile\shell\open\command] '' = '"%1" %*'
  • [<HKLM>\SOFTWARE\Classes\.cmd] '' = 'cmdfile'
  • [<HKLM>\SOFTWARE\Classes\.bat] '' = 'batfile'
  • [<HKLM>\SOFTWARE\Classes\.exe] '' = 'exefile'
Malicious functions:
To complicate detection of its presence in the operating system,
blocks the following features:
  • System Restore (SR)
Creates and executes the following:
  • 'C:\32788R22FWJFW\License\firefox.exe' -s450000-1400000 -t!k -t!o -t!g -k C:\*.exe and not "<Full path to virus>"
  • 'C:\32788R22FWJFW\firefox.exe' exec hide 32788R22FWJFW\License\FireFox.exe -rk { "%PROGRAM_FILES%\*" or "%CommonProgramFiles%\*" or "%APPDATA%\*" or "%HOMEPATH%\*" } not "<Full path to virus>"
  • 'C:\32788R22FWJFW\firefox.exe' exec hide 32788R22FWJFW\License\FireFox.exe -k * and { "%ALLUSERSPROFILE%\*" or "%TEMP%\*" } not "<Full path to virus>"
  • 'C:\32788R22FWJFW\firefox.exe' exec hide 32788R22FWJFW\License\FireFox.exe -loadline32788R22FWJFW\License\UnxUtilsDist.pif and not "<Full path to virus>"
  • 'C:\32788R22FWJFW\firefox.exe' exec hide 32788R22FWJFW\License\FireFox.exe -loadline32788R22FWJFW\License\UnxUtilsDist.com and not "<Full path to virus>"
  • 'C:\32788R22FWJFW\License\firefox.exe' -rk { "%PROGRAM_FILES%\*" or "%CommonProgramFiles%\*" or "%APPDATA%\*" or "%HOMEPATH%\*" } not "<Full path to virus>"
  • 'C:\32788R22FWJFW\License\firefox.exe' -k * and { "%ALLUSERSPROFILE%\*" or "%TEMP%\*" } not "<Full path to virus>"
  • 'C:\32788R22FWJFW\firefox.exe' exec2 hide C:\32788R22FWJFW\License 32788R22FWJFW\License\FireFox.exe -s450000-1400000 -t!k -t!o -t!g -k C:\*.exe and not "<Full path to virus>"
  • 'C:\32788R22FWJFW\firefox.exe' win close ititle "Security essentials"
  • 'C:\32788R22FWJFW\firefox.exe' win close ititle "Security Central"
  • 'C:\32788R22FWJFW\firefox.exe' win close ititle "Security Tool"
  • 'C:\32788R22FWJFW\firefox.exe' win close ititle "Antivirus S"
  • 'C:\32788R22FWJFW\firefox.exe' win close class consolewindowclass
  • 'C:\32788R22FWJFW\firefox.exe' win close ititle "Enterprise Suite"
  • 'C:\32788R22FWJFW\firefox.exe' win close ititle "Virus Protect"
  • 'C:\32788R22FWJFW\License\firefox.exe' -loadline32788R22FWJFW\License\UnxUtilsDist.pif and not "<Full path to virus>"
  • 'C:\32788R22FWJFW\swxcacls.cfxxe' "<SYSTEM32>\cmd.exe" /P /GA:F /GS:F /GU:X /GP:X /I ENABLE /Q
  • 'C:\32788R22FWJFW\hidec.exe' 32788R22FWJFW\SWXCACLS.cfxxe "<SYSTEM32>\cmd.exe" /P /GA:F /GS:F /GU:X /GP:X /I ENABLE /Q
  • 'C:\32788R22FWJFW\swreg.exe' acl "HKLM\SOFTWARE\Microsoft\Command Processor" /reset /q
  • 'C:\32788R22FWJFW\n.pif' exec hide 32788R22FWJFW\SWREG.exe acl "hklm\software\microsoft\windows nt\currentversion\windows" /O Guest /Q
  • 'C:\32788R22FWJFW\n.pif' cmdwait 150 exec hide 32788R22FWJFW\SWREG.exe acl "hklm\software\microsoft\windows nt\currentversion\windows" /DE:F /Q
  • 'C:\32788R22FWJFW\hidec.exe' 32788R22FWJFW\SWREG.exe acl "hklm\software\microsoft\windows nt\currentversion\windows" /O Guest /Q
  • 'C:\32788R22FWJFW\swreg.exe' acl "hklm\software\microsoft\windows nt\currentversion\windows" /O Guest /Q
  • 'C:\32788R22FWJFW\hidec.exe' 32788R22FWJFW\swreg.exe acl "HKLM\SOFTWARE\Microsoft\Command Processor" /reset /q
  • 'C:\32788R22FWJFW\hidec.exe' 32788R22FWJFW\PEV.exe RIMPORT 32788R22FWJFW\EXE.reg
  • 'C:\32788R22FWJFW\n.pif' shexec install 32788R22FWJFW\Prep.inf
  • 'C:\32788R22FWJFW\License\firefox.exe' -loadline32788R22FWJFW\License\UnxUtilsDist.com and not "<Full path to virus>"
  • 'C:\32788R22FWJFW\hidec.exe' 32788R22FWJFW\swreg.exe acl "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers32" /da:r /q
  • 'C:\32788R22FWJFW\swreg.exe' acl "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options" /reset /q
  • 'C:\32788R22FWJFW\swreg.exe' acl "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers32" /da:r /q
  • 'C:\32788R22FWJFW\hidec.exe' 32788R22FWJFW\swreg.exe acl "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options" /reset /q
  • 'C:\32788R22FWJFW\iexplore.exe' win close ititle "Enterprise Suite"
  • 'C:\32788R22FWJFW\iexplore.exe' win close ititle "Virus Protect"
  • 'C:\32788R22FWJFW\iexplore.exe' win close ititle "Antivirus S"
  • 'C:\32788R22FWJFW\iexplore.exe' win close class consolewindowclass
  • 'C:\32788R22FWJFW\iexplore.exe' exec hide 32788R22FWJFW\License\iexplore.exe -rk { "%PROGRAM_FILES%\*" or "%CommonProgramFiles%\*" or "%HOMEPATH%\*" } not "<Full path to virus>"
  • 'C:\32788R22FWJFW\iexplore.exe' exec hide 32788R22FWJFW\License\iexplore.exe -k * and { "%ALLUSERSPROFILE%\*" or "%TEMP%\*" or "%APPDATA%\*" } not "<Full path to virus>"
  • 'C:\32788R22FWJFW\iexplore.exe' exec2 hide C:\32788R22FWJFW\License 32788R22FWJFW\License\iexplore.exe -s450000-1400000 -t!k -t!o -t!g -k C:\*.exe and not "<Full path to virus>"
  • 'C:\32788R22FWJFW\iexplore.exe' win close ititle "Security essentials"
  • 'C:\32788R22FWJFW\iexplore.exe' win close ititle "System Tool"
  • 'C:\32788R22FWJFW\pev.exe' RIMPORT 32788R22FWJFW\EXE.reg
  • 'C:\32788R22FWJFW\n.pif' exec hide 32788R22FWJFW\PEV.exe RIMPORT 32788R22FWJFW\EXE.reg
  • 'C:\32788R22FWJFW\iexplore.exe' win close ititle " Security"
  • 'C:\32788R22FWJFW\iexplore.exe' win close ititle "Security Central"
  • 'C:\32788R22FWJFW\iexplore.exe' win close ititle "Security Tool"
  • 'C:\32788R22FWJFW\iexplore.exe' win close ititle "SysInternals"
  • 'C:\32788R22FWJFW\License\iexplore.exe' -s450000-1400000 -t!k -t!o -t!g -k C:\*.exe and not "<Full path to virus>"
  • 'C:\32788R22FWJFW\pev.exe' -loadline32788R22FWJFW\License\UnxUtilsDist.com and not "<Full path to virus>"
  • 'C:\32788R22FWJFW\n.pif' exec hide 32788R22FWJFW\pev.exe -loadline32788R22FWJFW\License\UnxUtilsDist.com and not "<Full path to virus>"
  • 'C:\32788R22FWJFW\License\iexplore.exe' -loadline32788R22FWJFW\License\UnxUtilsDist.com and not "<Full path to virus>"
  • 'C:\32788R22FWJFW\hidec.exe' 32788R22FWJFW\pev.exe -loadline32788R22FWJFW\License\UnxUtilsDist.com and not "<Full path to virus>"
  • 'C:\32788R22FWJFW\firefox.exe' win close ititle "SysInternals"
  • 'C:\32788R22FWJFW\firefox.exe' win close ititle " Security"
  • 'C:\32788R22FWJFW\firefox.exe' win close ititle "System Tool"
  • 'C:\32788R22FWJFW\iexplore.exe' exec hide 32788R22FWJFW\License\iexplore.exe -loadline32788R22FWJFW\License\UnxUtilsDist.com and not "<Full path to virus>"
  • 'C:\32788R22FWJFW\License\iexplore.exe' -rk { "%PROGRAM_FILES%\*" or "%CommonProgramFiles%\*" or "%HOMEPATH%\*" } not "<Full path to virus>"
  • 'C:\32788R22FWJFW\License\iexplore.exe' -k * and { "%ALLUSERSPROFILE%\*" or "%TEMP%\*" or "%APPDATA%\*" } not "<Full path to virus>"
  • 'C:\32788R22FWJFW\iexplore.exe' exec hide 32788R22FWJFW\License\iexplore.exe -loadline32788R22FWJFW\License\UnxUtilsDist.pif and not "<Full path to virus>"
  • 'C:\32788R22FWJFW\License\iexplore.exe' -loadline32788R22FWJFW\License\UnxUtilsDist.pif and not "<Full path to virus>"
  • 'C:\32788R22FWJFW\hidec.exe' 32788R22FWJFW\pev.exe -loadline32788R22FWJFW\License\UnxUtilsDist.pif and not "<Full path to virus>"
  • 'C:\32788R22FWJFW\pev.exe' -loadline32788R22FWJFW\License\UnxUtilsDist.pif and not "<Full path to virus>"
  • 'C:\32788R22FWJFW\n.pif' exec hide 32788R22FWJFW\pev.exe -loadline32788R22FWJFW\License\UnxUtilsDist.pif and not "<Full path to virus>"
Executes the following:
  • '<SYSTEM32>\runonce.exe' -r
  • '<SYSTEM32>\rundll32.exe' setupapi,InstallHinfSection DefaultInstall 132 C:\32788R22FWJFW\Prep.inf
Modifies file system :
Creates the following files:
  • C:\32788R22FWJFW\netsvc.vista.dat
  • C:\32788R22FWJFW\netsvc.dat
  • C:\32788R22FWJFW\netsvc.bad.dat
  • C:\32788R22FWJFW\Policies.dat
  • C:\32788R22FWJFW\NetworkService.dat
  • C:\32788R22FWJFW\netsvc.xp.dat
  • C:\32788R22FWJFW\LocalService.dat
  • C:\32788R22FWJFW\Imefile.dat
  • C:\32788R22FWJFW\Fin.dat
  • C:\32788R22FWJFW\ndis_combofix.dat
  • C:\32788R22FWJFW\LocalSystemNetworkRestricted.dat
  • C:\32788R22FWJFW\LocalServiceNetworkRestricted.dat
  • C:\32788R22FWJFW\Safeboot.def.w7.dat
  • C:\32788R22FWJFW\safeboot.def.vista.dat
  • C:\32788R22FWJFW\safeboot.def.dat
  • C:\32788R22FWJFW\svchost.vista.dat
  • C:\32788R22FWJFW\svchost.dat
  • C:\32788R22FWJFW\svc_wht.dat
  • C:\32788R22FWJFW\RCLink.dat
  • C:\32788R22FWJFW\Purity.dat
  • C:\32788R22FWJFW\powp.dat
  • C:\32788R22FWJFW\safeboot.dat
  • C:\32788R22FWJFW\rogues.dat
  • C:\32788R22FWJFW\region.dat
  • C:\32788R22FWJFW\s0rt.cfxxe
  • C:\32788R22FWJFW\rmbr.cfxxe
  • C:\32788R22FWJFW\pevb.cfxxe
  • C:\32788R22FWJFW\swsc.cfxxe
  • C:\32788R22FWJFW\setpath.cfxxe
  • C:\32788R22FWJFW\sed.cfxxe
  • C:\32788R22FWJFW\License\ncmd.cfxxe
  • C:\32788R22FWJFW\mtee.cfxxe
  • C:\32788R22FWJFW\mbr.cfxxe
  • C:\32788R22FWJFW\pausep.cfxxe
  • C:\32788R22FWJFW\NirCmdC.cfxxe
  • C:\32788R22FWJFW\NirCmd.cfxxe
  • C:\32788R22FWJFW\023w7.dat
  • C:\32788R22FWJFW\023v.dat
  • C:\32788R22FWJFW\023.dat
  • C:\32788R22FWJFW\Dnl.dat
  • C:\32788R22FWJFW\CregC.dat
  • C:\32788R22FWJFW\Creg.dat
  • C:\32788R22FWJFW\zip.cfxxe
  • C:\32788R22FWJFW\tail.cfxxe
  • C:\32788R22FWJFW\swxcacls.cfxxe
  • C:\32788R22FWJFW\VwinTemp.dacl
  • C:\32788R22FWJFW\NirCmd.chm
  • C:\32788R22FWJFW\mbr.chk
  • C:\32788R22FWJFW\svchost.vista.x64.dat
  • C:\32788R22FWJFW\toolbar.sed
  • C:\32788R22FWJFW\run2.sed
  • C:\32788R22FWJFW\RegDo.sed
  • C:\32788R22FWJFW\Rust.str
  • C:\32788R22FWJFW\DPF.str
  • C:\32788R22FWJFW\asp.str
  • C:\32788R22FWJFW\XPSBoot.reg
  • C:\32788R22FWJFW\Exe.reg
  • C:\32788R22FWJFW\License\UnxUtilsDist.pif
  • C:\32788R22FWJFW\REGDACL.sed
  • C:\32788R22FWJFW\embedded.sed
  • C:\32788R22FWJFW\ddsDo.sed
  • C:\32788R22FWJFW\Wmi_rem.vbs
  • C:\32788R22FWJFW\SvcDrv.vbs
  • C:\32788R22FWJFW\restore_pt.vbs
  • C:\32788R22FWJFW\License\streamtools.zip
  • C:\32788R22FWJFW\License\pv_5_2_2.zip
  • C:\32788R22FWJFW\image001.gif
  • C:\32788R22FWJFW\DrvRun.vbs
  • C:\32788R22FWJFW\BootDrv.vbs
  • C:\32788R22FWJFW\av.vbs
  • C:\32788R22FWJFW\OSid.vbs
  • C:\32788R22FWJFW\lnkread.vbs
  • C:\32788R22FWJFW\Ksvchost.vbs
  • C:\32788R22FWJFW\w7Mcode.dat
  • C:\32788R22FWJFW\w2kreg.dat
  • C:\32788R22FWJFW\vun.dat
  • C:\32788R22FWJFW\xpreg.dat
  • C:\32788R22FWJFW\xpmcode.dat
  • C:\32788R22FWJFW\w7reg.dat
  • C:\32788R22FWJFW\system_ini.dat
  • C:\32788R22FWJFW\svchost.w7.x64.dat
  • C:\32788R22FWJFW\svchost.w7.dat
  • C:\32788R22FWJFW\vistareg.dat
  • C:\32788R22FWJFW\vistaMcode.dat
  • C:\32788R22FWJFW\Vipev.dat
  • C:\32788R22FWJFW\hwid.pif
  • C:\32788R22FWJFW\files.pif
  • C:\32788R22FWJFW\srizbi.md5
  • C:\32788R22FWJFW\n.pif
  • C:\32788R22FWJFW\md5sum00.pif
  • C:\32788R22FWJFW\md5sum.pif
  • C:\32788R22FWJFW\ERDNT.e_e
  • C:\32788R22FWJFW\zhsvc.dat
  • C:\32788R22FWJFW\zDomain.dat
  • C:\32788R22FWJFW\ERUNT.LOC
  • C:\32788R22FWJFW\ERDNTWIN.LOC
  • C:\32788R22FWJFW\ERDNTDOS.LOC
  • C:\32788R22FWJFW\CSet.cmd
  • C:\32788R22FWJFW\CregC.cmd
  • C:\32788R22FWJFW\Create.cmd
  • C:\32788R22FWJFW\GetHive.cmd
  • C:\32788R22FWJFW\FKMGen.cmd
  • C:\32788R22FWJFW\FD-SV.cmd
  • C:\32788R22FWJFW\AWF.cmd
  • C:\32788R22FWJFW\av.cmd
  • C:\32788R22FWJFW\Auto-RC.cmd
  • C:\32788R22FWJFW\CF-Script.cmd
  • C:\32788R22FWJFW\Catch-sub.cmd
  • C:\32788R22FWJFW\Boot-Rk.cmd
  • C:\32788R22FWJFW\SnapShot.cmd
  • C:\32788R22FWJFW\Rkey.cmd
  • C:\32788R22FWJFW\RegScan64.cmd
  • C:\32788R22FWJFW\Update-CF.cmd
  • C:\32788R22FWJFW\SuppScan.cmd
  • C:\32788R22FWJFW\SRestore.cmd
  • C:\32788R22FWJFW\Kill-All.cmd
  • C:\32788R22FWJFW\katch.cmd
  • C:\32788R22FWJFW\Install-RC.cmd
  • C:\32788R22FWJFW\RegScan.cmd
  • C:\32788R22FWJFW\P.cmd
  • C:\32788R22FWJFW\NT-OS.cmd
  • C:\32788R22FWJFW\c.bat
  • C:\32788R22FWJFW\Boot.bat
  • C:\32788R22FWJFW\License\UnxUtilsDist.html
  • C:\32788R22FWJFW\DelClsid64.bat
  • C:\32788R22FWJFW\DelClsid.bat
  • C:\32788R22FWJFW\Combobatch.bat
  • C:\32788R22FWJFW\License\EXTRACT.TXT
  • C:\32788R22FWJFW\License\dumphive-license.txt
  • C:\32788R22FWJFW\License\Curl - license.txt
  • C:\32788R22FWJFW\License\Zip - license.txt
  • C:\32788R22FWJFW\License\mtee.txt.txt
  • C:\32788R22FWJFW\License\FI - license.txt
  • C:\32788R22FWJFW\MoveIt.bat
  • C:\32788R22FWJFW\List.bat
  • C:\32788R22FWJFW\List-D.bat
  • C:\32788R22FWJFW\Assoc.cmd
  • C:\32788R22FWJFW\SetEnvmt.bat
  • C:\32788R22FWJFW\ND_.bat
  • C:\32788R22FWJFW\history.bat
  • C:\32788R22FWJFW\FIXLSP.bat
  • C:\32788R22FWJFW\FIND3M.bat
  • C:\32788R22FWJFW\List-C.bat
  • C:\32788R22FWJFW\List-B.bat
  • C:\32788R22FWJFW\Lang.bat
  • C:\32788R22FWJFW\badclsid.c
  • C:\32788R22FWJFW\ProgramsFolder.cfx
  • C:\32788R22FWJFW\ProgramsFile.cfx
  • C:\32788R22FWJFW\ProfilesFolder.cfx
  • C:\32788R22FWJFW\StartUpFile.cfx
  • C:\32788R22FWJFW\StartMenuFolder.cfx
  • C:\32788R22FWJFW\StartMenuFile.cfx
  • C:\32788R22FWJFW\LocalSettingsFile.cfx
  • C:\32788R22FWJFW\LocalAppDataFolder.cfx
  • C:\32788R22FWJFW\LocalAppDataFile.cfx
  • C:\32788R22FWJFW\ProfilesFile.cfx
  • C:\32788R22FWJFW\PersonalFolder.cfx
  • C:\32788R22FWJFW\PersonalFile.cfx
  • C:\32788R22FWJFW\FileKill.cfxxe
  • C:\32788R22FWJFW\extract.cfxxe
  • C:\32788R22FWJFW\ERUNT.cfxxe
  • C:\32788R22FWJFW\handle.cfxxe
  • C:\32788R22FWJFW\gsar.cfxxe
  • C:\32788R22FWJFW\grep.cfxxe
  • C:\32788R22FWJFW\catchme.cfxxe
  • C:\32788R22FWJFW\TemplatesFolder.cfx
  • C:\32788R22FWJFW\TemplatesFile.cfx
  • C:\32788R22FWJFW\dumphive.cfxxe
  • C:\32788R22FWJFW\dd.cfxxe
  • C:\32788R22FWJFW\ComboFix-Download.cfxxe
  • C:\32788R22FWJFW\iexplore.exe
  • C:\32788R22FWJFW\hidec.exe
  • C:\32788R22FWJFW\License\firefox.exe
  • C:\32788R22FWJFW\swreg.exe
  • C:\32788R22FWJFW\pev.exe
  • C:\32788R22FWJFW\License\iexplore.exe
  • C:\32788R22FWJFW\ncmd.com
  • C:\32788R22FWJFW\Prep.inf
  • C:\32788R22FWJFW\clsid.c
  • C:\32788R22FWJFW\firefox.exe
  • C:\32788R22FWJFW\License\UnxUtilsDist.com
  • C:\32788R22FWJFW\pv.com
  • C:\32788R22FWJFW\AppDataFolder.cfx
  • C:\32788R22FWJFW\AppDataFile.cfx
  • C:\32788R22FWJFW\appinit.bad
  • C:\32788R22FWJFW\FavoritesFile.cfx
  • C:\32788R22FWJFW\FavoriteFolder.cfx
  • C:\32788R22FWJFW\DesktopFile.cfx
  • C:\32788R22FWJFW\w2k_sock.dll
  • C:\32788R22FWJFW\w_sock.dll
  • C:\32788R22FWJFW\ffdefstr.dll
  • C:\32788R22FWJFW\VInfo2
  • C:\32788R22FWJFW\VInfo
  • C:\32788R22FWJFW\Combo-Fix.sys
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: '(null)'
  • ClassName: 'EDIT' WindowName: '(null)'

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