Technical Information
To ensure autorun and distribution:
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\svchost.exe
Malicious functions:
Creates and executes the following:
- '%TEMP%\svchost.exe'
- '%TEMP%\utorrent.exe'
Executes the following:
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES3.tmp" "%TEMP%\vbc2.tmp"
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\jl4muevh.cmdline"
Modifies file system:
Creates the following files:
- %APPDATA%\Microsoft\Protect\CREDHIST
- %APPDATA%\Microsoft\Crypto\RSA\S-1-5-21-2052111302-484763869-725345543-1003\1f91d2d17ea675d4c2c3192e241743f9_23ef5514-3059-436f-a4a7-4cefaab20eb1
- %HOMEPATH%\Cookies\%USERNAME%@localhost[1].txt
- %APPDATA%\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
- %APPDATA%\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
- %TEMP%\Cab4.tmp
- %HOMEPATH%\Cookies\%USERNAME%@localhost[2].txt
- %TEMP%\utt7.tmp.new
- %APPDATA%\uTorrent\toolbar.benc.new
- %TEMP%\t2q0
- %APPDATA%\uTorrent\settings.dat.new
- %TEMP%\jl4muevh.exe
- %APPDATA%\Microsoft\CryptnetUrlCache\Content\2BF68F4714092295550497DD56F57004
- %TEMP%\utt1.tmp.new
- %TEMP%\F346s08ep.resources
- %TEMP%\MSNPSharp.dll
- %TEMP%\zyDQdxi.resources
- %TEMP%\svchost.exe
- %TEMP%\utorrent.exe
- %TEMP%\vbc2.tmp
- %TEMP%\RES3.tmp
- %APPDATA%\Microsoft\CryptnetUrlCache\MetaData\2BF68F4714092295550497DD56F57004
- %TEMP%\jl4muevh.0.vb
- %TEMP%\jl4muevh.cmdline
- %TEMP%\jl4muevh.out
Deletes the following files:
- %TEMP%\jl4muevh.cmdline
- %TEMP%\jl4muevh.0.vb
- %HOMEPATH%\Cookies\%USERNAME%@localhost[1].txt
- %TEMP%\jl4muevh.out
- %TEMP%\jl4muevh.exe
- %TEMP%\utt1.tmp
- %TEMP%\Cab4.tmp
- %TEMP%\vbc2.tmp
- %TEMP%\RES3.tmp
Moves the following files:
- from %TEMP%\utt7.tmp.new to %TEMP%\utt7.tmp
- from %APPDATA%\uTorrent\toolbar.benc.new to %APPDATA%\uTorrent\toolbar.benc
- from %TEMP%\utt1.tmp.new to %TEMP%\utt1.tmp
- from %APPDATA%\uTorrent\settings.dat.new to %APPDATA%\uTorrent\settings.dat
Network activity:
Connects to:
- 'up####.utorrent.com':80
- 'localhost':1047
- '17#.#3.169.14':80
- 'wp#d':80
- 'www.download.windowsupdate.com':80
- 'be###.utorrent.com':80
TCP:
HTTP GET requests:
- http://up####.utorrent.com/installoffer.php?h=#############################################################################################################
- http://up####.utorrent.com/installstats.php?cl###############################################################################################################################
- http://up####.utorrent.com/installstats.php?cl###################################################################################################################################################...
- http://11#.#11.111.1/wpad.dat via wp#d
- http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootseq.txt
- http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab
HTTP POST requests:
- http://be###.utorrent.com/e?i=##
UDP:
- DNS ASK be###.utorrent.com
- DNS ASK ro####.bittorrent.com
- DNS ASK up####.utorrent.com
- DNS ASK wp#d
- DNS ASK www.download.windowsupdate.com
- DNS ASK ro####.utorrent.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: 'µTorrent4823DF041B09' WindowName: ''
- ClassName: '?Torrent4823DF041B09' WindowName: ''
