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Win32.HLLW.Siggen.6418
Added to the Dr.Web virus database:
2016-08-29
Virus description added:
2016-08-29
Technical Information
To ensure autorun and distribution:
Creates or modifies the following files:
<LS_APPDATA>\Start\RCX5.tmp
<LS_APPDATA>\Start\update_backup.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
hidden files
file extensions
Executes the following:
'%WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES2.tmp" "%TEMP%\vbc1.tmp"
'%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\za8a-yfk.cmdline"
'%WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES4.tmp" "%TEMP%\vbc3.tmp"
'%TEMP%\update.exe'
'%TEMP%\svchost.exe'
'%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\hewo59sp.cmdline"
Modifies file system:
Creates the following files:
%TEMP%\whatdafock.txt
%TEMP%\za8a-yfk.0.vb
%TEMP%\GVQpFjSd.resources
%TEMP%\hewo59sp.exe
%TEMP%\r.resources
%TEMP%\RES4.tmp
%TEMP%\windowsupdate.ico
%TEMP%\vbc3.tmp
%TEMP%\za8a-yfk.cmdline
%TEMP%\za8a-yfk.out
%TEMP%\RES2.tmp
<LS_APPDATA>\Start\update.exe
%TEMP%\Q67xe833.resources
%TEMP%\svchost.exe
%TEMP%\VqhTfoWP.resources
%TEMP%\update.exe
%TEMP%\hewo59sp.out
%TEMP%\vbc1.tmp
%TEMP%\hewo59sp.cmdline
%TEMP%\MSNPSharp.dll
%TEMP%\hewo59sp.0.vb
Deletes the following files:
%TEMP%\za8a-yfk.0.vb
%TEMP%\r.resources
%TEMP%\za8a-yfk.cmdline
%TEMP%\za8a-yfk.out
%TEMP%\windowsupdate.ico
<LS_APPDATA>\Start\update.exe
%TEMP%\GVQpFjSd.resources
<LS_APPDATA>\Start\update_backup.exe
%TEMP%\hewo59sp.exe
%TEMP%\hewo59sp.cmdline
%TEMP%\RES2.tmp
%TEMP%\vbc1.tmp
%TEMP%\RES4.tmp
%TEMP%\vbc3.tmp
%TEMP%\hewo59sp.0.vb
%TEMP%\hewo59sp.out
Miscellaneous:
Searches for the following windows:
ClassName: 'Shell_TrayWnd' WindowName: ''
ClassName: '' WindowName: ''
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