Trojan.DownLoader9.34243

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'st32.exe' = '%TEMP%\st32.exe'

Malicious functions:

Creates and executes the following:

'%TEMP%\st32.exe'
'%TEMP%\svchost.exe'
'%TEMP%\adobe.exe'

Searches for windows to

detect programs and games:

ClassName: 'TibiaClient' WindowName: '(null)'

Modifies file system :

Creates the following files:

%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\buttonLeftHighlight[1].png
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\YPORKZYZ\buttonRightHighlight[1].png
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\YPORKZYZ\buttonCenter[1].png
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\buttonCenter[1].png
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\2VAZY7AN\buttonCenterHighlight[1].png
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\bgDownloadBarEmpty[1].png
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\2VAZY7AN\bgDownloadBarFull[1].png
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\language-en[1].js
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\buttonLeft[1].png
%APPDATA%\Microsoft\CryptnetUrlCache\MetaData\2BF68F4714092295550497DD56F57004
<LS_APPDATA>\Adobe\AIH.c06afa64b92500b1aa702bfc032581d824d57bb7\launcher.bundle.partial
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\bgDownloadBarError[1].png
%APPDATA%\Microsoft\CryptnetUrlCache\Content\2BF68F4714092295550497DD56F57004
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\YPORKZYZ\buttonLeft[1].png
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\buttonLeft[1].png
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\buttonRight[1].png
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\YPORKZYZ\buttonRight[1].png
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\buttonRight[1].png
%APPDATA%\Microsoft\CryptnetUrlCache\MetaData\8DFDF057024880D7A081AFBF6D26B92F
%APPDATA%\Microsoft\CryptnetUrlCache\Content\60E31627FDA0A46932B0E5948949F2A5
%APPDATA%\Microsoft\CryptnetUrlCache\MetaData\62B5AF9BE9ADC1085C3C56EC07A82BF6
%APPDATA%\Microsoft\CryptnetUrlCache\Content\8DFDF057024880D7A081AFBF6D26B92F
%APPDATA%\Microsoft\CryptnetUrlCache\MetaData\60E31627FDA0A46932B0E5948949F2A5
%TEMP%\svchost.exe
%TEMP%\adobe.exe
%TEMP%\n402.dll
%TEMP%\st32.exe
%APPDATA%\Microsoft\CryptnetUrlCache\Content\62B5AF9BE9ADC1085C3C56EC07A82BF6
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\YPORKZYZ\bgHeaderError[1].gif
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\YPORKZYZ\iconError[1].png
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\2VAZY7AN\logoAdobe[1].gif
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\main-merge[1].js
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\2VAZY7AN\iconComplete[1].gif
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\index[1].htm
%APPDATA%\n402.dll
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\iconBlank[1].gif
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\default[1].css

Deletes the following files:

%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\buttonRight[1].png
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\buttonLeft[1].png
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\YPORKZYZ\buttonRight[1].png
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\YPORKZYZ\buttonCenter[1].png
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\buttonCenter[1].png
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\buttonLeft[1].png
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\buttonRight[1].png

Moves the following files:

from <LS_APPDATA>\Adobe\AIH.c06afa64b92500b1aa702bfc032581d824d57bb7\launcher.bundle.partial to <LS_APPDATA>\Adobe\AIH.c06afa64b92500b1aa702bfc032581d824d57bb7\launcher.bundle

Network activity:

Connects to:

'localhost':1039
'localhost':1044
'www.download.windowsupdate.com':80
'localhost':1040
'wp#d':80
'crl.verisign.com':80
'cs######0-crl.verisign.com':80

TCP:

HTTP GET requests:

cs######0-crl.verisign.com/CSC3-2010.crl
www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootseq.txt
crl.verisign.com/pca3-g5.crl
wp#d/wpad.dat
crl.verisign.com/pca3.crl

UDP: