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Troj/Dloader-GL

Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Protection available since 17 January 2005 22:12:32 (GMT)
Detected by All Sophos products
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Action

More Information

Troj/Dloader-GL is a Trojan which downloads and runs files without the user's consent.

The Trojan downloads and runs files from a remote website, storing them as any of the following files:

<system>\vxh8jkdq5.exe
<system>\vxh8jkdq2.exe
<system>\vxh8jkdq1.exe
<temp>\1.qtdfmp
<temp>\2.qtdfmp
<temp>\3.qtdfmp
<temp>\4.qtdfmp
<temp>\5.qtdfmp

Troj/Dloader-GL adds the following text to the HOSTS file in order to block access to the given websites:

127.0.0.3 www.iframedollars.biz
127.0.0.3 iframedollars.biz
127.0.0.3 www.virgin-tgp.net
127.0.0.3 aaasexypics.com
127.0.0.3 www.aaasexypics.com
127.0.0.3 www.pizdato.biz
127.0.0.3 www.newiframe.biz
127.0.0.3 www.allforadult.com
127.0.0.3 allforadult.com
127.0.0.3 awmdabest.com
127.0.0.3 www.sexfiles.nu
127.0.0.3 www.awmdabest.com
127.0.0.3 www.autoescrowpay.com
127.0.0.3 counter.sexmaniack.com
127.0.0.3 autoescrowpay.com

The Trojan terminates processes with any of the following names:

actalert.exe
alchem.exe
bargains.exe
exdl.exe
fnnmqi.exe
host32.exe
iinstall.exe
Installer2.exe
intron.exe
intronet.exe
ir.exe
istsvc.exe
lpt.exe
optimize.exe
powerscan.exe
printer.exe
printer32.exe
sidefind.exe
systime.exe
telnet.exe
teur.exe
ttgkirnl.exe
usb.exe
Winad.exe
WinClt.exe
ykyrtws.exe

The Trojan attempts to delete the following files:

<system>\com.exe
<system>\dktibs.exe
<system>\exdl.exe
<system>\exe2bin.exe
<system>\exul.exe
<system>\fastopen.exe
<system>\fnnmqi.exe
<system>\host32.exe
<system>\intron.exe
<system>\intronet.exe
<system>\ir.exe
<system>\lpt.exe
<system>\mouse.exe
<system>\mscdexnt.exe
<system>\printer32.exe
<system>\systime.exe
<system>\telnet.exe.tmp
<system>\twink64.exe
<system>\usb.exe
<system>\ykyrtws.exe
<temp>\bdl74125.exe
<temp>\Installer2.exe
<temp>\msbb.exe
<windows>\adp8027_ISEARCHTECH5.exe
<windows>\alchem.exe
<windows>\preInMPP.exe
<windows>\preInsln.exe
<windows>\preInsTT.exe
C:\Program Files\WebSiteViewer\125209.exe

The Trojan copies itself to KERNELS32.EXE in the system folder and sets the following registry entries in order to run itself on system startup:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run
System
<system>\kernels32.exe

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
Shell
Explorer.exe <system>\kernels32.exe

The Trojan makes the following additional registry changes:

HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\209.8.20.130\
*
4

HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\213.159.117.133\
*
4

HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System
DisableTaskMgr
1

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\209.8.20.130\
*
4

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\213.159.117.133\
*
4

The Trojan attempts to delete registry entries in the location HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run with any of the following values:

180ax
alchem
BullsEye Network
CashBack
ControlPanel
Internet Optimizer
IST Service
Power Scan
SysTime
twink64.exe
Ukbybc
Winad Client

The Trojan attempts to delete registry entries in the location HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run with any of the following values:

SysTime
twink64.exe
Usoa

The Trojan may delete the following registry entry:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
InternetExplorer6.0

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