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Mythen

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Win32.HLLW.Autoruner.2923

Added to the Dr.Web virus database: 2012-08-09

Virus description added: 2012-08-30

Technical Information

To ensure autorun and distribution:

Infects the following executable system files:

<DRIVERS>\beep.sys

Substitutes the following executable system files:

<SYSTEM32>\dllcache\beep.sys with <SYSTEM32>\dllcache\beep.sys.new

Creates the following files on removable media:

<Drive name for removable media>:\AUTORUN.INF
<Drive name for removable media>:\MSKS.PIF

Malicious functions:

Creates and executes the following:

<SYSTEM32>\113.pif

Executes the following:

<SYSTEM32>\net1.exe stop "Norton AntiVirus Server"
<SYSTEM32>\cacls.exe <SYSTEM32>\packet.dll /e /p everyone:f
<SYSTEM32>\cacls.exe <SYSTEM32>\pthreadVC.dll /e /p everyone:f
<SYSTEM32>\net.exe stop "Norton AntiVirus Server"
<SYSTEM32>\net1.exe stop "Symantec AntiVirus Definition Watcher"
<SYSTEM32>\net1.exe stop "McAfee Framework ·юОс"
<SYSTEM32>\cacls.exe <DRIVERS>\acpidisk.sys /e /p everyone:f
<SYSTEM32>\cacls.exe <SYSTEM32>\wanpacket.dll /e /p everyone:f
<SYSTEM32>\cacls.exe %ALLUSERSPROFILE%\ЎёїЄКјЎ№ІЛµҐ\іМРт\Жф¶Ї /e /p everyone:f
<SYSTEM32>\cacls.exe <SYSTEM32>\wpcap.dll /e /p everyone:f
<SYSTEM32>\cacls.exe <DRIVERS>\npf.sys /e /p everyone:f
<SYSTEM32>\cacls.exe <SYSTEM32>\npptools.dll /e /p everyone:f
<SYSTEM32>\net1.exe stop McShield
<SYSTEM32>\net.exe stop "Symantec AntiVirus"
<SYSTEM32>\net1.exe stop KWhatchsvc
<SYSTEM32>\net.exe stop McShield
<SYSTEM32>\net.exe stop KWhatchsvc
<SYSTEM32>\net.exe stop KPfwSvc
<SYSTEM32>\net1.exe stop "Symantec AntiVirus"
<SYSTEM32>\net.exe stop "McAfee Framework ·юОс"
<SYSTEM32>\net1.exe stop "Symantec AntiVirus Drivers Services"
<SYSTEM32>\net.exe stop "Symantec AntiVirus Drivers Services"
<SYSTEM32>\net1.exe stop KPfwSvc
<SYSTEM32>\net.exe stop "Symantec AntiVirus Definition Watcher"

Terminates or attempts to terminate

the following user processes:

AVP.EXE
360tray.exe

Modifies file system :

Creates the following files:

<SYSTEM32>\explorer.exe
C:\MSKS.PIF
C:\AUTORUN.INF
<SYSTEM32>\wauc11.exe
<SYSTEM32>\113.pif
<SYSTEM32>\dllcache\beep.sys.new
<SYSTEM32>\MFCN4212d.DLL

Sets the 'hidden' attribute to the following files:

<Drive name for removable media>:\AUTORUN.INF
C:\AUTORUN.INF
<Full path to virus>

Deletes the following files:

<SYSTEM32>\113.pif

Miscellaneous:

Searches for the following windows:

ClassName: 'Shell_TrayWnd' WindowName: ''
ClassName: '' WindowName: ''