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Win32.HLLW.Siggen.8980

Added to the Dr.Web virus database: 2017-01-01

Virus description added:

Technical Information

To ensure autorun and distribution
Creates or modifies the following files
  • <LS_APPDATA>\start\update_backup.exe
  • <LS_APPDATA>\start\rcx2944.tmp
Creates the following files on removable media
  • <Drive name for removable media>:\bloc-notes.exe
Malicious functions
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
  • file extensions
Modifies file system
Creates the following files
  • %TEMP%\uphwlmc.resources
  • %TEMP%\edam3q-f.0.vb
  • %TEMP%\xrzfrk.resources
  • %TEMP%\gnhpyy.resources
  • %TEMP%\windowsupdate.ico
  • %TEMP%\res2713.tmp
  • %TEMP%\vbc26f2.tmp
  • %TEMP%\n63t3tkh.out
  • %TEMP%\n63t3tkh.cmdline
  • %TEMP%\n63t3tkh.0.vb
  • %TEMP%\whatdafock.txt
  • %TEMP%\jp.resources
  • %TEMP%\lbr.resources
  • %TEMP%\apvvdv0-.exe
  • %TEMP%\res1ce1.tmp
  • %TEMP%\vbc1cd1.tmp
  • %TEMP%\apvvdv0-.out
  • %TEMP%\apvvdv0-.cmdline
  • %TEMP%\apvvdv0-.0.vb
  • %TEMP%\msnpsharp.dll
  • %TEMP%\8h425w.resources
  • <LS_APPDATA>\start\update.exe
  • %TEMP%\svchost.exe
  • %TEMP%\update.exe
  • %TEMP%\edam3q-f.cmdline
  • %TEMP%\edam3q-f.out
Deletes the following files
  • %TEMP%\res1ce1.tmp
  • %TEMP%\edam3q-f.cmdline
  • %TEMP%\edam3q-f.out
  • %TEMP%\edam3q-f.0.vb
  • <LS_APPDATA>\start\update.exe
  • %TEMP%\windowsupdate.ico
  • %TEMP%\jp.resources
  • %TEMP%\lbr.resources
  • %TEMP%\n63t3tkh.out
  • %TEMP%\n63t3tkh.cmdline
  • %TEMP%\n63t3tkh.0.vb
  • %TEMP%\vbc26f2.tmp
  • %TEMP%\res2713.tmp
  • %TEMP%\apvvdv0-.exe
  • %TEMP%\apvvdv0-.0.vb
  • %TEMP%\apvvdv0-.out
  • %TEMP%\apvvdv0-.cmdline
  • %TEMP%\vbc1cd1.tmp
  • %TEMP%\gnhpyy.resources
  • %TEMP%\xrzfrk.resources
Network activity
Connects to
  • '17#.#3.169.14':80
Miscellaneous
Creates and executes the following
  • '%TEMP%\update.exe'
  • '%TEMP%\svchost.exe'
  • '%WINDIR%\microsoft.net\framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\apvvdv0-.cmdline"' (with hidden window)
  • '%WINDIR%\microsoft.net\framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES1CE1.tmp" "%TEMP%\vbc1CD1.tmp"' (with hidden window)
  • '%WINDIR%\microsoft.net\framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\n63t3tkh.cmdline"' (with hidden window)
  • '%WINDIR%\microsoft.net\framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES2713.tmp" "%TEMP%\vbc26F2.tmp"' (with hidden window)
  • '%WINDIR%\microsoft.net\framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\edam3q-f.cmdline"' (with hidden window)
  • '%WINDIR%\microsoft.net\framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES782C.tmp" "%TEMP%\vbc780B.tmp"' (with hidden window)
Executes the following
  • '%WINDIR%\microsoft.net\framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\apvvdv0-.cmdline"
  • '%WINDIR%\microsoft.net\framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES1CE1.tmp" "%TEMP%\vbc1CD1.tmp"
  • '%WINDIR%\microsoft.net\framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\n63t3tkh.cmdline"
  • '%WINDIR%\microsoft.net\framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES2713.tmp" "%TEMP%\vbc26F2.tmp"
  • '%WINDIR%\microsoft.net\framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\edam3q-f.cmdline"
  • '%WINDIR%\microsoft.net\framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES782C.tmp" "%TEMP%\vbc780B.tmp"

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