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Win32.HLLW.Autoruner.55220
Added to the Dr.Web virus database:
2011-07-28
Virus description added:
2011-07-28
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'viyen' = '%HOMEPATH%\viyen.exe /C'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'viyen' = '%HOMEPATH%\viyen.exe /h'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'viyen' = '%HOMEPATH%\viyen.exe /o'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'viyen' = '%HOMEPATH%\viyen.exe /T'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'viyen' = '%HOMEPATH%\viyen.exe /e'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'viyen' = '%HOMEPATH%\viyen.exe /R'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'viyen' = '%HOMEPATH%\viyen.exe /m'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'viyen' = '%HOMEPATH%\viyen.exe /Q'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'viyen' = '%HOMEPATH%\viyen.exe /i'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'viyen' = '%HOMEPATH%\viyen.exe /F'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'viyen' = '%HOMEPATH%\viyen.exe /Y'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'viyen' = '%HOMEPATH%\viyen.exe /z'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'viyen' = '%HOMEPATH%\viyen.exe /p'
[<HKLM>\SYSTEM\ControlSet001\Control\Print\Providers\3501063088] 'Name' = '"%TEMP%\3.tmp"'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'viyen' = '%HOMEPATH%\viyen.exe /b'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'viyen' = '%HOMEPATH%\viyen.exe /A'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'viyen' = '%HOMEPATH%\viyen.exe /K'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'viyen' = '%HOMEPATH%\viyen.exe /s'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'viyen' = '%HOMEPATH%\viyen.exe /J'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'viyen' = '%HOMEPATH%\viyen.exe /l'
Creates the following files on removable media:
<Drive name for removable media>:\Documents.lnk
<Drive name for removable media>:\Passwords.lnk
<Drive name for removable media>:\Pictures.lnk
<Drive name for removable media>:\Video.lnk
<Drive name for removable media>:\Music.lnk
<Drive name for removable media>:\cYu.ico
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\viyen.exe
<Drive name for removable media>:\New Folder.lnk
<Drive name for removable media>:\viyenx.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
Creates and executes the following:
%HOMEPATH%\svc32.exe
%HOMEPATH%\viyen.exe
%HOMEPATH%\ppp.exe
%HOMEPATH%\ppK1Ml6Ir8.exe
%HOMEPATH%\pp.exe
Executes the following:
Injects code into
the following system processes:
Modifies settings of Windows Internet Explorer:
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1400' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1601' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] 'currentlevel' = '00000000'
Modifies file system :
Creates the following files:
%WINDIR%\Temp\4.tmp
%TEMP%\2.tmp
%TEMP%\Rlb..bat
%HOMEPATH%\viyen.exe
%HOMEPATH%\ppK1Ml6Ir8.exe
%HOMEPATH%\pp.exe
%HOMEPATH%\svc32.exe
%HOMEPATH%\ppp.exe
Sets the 'hidden' attribute to the following files:
<Drive name for removable media>:\viyen.exe
<Drive name for removable media>:\viyenx.exe
<Drive name for removable media>:\cYu.ico
%HOMEPATH%\viyen.exe
<Drive name for removable media>:\autorun.inf
Deletes the following files:
%HOMEPATH%\ppK1Ml6Ir8.exe
%HOMEPATH%\ppp.exe
%WINDIR%\Temp\4.tmp
%TEMP%\3.tmp
<DRIVERS>\etc\hosts
Network activity:
Connects to:
'di####lpackpack.in':80
'ap#.#ostip.info':80
TCP:
HTTP GET requests:
ap#.#ostip.info/country.php
HTTP POST requests:
di####lpackpack.in/wekdmxx.php?in##############################################################################################################
UDP:
DNS ASK ho###ay.com.cn
DNS ASK di####lpackpack.in
DNS ASK ap#.#ostip.info
DNS ASK vn###ress.net
DNS ASK ne##og.com
Miscellaneous:
Searches for the following windows:
ClassName: 'Indicator' WindowName: ''
ClassName: 'MS_WebcheckMonitor' WindowName: ''
ClassName: 'MS_AutodialMonitor' WindowName: ''
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