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Trojan.Siggen29.53156

Added to the Dr.Web virus database: 2024-10-16

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\purity.dat
  • C:\32788r22fwjfw\rclink.dat
  • C:\32788r22fwjfw\region.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\svchost.w7.dat
  • C:\32788r22fwjfw\svchost.w7.x64.dat
  • C:\32788r22fwjfw\system_ini.dat
  • C:\32788r22fwjfw\vistareg.dat
  • C:\32788r22fwjfw\vun.dat
  • C:\32788r22fwjfw\w2kreg.dat
  • C:\32788r22fwjfw\policies.dat
  • C:\32788r22fwjfw\w7reg.dat
  • C:\32788r22fwjfw\networkservice.dat
  • C:\32788r22fwjfw\netsvc.vista.dat
  • C:\32788r22fwjfw\swxcacls.cfxxe
  • C:\32788r22fwjfw\tail.cfxxe
  • C:\32788r22fwjfw\zip.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\localservice.dat
  • C:\32788r22fwjfw\localservicenetworkrestricted.dat
  • C:\32788r22fwjfw\localsystemnetworkrestricted.dat
  • C:\32788r22fwjfw\ndis_combofix.dat
  • C:\32788r22fwjfw\netsvc.bad.dat
  • C:\32788r22fwjfw\netsvc.dat
  • C:\32788r22fwjfw\netsvc.xp.dat
  • C:\32788r22fwjfw\rust.str
  • C:\32788r22fwjfw\swreg.cfxxe
  • C:\32788r22fwjfw\zhsvc.dat
  • 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\en-us\cmd.cfxxe.mui
  • C:\32788r22fwjfw\cmd.cfxxe
  • C:\32788r22fwjfw\prep.done
  • C:\32788r22fwjfw\osver
  • C:\32788r22fwjfw\osver00
  • C:\32788r22fwjfw\vista.krl
  • C:\32788r22fwjfw\n_\16704
  • C:\32788r22fwjfw\winnt00
  • C:\32788r22fwjfw\set.txt
  • C:\32788r22fwjfw\vercf.bat
  • C:\32788r22fwjfw\lnkread.vbs
  • C:\32788r22fwjfw\swsc.cfxxe
  • C:\32788r22fwjfw\av.vbs
  • C:\32788r22fwjfw\dpf.str
  • C:\32788r22fwjfw\erdnt.e_e
  • C:\32788r22fwjfw\erdntdos.loc
  • C:\32788r22fwjfw\erdntwin.loc
  • C:\32788r22fwjfw\erunt.loc
  • C:\32788r22fwjfw\srizbi.md5
  • C:\32788r22fwjfw\files.pif
  • C:\32788r22fwjfw\md5sum.pif
  • C:\32788r22fwjfw\md5sum00.pif
  • C:\32788r22fwjfw\n.pif
  • C:\32788r22fwjfw\exe.reg
  • C:\32788r22fwjfw\ddsdo.sed
  • C:\32788r22fwjfw\embedded.sed
  • C:\32788r22fwjfw\regdacl.sed
  • C:\32788r22fwjfw\regdo.sed
  • C:\32788r22fwjfw\run2.sed
  • C:\32788r22fwjfw\toolbar.sed
  • C:\32788r22fwjfw\asp.str
  • C:\32788r22fwjfw\xpreg.dat
  • C:\32788r22fwjfw\zdomain.dat
  • C:\32788r22fwjfw\setpath.cfxxe
  • C:\32788r22fwjfw\regscan.cmd
  • C:\32788r22fwjfw\setenvmt.bat
  • C:\32788r22fwjfw\assoc.cmd
  • C:\32788r22fwjfw\auto-rc.cmd
  • C:\32788r22fwjfw\av.cmd
  • C:\32788r22fwjfw\awf.cmd
  • 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\gethive.cmd
  • C:\32788r22fwjfw\install-rc.cmd
  • C:\32788r22fwjfw\katch.cmd
  • C:\32788r22fwjfw\kill-all.cmd
  • C:\32788r22fwjfw\nd_.bat
  • C:\32788r22fwjfw\nt-os.cmd
  • C:\32788r22fwjfw\moveit.bat
  • C:\32788r22fwjfw\list-d.bat
  • C:\32788r22fwjfw\license\dumphive-license.txt
  • C:\32788r22fwjfw\license\extract.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\delclsid.bat
  • C:\32788r22fwjfw\delclsid64.bat
  • C:\32788r22fwjfw\find3m.bat
  • C:\32788r22fwjfw\fixlsp.bat
  • C:\32788r22fwjfw\history.bat
  • C:\32788r22fwjfw\lang.bat
  • C:\32788r22fwjfw\list-b.bat
  • C:\32788r22fwjfw\list-c.bat
  • C:\32788r22fwjfw\list.bat
  • C:\32788r22fwjfw\w2k_sock.dll
  • C:\32788r22fwjfw\nircmdc.cfxxe
  • C:\32788r22fwjfw\regscan64.cmd
  • C:\32788r22fwjfw\appinit.bad
  • C:\32788r22fwjfw\aspackdie.cfxxe
  • C:\32788r22fwjfw\catchme.cfxxe
  • C:\32788r22fwjfw\combofix-download.cfxxe
  • 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\handle.cfxxe
  • C:\32788r22fwjfw\mbr.cfxxe
  • C:\32788r22fwjfw\mtee.cfxxe
  • C:\32788r22fwjfw\license\ncmd.cfxxe
  • C:\32788r22fwjfw\ncmd.cfxxe
  • C:\32788r22fwjfw\nircmd.cfxxe
  • C:\32788r22fwjfw\vinfo
  • C:\32788r22fwjfw\sed.cfxxe
  • C:\32788r22fwjfw\combo-fix.sys
  • C:\32788r22fwjfw\w_sock.dll
  • C:\32788r22fwjfw\rkey.cmd
  • C:\32788r22fwjfw\snapshot.cmd
  • C:\32788r22fwjfw\srestore.cmd
  • C:\32788r22fwjfw\suppscan.cmd
  • C:\32788r22fwjfw\update-cf.cmd
  • C:\32788r22fwjfw\badclsid.c
  • 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\bootsect.dll
  • C:\32788r22fwjfw\ffdefstr.dll
  • C:\32788r22fwjfw\forcelibrary.dll
  • C:\32788r22fwjfw\p.cmd
  • C:\32788r22fwjfw\n_\21536
Deletes the following files
  • C:\32788r22fwjfw\winnt00
  • C:\32788r22fwjfw\osver00
Modifies the following files
  • %LOCALAPPDATA%\microsoft\windows\explorer\explorerstartuplog_runonce.etl
Miscellaneous
Searches for the following windows
  • ClassName: 'EDIT' WindowName: ''
Creates and executes the following
  • 'C:\32788r22fwjfw\iexplore.exe' win close ititle " Security"
  • 'C:\32788r22fwjfw\nircmd.cfxxe' shellcopy <SYSTEM32>\en-us\cmd.exe.mui 32788R22FWJFW\EN-US\cmd.cfxxe.mui yestoall noerrorui silent nosecattr
  • 'C:\32788r22fwjfw\swreg.exe' acl "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers32" /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\nircmd.cfxxe' cmdwait 1700 exec hide "32788R22FWJFW\cmd.cfxxe" /c 32788R22FWJFW\p.cmd
  • 'C:\32788r22fwjfw\cmd.cfxxe' /c 32788R22FWJFW\p.cmd
  • 'C:\32788r22fwjfw\n.pif' cmdwait 2500 exec hide "32788R22FWJFW\cmd.cfxxe" /c 32788R22FWJFW\p.cmd
  • 'C:\32788r22fwjfw\grep.cfxxe' -F "5.1.2" OsVer
  • 'C:\32788r22fwjfw\grep.cfxxe' -F "6.0.6" OsVer
  • 'C:\32788r22fwjfw\grep.cfxxe' -F "6.1.7600" OsVer
  • 'C:\32788r22fwjfw\swreg.exe' QUERY "hklm\software\microsoft\windows nt\currentversion" /v currentversion
  • 'C:\32788r22fwjfw\grep.cfxxe' -is "currentversion.* 6.[01]" OsVer00
  • 'C:\32788r22fwjfw\swreg.exe' QUERY "HKLM\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_{79007602-0CDB-4405-9DBF-1257BB3226ED}\0000\Control" /v ActiveService
  • 'C:\32788r22fwjfw\nircmd.cfxxe' WIN CLOSE CLASS "#32770"
  • 'C:\32788r22fwjfw\swreg.exe' QUERY "HKLM\System\Currentcontrolset\Control\ProductOptions" /v ProductType
  • 'C:\32788r22fwjfw\grep.cfxxe' -isq "ProductType.*WinNT" WinNT00
  • 'C:\32788r22fwjfw\pev.exe' PLIST
  • 'C:\32788r22fwjfw\grep.cfxxe' -Fis "<SYSTEM32>\csrss.exe"
  • 'C:\32788r22fwjfw\swreg.cfxxe' ACL "HKLM\Software\Microsoft\Windows NT\CurrentVersion\Windows" /RESET /Q
  • 'C:\32788r22fwjfw\n.pif' shellcopy <SYSTEM32>\en-us\cmd.exe.mui 32788R22FWJFW\EN-US\cmd.cfxxe.mui yestoall noerrorui silent nosecattr
  • 'C:\32788r22fwjfw\swreg.cfxxe' ACL "HKLM\Software\Microsoft\Windows NT\CurrentVersion\Windows" /RO:F /RA:F /Q
  • 'C:\32788r22fwjfw\n.pif' cmdwait 3000 exec hide 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\iexplore.exe' win close ititle "SysInternals"
  • 'C:\32788r22fwjfw\iexplore.exe' exec hide 32788R22FWJFW\License\iexplore.exe -k *sysguard.exe
  • 'C:\32788r22fwjfw\hidec.exe' 32788R22FWJFW\pev.exe -k * and { *Antivirus*Pro.exe or *Police*Pro.exe or svch[!o]st.exe or sv[!c]host.exe or winupdate.exe or or ANTI_files.exe or dbsinit.exe or ?.exe or desot.exe or desote.e...
  • 'C:\32788r22fwjfw\license\iexplore.exe' -k *sysguard.exe
  • 'C:\32788r22fwjfw\n.pif' shexec install 32788R22FWJFW\Prep.inf
  • 'C:\32788r22fwjfw\pev.exe' -k * and { *Antivirus*Pro.exe or *Police*Pro.exe or svch[!o]st.exe or sv[!c]host.exe or winupdate.exe or or ANTI_files.exe or dbsinit.exe or ?.exe or desot.exe or desote.exe or *sysguard.exe or...
  • 'C:\32788r22fwjfw\n.pif' exec hide 32788R22FWJFW\PEV.exe RIMPORT 32788R22FWJFW\EXE.reg
  • 'C:\32788r22fwjfw\pev.exe' RIMPORT 32788R22FWJFW\EXE.reg
  • 'C:\32788r22fwjfw\hidec.exe' 32788R22FWJFW\PEV.exe RIMPORT 32788R22FWJFW\EXE.reg
  • 'C:\32788r22fwjfw\hidec.exe' 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\hidec.exe' 32788R22FWJFW\swreg.exe acl "HKLM\SOFTWARE\Microsoft\Command Processor" /reset /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\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\swxcacls.cfxxe' "<SYSTEM32>\cmd.exe" /P /GA:F /GS:F /GU:X /GP:X /I ENABLE /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\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" /DE:F /Q
  • 'C:\32788r22fwjfw\nircmd.cfxxe' infobox "Incompatible OS. ComboFix only works for workstations with Windows 2000 and XP~n~nOS incompatible. ComboFix ne fonctionne que pour Windows 2000 et XP~n~nOS niet compatibel. ComboFix ka...
Executes the following
  • '%WINDIR%\syswow64\infdefaultinstall.exe' "C:\32788R22FWJFW\Prep.inf"
  • '%WINDIR%\syswow64\runonce.exe' -r
  • '%WINDIR%\syswow64\grpconv.exe' -o
  • '%WINDIR%\syswow64\chcp.com' 1252
  • 'C:\32788r22fwjfw\license\iexplore.exe' -k *sysguard.exe' (with hidden window)
  • 'C:\32788r22fwjfw\pev.exe' -k * and { *Antivirus*Pro.exe or *Police*Pro.exe or svch[!o]st.exe or sv[!c]host.exe or winupdate.exe or or ANTI_files.exe or dbsinit.exe or ?.exe or desot.exe or desote.exe or *sysguard.exe or...' (with hidden window)
  • 'C:\32788r22fwjfw\pev.exe' RIMPORT 32788R22FWJFW\EXE.reg' (with hidden window)
  • 'C:\32788r22fwjfw\swreg.exe' acl "HKLM\SOFTWARE\Microsoft\Command Processor" /reset /q' (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\Drivers32" /da:r /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\windows" /O Guest /Q' (with hidden window)
  • 'C:\32788r22fwjfw\swreg.exe' acl "hklm\software\microsoft\windows nt\currentversion\windows" /DE:F /Q' (with hidden window)
  • 'C:\32788r22fwjfw\swreg.exe' acl "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers32" /reset /q' (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\cmd.cfxxe' /c 32788R22FWJFW\p.cmd' (with hidden window)

Curing recommendations

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  1. If the mobile device is operating normally, download and install Dr.Web for Android. Run a full system scan and follow recommendations to neutralize the detected threats.
  2. If the mobile device has been locked by Android.Locker ransomware (the message on the screen tells you that you have broken some law or demands a set ransom amount; or you will see some other announcement that prevents you from using the handheld normally), do the following:
    • Load your smartphone or tablet in the safe mode (depending on the operating system version and specifications of the particular mobile device involved, this procedure can be performed in various ways; seek clarification from the user guide that was shipped with the device, or contact its manufacturer);
    • Once you have activated safe mode, install the Dr.Web for Android onto the infected handheld and run a full scan of the system; follow the steps recommended for neutralizing the threats that have been detected;
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