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Win32.HLLW.Autoruner.51440
Added to the Dr.Web virus database:
2011-06-07
Virus description added:
2011-06-14
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pexig' = '%HOMEPATH%\pexig.exe /N'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pexig' = '%HOMEPATH%\pexig.exe /g'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pexig' = '%HOMEPATH%\pexig.exe /h'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pexig' = '%HOMEPATH%\pexig.exe /r'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pexig' = '%HOMEPATH%\pexig.exe /E'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pexig' = '%HOMEPATH%\pexig.exe /f'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pexig' = '%HOMEPATH%\pexig.exe /S'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pexig' = '%HOMEPATH%\pexig.exe /M'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pexig' = '%HOMEPATH%\pexig.exe /W'
[<HKLM>\SYSTEM\ControlSet001\Control\Print\Providers\612845112] 'Name' = '"%TEMP%\3.tmp"'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pexig' = '%HOMEPATH%\pexig.exe /J'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pexig' = '%HOMEPATH%\pexig.exe /T'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pexig' = '%HOMEPATH%\pexig.exe /x'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pexig' = '%HOMEPATH%\pexig.exe /D'
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>:\bXY.ico
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\pexig.exe
<Drive name for removable media>:\New Folder.lnk
<Drive name for removable media>:\pexigx.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%\zupnat.exe
%HOMEPATH%\pexig.exe
%HOMEPATH%\zb.exe
%HOMEPATH%\z57NKbOO86bDWSl3O4.exe
%HOMEPATH%\za.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:
%HOMEPATH%\pexig.exe
%TEMP%\2.tmp
%TEMP%\Rlb..bat
%WINDIR%\Temp\4.tmp
%HOMEPATH%\za.exe
%HOMEPATH%\z57NKbOO86bDWSl3O4.exe
%HOMEPATH%\zupnat.exe
%HOMEPATH%\zb.exe
Sets the 'hidden' attribute to the following files:
<Drive name for removable media>:\pexig.exe
<Drive name for removable media>:\pexigx.exe
<Drive name for removable media>:\bXY.ico
%HOMEPATH%\pexig.exe
<Drive name for removable media>:\autorun.inf
Deletes the following files:
%HOMEPATH%\z57NKbOO86bDWSl3O4.exe
%HOMEPATH%\zb.exe
%WINDIR%\Temp\4.tmp
%TEMP%\3.tmp
<DRIVERS>\etc\hosts
Network activity:
Connects to:
'ri##rose.in':80
'ap#.#ostip.info':80
'74.##5.232.51':80
TCP:
HTTP GET requests:
ap#.#ostip.info/country.php
74.##5.232.51/
HTTP POST requests:
ri##rose.in/90ds8c9ds8c9d0s8cds.php?in##############################################################################################################
UDP:
DNS ASK da##.net
DNS ASK ap#.#ostip.info
DNS ASK ri##rose.in
DNS ASK ti##pic.com
DNS ASK ma##h.com
DNS ASK google.com
Miscellaneous:
Searches for the following windows:
ClassName: 'Indicator' WindowName: ''
ClassName: 'MS_WebcheckMonitor' WindowName: ''
ClassName: 'MS_AutodialMonitor' WindowName: ''
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