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ニュース

Trojan.MulDrop13.1512

Added to the Dr.Web virus database: 2020-06-11

Virus description added:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [<HKLM>\Software\Classes\cfxxefile\shell\open\command] '' = '"%1" %*'
  • [<HKLM>\Software\Classes\exefile\shell\open\command] '' = '"%1" %*'
  • [<HKLM>\Software\Classes\.com] '' = 'comfile'
  • [<HKLM>\Software\Classes\.exe] '' = 'exefile'
  • [<HKLM>\Software\Classes\.bat] '' = 'batfile'
  • [<HKLM>\Software\Classes\.cmd] '' = 'cmdfile'
  • [<HKLM>\Software\Classes\.pif] '' = 'piffile'
  • [<HKLM>\Software\Classes\comfile\shell\open\command] '' = '"%1" %*'
  • [<HKLM>\Software\Classes\batfile\shell\open\command] '' = '"%1" %*'
  • [<HKLM>\Software\Classes\cmdfile\shell\open\command] '' = '"%1" %*'
  • [<HKLM>\Software\Classes\piffile\shell\open\command] '' = '"%1" %*'
  • [<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce] '' = ''
  • [<HKLM>\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce] 'GrpConv' = 'grpconv -o'
Malicious functions
To complicate detection of its presence in the operating system,
blocks the following features:
  • System Restore (SR)
Modifies file system
Creates the following files
  • C:\32788r22fwjfw\license\curl - license.txt
  • C:\32788r22fwjfw\netsvc.dat
  • C:\32788r22fwjfw\netsvc.vista.dat
  • C:\32788r22fwjfw\netsvc.xp.dat
  • C:\32788r22fwjfw\networkservice.dat
  • C:\32788r22fwjfw\policies.dat
  • C:\32788r22fwjfw\powp.dat
  • C:\32788r22fwjfw\purity.dat
  • C:\32788r22fwjfw\mbr.chk
  • C:\32788r22fwjfw\rclink.dat
  • C:\32788r22fwjfw\rogues.dat
  • C:\32788r22fwjfw\safeboot.dat
  • C:\32788r22fwjfw\safeboot.def.dat
  • C:\32788r22fwjfw\safeboot.def.vista.dat
  • C:\32788r22fwjfw\safeboot.def.w7.dat
  • C:\32788r22fwjfw\svc_wht.dat
  • C:\32788r22fwjfw\svchost.dat
  • C:\32788r22fwjfw\svchost.vista.dat
  • C:\32788r22fwjfw\localsystemnetworkrestricted.dat
  • C:\32788r22fwjfw\region.dat
  • C:\32788r22fwjfw\netsvc.bad.dat
  • C:\32788r22fwjfw\ndis_combofix.dat
  • C:\32788r22fwjfw\localservicenetworkrestricted.dat
  • C:\32788r22fwjfw\localservice.dat
  • C:\32788r22fwjfw\nircmdc.cfxxe
  • C:\32788r22fwjfw\pausep.cfxxe
  • C:\32788r22fwjfw\sed.cfxxe
  • C:\32788r22fwjfw\setpath.cfxxe
  • C:\32788r22fwjfw\swsc.cfxxe
  • C:\32788r22fwjfw\swxcacls.cfxxe
  • C:\32788r22fwjfw\tail.cfxxe
  • C:\32788r22fwjfw\svchost.w7.dat
  • C:\32788r22fwjfw\zip.cfxxe
  • C:\32788r22fwjfw\license\ncmd.cfxxe
  • C:\32788r22fwjfw\nircmd.chm
  • C:\32788r22fwjfw\023.dat
  • C:\32788r22fwjfw\023v.dat
  • C:\32788r22fwjfw\023w7.dat
  • C:\32788r22fwjfw\creg.dat
  • C:\32788r22fwjfw\cregc.dat
  • C:\32788r22fwjfw\dnl.dat
  • C:\32788r22fwjfw\fin.dat
  • C:\32788r22fwjfw\ncmd.cfxxe
  • C:\32788r22fwjfw\imefile.dat
  • C:\32788r22fwjfw\vwintemp.dacl
  • C:\32788r22fwjfw\nircmd.cfxxe
  • C:\32788r22fwjfw\svchost.w7.x64.dat
  • C:\32788r22fwjfw\vistareg.dat
  • C:\32788r22fwjfw\regdacl.sed
  • C:\32788r22fwjfw\regdo.sed
  • C:\32788r22fwjfw\run2.sed
  • C:\32788r22fwjfw\toolbar.sed
  • C:\32788r22fwjfw\asp.str
  • C:\32788r22fwjfw\dpf.str
  • C:\32788r22fwjfw\rust.str
  • C:\32788r22fwjfw\av.vbs
  • C:\32788r22fwjfw\exe.reg
  • C:\32788r22fwjfw\bootdrv.vbs
  • C:\32788r22fwjfw\lnkread.vbs
  • C:\32788r22fwjfw\osid.vbs
  • C:\32788r22fwjfw\restore_pt.vbs
  • C:\32788r22fwjfw\svcdrv.vbs
  • C:\32788r22fwjfw\wmi_rem.vbs
  • C:\32788r22fwjfw\image001.gif
  • C:\32788r22fwjfw\license\pv_5_2_2.zip
  • C:\32788r22fwjfw\license\streamtools.zip
  • C:\32788r22fwjfw\ddsdo.sed
  • C:\32788r22fwjfw\embedded.sed
  • C:\32788r22fwjfw\xpsboot.reg
  • C:\32788r22fwjfw\license\unxutilsdist.pif
  • C:\32788r22fwjfw\w_sock.dll
  • C:\32788r22fwjfw\vun.dat
  • C:\32788r22fwjfw\w2kreg.dat
  • C:\32788r22fwjfw\w7mcode.dat
  • C:\32788r22fwjfw\w7reg.dat
  • C:\32788r22fwjfw\xpmcode.dat
  • C:\32788r22fwjfw\xpreg.dat
  • C:\32788r22fwjfw\zdomain.dat
  • C:\32788r22fwjfw\system_ini.dat
  • C:\32788r22fwjfw\vistamcode.dat
  • C:\32788r22fwjfw\vipev.dat
  • C:\32788r22fwjfw\zhsvc.dat
  • C:\32788r22fwjfw\erunt.loc
  • C:\32788r22fwjfw\srizbi.md5
  • C:\32788r22fwjfw\files.pif
  • C:\32788r22fwjfw\hwid.pif
  • C:\32788r22fwjfw\md5sum.pif
  • C:\32788r22fwjfw\md5sum00.pif
  • C:\32788r22fwjfw\n.pif
  • C:\32788r22fwjfw\erdnt.e_e
  • C:\32788r22fwjfw\erdntdos.loc
  • C:\32788r22fwjfw\erdntwin.loc
  • C:\32788r22fwjfw\mtee.cfxxe
  • C:\32788r22fwjfw\mbr.cfxxe
  • C:\32788r22fwjfw\handle.cfxxe
  • C:\32788r22fwjfw\boot-rk.cmd
  • C:\32788r22fwjfw\catch-sub.cmd
  • C:\32788r22fwjfw\cf-script.cmd
  • C:\32788r22fwjfw\create.cmd
  • C:\32788r22fwjfw\cregc.cmd
  • C:\32788r22fwjfw\cset.cmd
  • C:\32788r22fwjfw\fd-sv.cmd
  • C:\32788r22fwjfw\fkmgen.cmd
  • C:\32788r22fwjfw\srestore.cmd
  • C:\32788r22fwjfw\gethive.cmd
  • C:\32788r22fwjfw\katch.cmd
  • C:\32788r22fwjfw\kill-all.cmd
  • C:\32788r22fwjfw\nt-os.cmd
  • C:\32788r22fwjfw\p.cmd
  • C:\32788r22fwjfw\regscan.cmd
  • C:\32788r22fwjfw\regscan64.cmd
  • C:\32788r22fwjfw\rkey.cmd
  • C:\32788r22fwjfw\auto-rc.cmd
  • C:\32788r22fwjfw\assoc.cmd
  • C:\32788r22fwjfw\awf.cmd
  • C:\32788r22fwjfw\setenvmt.bat
  • C:\32788r22fwjfw\nd_.bat
  • C:\32788r22fwjfw\license\dumphive-license.txt
  • C:\32788r22fwjfw\license\fi - license.txt
  • C:\32788r22fwjfw\license\mtee.txt.txt
  • C:\32788r22fwjfw\license\zip - license.txt
  • C:\32788r22fwjfw\license\unxutilsdist.html
  • C:\32788r22fwjfw\boot.bat
  • C:\32788r22fwjfw\c.bat
  • C:\32788r22fwjfw\combobatch.bat
  • C:\32788r22fwjfw\snapshot.cmd
  • C:\32788r22fwjfw\delclsid.bat
  • C:\32788r22fwjfw\install-rc.cmd
  • C:\32788r22fwjfw\find3m.bat
  • C:\32788r22fwjfw\history.bat
  • C:\32788r22fwjfw\lang.bat
  • C:\32788r22fwjfw\list-b.bat
  • C:\32788r22fwjfw\list-c.bat
  • C:\32788r22fwjfw\list-d.bat
  • C:\32788r22fwjfw\list.bat
  • C:\32788r22fwjfw\moveit.bat
  • C:\32788r22fwjfw\delclsid64.bat
  • C:\32788r22fwjfw\license\extract.txt
  • C:\32788r22fwjfw\fixlsp.bat
  • C:\32788r22fwjfw\av.cmd
  • C:\32788r22fwjfw\suppscan.cmd
  • C:\32788r22fwjfw\personalfile.cfx
  • C:\32788r22fwjfw\profilesfile.cfx
  • C:\32788r22fwjfw\profilesfolder.cfx
  • C:\32788r22fwjfw\programsfile.cfx
  • C:\32788r22fwjfw\programsfolder.cfx
  • C:\32788r22fwjfw\startmenufile.cfx
  • C:\32788r22fwjfw\startmenufolder.cfx
  • C:\32788r22fwjfw\startupfile.cfx
  • C:\32788r22fwjfw\localsettingsfile.cfx
  • C:\32788r22fwjfw\update-cf.cmd
  • C:\32788r22fwjfw\personalfolder.cfx
  • C:\32788r22fwjfw\templatesfile.cfx
  • C:\32788r22fwjfw\dd.cfxxe
  • C:\32788r22fwjfw\dumphive.cfxxe
  • C:\32788r22fwjfw\erunt.cfxxe
  • C:\32788r22fwjfw\extract.cfxxe
  • C:\32788r22fwjfw\filekill.cfxxe
  • C:\32788r22fwjfw\grep.cfxxe
  • C:\32788r22fwjfw\gsar.cfxxe
  • C:\32788r22fwjfw\templatesfolder.cfx
  • C:\32788r22fwjfw\catchme.cfxxe
  • C:\32788r22fwjfw\combofix-download.cfxxe
  • C:\32788r22fwjfw\drvrun.vbs
  • C:\32788r22fwjfw\en-us\cmd.cfxxe.mui
  • C:\32788r22fwjfw\favoritesfile.cfx
  • C:\32788r22fwjfw\clsid.c
  • C:\32788r22fwjfw\prep.inf
  • C:\32788r22fwjfw\pv.com
  • C:\32788r22fwjfw\hidec.exe
  • C:\32788r22fwjfw\iexplore.exe
  • C:\32788r22fwjfw\license\iexplore.exe
  • C:\32788r22fwjfw\pev.exe
  • C:\32788r22fwjfw\swreg.exe
  • C:\32788r22fwjfw\localappdatafile.cfx
  • C:\32788r22fwjfw\localappdatafolder.cfx
  • C:\32788r22fwjfw\ffdefstr.dll
  • C:\32788r22fwjfw\combo-fix.sys
  • C:\32788r22fwjfw\vinfo
  • C:\32788r22fwjfw\vinfo2
  • C:\32788r22fwjfw\appinit.bad
  • C:\32788r22fwjfw\appdatafile.cfx
  • C:\32788r22fwjfw\appdatafolder.cfx
  • C:\32788r22fwjfw\desktopfile.cfx
  • C:\32788r22fwjfw\favoritefolder.cfx
  • C:\32788r22fwjfw\badclsid.c
  • C:\32788r22fwjfw\w2k_sock.dll
  • C:\32788r22fwjfw\cmd.cfxxe
Miscellaneous
Searches for the following windows
  • ClassName: 'EDIT' WindowName: ''
Creates and executes the following
  • 'C:\32788r22fwjfw\iexplore.exe' win close ititle " Security"
  • 'C:\32788r22fwjfw\n.pif' exec hide 32788R22FWJFW\SWREG.exe acl "hklm\software\microsoft\windows nt\currentversion\windows" /O Guest /Q
  • 'C:\32788r22fwjfw\nircmd.cfxxe' cmdwait 1700 exec hide "32788R22FWJFW\cmd.cfxxe" /c 32788R22FWJFW\p.cmd
  • '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\Command Processor" /reset /q
  • 'C:\32788r22fwjfw\n.pif' cmdwait 3000 exec hide 32788R22FWJFW\swreg.exe acl "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers32" /reset /q
  • 'C:\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\windows nt\currentversion\windows" /O Guest /Q
  • 'C:\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" /reset /q
  • 'C:\32788r22fwjfw\swreg.exe' acl "hklm\software\microsoft\windows nt\currentversion\windows" /DE:F /Q
  • 'C:\32788r22fwjfw\swreg.exe' acl "HKLM\SOFTWARE\Microsoft\Command Processor" /reset /q
  • 'C:\32788r22fwjfw\n.pif' exec hide 32788R22FWJFW\GSAR.cfxxe -if -s\:000M:000i:000c:000r:000o -r\:001M:000i:000c:000r:000o "<SYSTEM32>\cmd.exe" "32788R22FWJFW\cmd.cfxxe"
  • 'C:\32788r22fwjfw\gsar.cfxxe' -if -s\:000M:000i:000c:000r:000o -r\:001M:000i:000c:000r:000o "<SYSTEM32>\cmd.exe" "32788R22FWJFW\cmd.cfxxe"
  • 'C:\32788r22fwjfw\nircmd.cfxxe' exec hide 32788R22FWJFW\GSAR.cfxxe -if -s\:000M:000i:000c:000r:000o -r\:001M:000i:000c:000r:000o "<SYSTEM32>\cmd.exe" "32788R22FWJFW\cmd.cfxxe"
  • 'C:\32788r22fwjfw\n.pif' cmdwait 1000 exec hide "32788R22FWJFW\cmd.cfxxe" /c 32788R22FWJFW\p.cmd
  • 'C:\32788r22fwjfw\n.pif' shellcopy <SYSTEM32>\en-us\cmd.exe.mui 32788R22FWJFW\EN-US\cmd.cfxxe.mui yestoall noerrorui silent nosecattr
  • 'C:\32788r22fwjfw\hidec.exe' 32788R22FWJFW\SWXCACLS.cfxxe "<SYSTEM32>\cmd.exe" /P /GA:F /GS:F /GU:X /GP:X /I ENABLE /Q
  • 'C:\32788r22fwjfw\iexplore.exe' win close ititle "Security essentials"
  • 'C:\32788r22fwjfw\hidec.exe' 32788R22FWJFW\SWREG.exe acl "hklm\software\microsoft\windows nt\currentversion\windows" /DE:F /Q
  • 'C:\32788r22fwjfw\iexplore.exe' exec2 hide C:\32788R22FWJFW\License 32788R22FWJFW\License\iexplore.exe -loadline32788R22FWJFW\License\UnxUtilsDist.pif and not "<Full path to file>"
  • 'C:\32788r22fwjfw\iexplore.exe' win close ititle "SysInternals"
  • 'C:\32788r22fwjfw\iexplore.exe' win close ititle "Security Tool"
  • 'C:\32788r22fwjfw\iexplore.exe' win close ititle "Security Central"
  • 'C:\32788r22fwjfw\iexplore.exe' win close ititle "Antivirus S"
  • 'C:\32788r22fwjfw\hidec.exe' 32788R22FWJFW\SWREG.exe acl "hklm\software\microsoft\windows nt\currentversion\windows" /O Guest /Q
  • 'C:\32788r22fwjfw\iexplore.exe' win close ititle "Enterprise Suite"
  • 'C:\32788r22fwjfw\iexplore.exe' win close class consolewindowclass
  • 'C:\32788r22fwjfw\pev.exe' RIMPORT 32788R22FWJFW\EXE.reg
  • 'C:\32788r22fwjfw\hidec.exe' 32788R22FWJFW\pev.exe -loadline32788R22FWJFW\License\UnxUtilsDist.pif and not "<Full path to file>"
  • 'C:\32788r22fwjfw\iexplore.exe' win close ititle "Virus Protect"
  • 'C:\32788r22fwjfw\n.pif' shexec install 32788R22FWJFW\Prep.inf
  • 'C:\32788r22fwjfw\hidec.exe' 32788R22FWJFW\swreg.exe acl "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options" /reset /q
  • 'C:\32788r22fwjfw\pev.exe' -loadline32788R22FWJFW\License\UnxUtilsDist.pif and not "<Full path to file>"
  • 'C:\32788r22fwjfw\hidec.exe' 32788R22FWJFW\swreg.exe acl "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers32" /da:r /q
  • 'C:\32788r22fwjfw\hidec.exe' 32788R22FWJFW\PEV.exe RIMPORT 32788R22FWJFW\EXE.reg
  • 'C:\32788r22fwjfw\n.pif' exec hide 32788R22FWJFW\PEV.exe RIMPORT 32788R22FWJFW\EXE.reg
  • 'C:\32788r22fwjfw\license\iexplore.exe' -loadline32788R22FWJFW\License\UnxUtilsDist.pif and not "<Full path to file>"
  • 'C:\32788r22fwjfw\n.pif' cmdwait 2500 exec hide "32788R22FWJFW\cmd.cfxxe" /c 32788R22FWJFW\p.cmd
  • 'C:\32788r22fwjfw\license\iexplore.exe' -loadline32788R22FWJFW\License\UnxUtilsDist.pif and not "<Full path to file>"' (with hidden window)
  • 'C:\32788r22fwjfw\gsar.cfxxe' -if -s\:000M:000i:000c:000r:000o -r\:001M:000i:000c:000r:000o "<SYSTEM32>\cmd.exe" "32788R22FWJFW\cmd.cfxxe"' (with hidden window)
  • 'C:\32788r22fwjfw\swreg.exe' acl "hklm\software\microsoft\windows nt\currentversion\windows" /DE:F /Q' (with hidden window)
  • 'C:\32788r22fwjfw\swxcacls.cfxxe' "<SYSTEM32>\cmd.exe" /P /GA:F /GS:F /GU:X /GP:X /I ENABLE /Q' (with hidden window)
  • 'C:\32788r22fwjfw\swreg.exe' acl "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers32" /da:r /q' (with hidden window)
  • 'C:\32788r22fwjfw\pev.exe' -loadline32788R22FWJFW\License\UnxUtilsDist.pif and not "<Full path to file>"' (with hidden window)
  • 'C:\32788r22fwjfw\swreg.exe' acl "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options" /reset /q' (with hidden window)
  • 'C:\32788r22fwjfw\swreg.exe' acl "hklm\software\microsoft\windows nt\currentversion\windows" /O Guest /Q' (with hidden window)
  • 'C:\32788r22fwjfw\swreg.exe' acl "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers32" /reset /q' (with hidden window)
  • 'C:\32788r22fwjfw\swreg.exe' acl "HKLM\SOFTWARE\Microsoft\Command Processor" /reset /q' (with hidden window)
  • 'C:\32788r22fwjfw\pev.exe' RIMPORT 32788R22FWJFW\EXE.reg' (with hidden window)
Executes the following
  • '%WINDIR%\syswow64\rundll32.exe' <SYSTEM32>\shell32.dll,OpenAs_RunDLL C:\32788R22FWJFW\nircmd.cfxxe
  • '%WINDIR%\syswow64\infdefaultinstall.exe' "C:\32788R22FWJFW\Prep.inf"
  • '%WINDIR%\syswow64\runonce.exe' -r
  • '%WINDIR%\syswow64\grpconv.exe' -o

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