Win32.HLLW.Autoruner.51500

Added to the Dr.Web virus database: 2011-06-07

Virus description added: 2011-06-14

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'msngms' = '%WINDIR%\Messenger\MSN21.exe'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'opesys' = '%WINDIR%\Messenger\propagador.exe'

Creates the following files on removable media:

Malicious functions:

Executes the following:

<SYSTEM32>\reg.exe add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /v msngms /t REG_SZ /d "%WINDIR%\Messenger\MSN21.exe" /f
<SYSTEM32>\reg.exe add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /v opesys /t REG_SZ /d "%WINDIR%\Messenger\propagador.exe" /f
<SYSTEM32>\attrib.exe +h +s +R <Drive name for removable media>:\Autorun.inf
<SYSTEM32>\attrib.exe +h +s +R F:\Autorun.inf
<SYSTEM32>\attrib.exe +h +s +R E:\Autorun.inf
<SYSTEM32>\ping.exe -n 15 localhost
%WINDIR%\explorer.exe /E,\
<SYSTEM32>\ping.exe -n 10 localhost
<SYSTEM32>\xcopy.exe MSN21.exe "%WINDIR%\Messenger" /H/Y
<SYSTEM32>\xcopy.exe propagador.exe "%WINDIR%\Messenger" /H/Y

Modifies file system :

Creates the following files:

Sets the 'hidden' attribute to the following files:

Miscellaneous:

Searches for the following windows: