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Win32.HLLM.Dref.79
Added to the Dr.Web virus database:
2013-10-28
Virus description added:
2013-10-28
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'DrefIW' = '<SYSTEM32>\SysDrefIWv2.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'DrefIW' = '<SYSTEM32>\SysDrefIWv2.exe'
Malicious functions:
Executes the following:
'<SYSTEM32>\ntvdm.exe' -f -i1
Terminates or attempts to terminate
the following user processes:
fsavgui.exe
AVPM.EXE
AVPCC.EXE
ZONEALARM.EXE
nod32.exe
NAVAPW32.EXE
AVGCTRL.EXE
AVGCC32.EXE
avgcc.exe
AVP32.EXE
AVP.EXE
AVP.COM
Modifies file system :
Creates the following files:
%WINDIR%\Temp\scs1.tmp
%WINDIR%\Temp\scs2.tmp
%TEMP%\c05L0uk.tmp
<SYSTEM32>\SysDrefIWv2.exe
%WINDIR%\vlg.exe
Sets the 'hidden' attribute to the following files:
<SYSTEM32>\SysDrefIWv2.exe
Deletes the following files:
%WINDIR%\Temp\scs2.tmp
%WINDIR%\Temp\scs1.tmp
%TEMP%\c05L0uk.tmp
Network activity:
Connects to:
'eu.##dernet.org':6667
'ir#.##akenet.org':6667
'ir#.#izon.net':6667
'74.##5.232.51':80
'ir#.#fnet.net':6667
'ir#.dal.net':6667
UDP:
DNS ASK ir#.##.ircnet.net
DNS ASK ir#.#izon.net
DNS ASK ir#.#rcnet.ee
DNS ASK us.##dernet.org
DNS ASK ir#.##akenet.org
DNS ASK ir#.#fnet.net
DNS ASK www.google.com
DNS ASK eu.##dernet.org
DNS ASK ir#.dal.net
Miscellaneous:
Searches for the following windows:
ClassName: 'ConsoleWindowClass' WindowName: 'ntvdm-b6c.b70.380001'
ClassName: '(null)' WindowName: 'Registry Editor'
ClassName: 'Indicator' WindowName: '(null)'
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