Sophos

Troj/Zlob-IK

Aliases
  • Win32/TrojanDownloader.Zlob.MJ
Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Protection available since 27 April 2006 20:38:12 (GMT)
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Action

More Information

Troj/Zlob-IK is a Trojan for the Windows platform.

Troj/Zlob-IK changes Start Page and search settings for Microsoft Internet Explorer. Troj/Zlob-IK is a Trojan for the Windows platform.

When Troj/Zlob-IK is installed the following files are created:

<Windows system folder>\simpole.tlb
<Windows system folder>\hp<rnd>.tmp

where <rnd> is a randomly generated string of characters. These files are also detected as Troj/Zlob-IK.

The file hp<rnd>.tmp is registered as a COM object and Browser Helper Object (BHO) for Microsoft Internet Explorer, creating registry entries under:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper
Objects\{b0398eca-0bcd-4645-8261-5e9dc70248d0}
HKCR\CLSID\{B0398ECA-0BCD-4645-8261-5E9DC70248D0}

Troj/Zlob-IK changes Start Page and search settings for Microsoft Internet
Explorer by modifying values under:

HKCU\Software\Microsoft\Internet Explorer\Search\
HKCU\Software\Microsoft\Internet Explorer\Main\Start Page

Registry entries are set as follows:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper
Objects\{b0398eca-0bcd-4645-8261-5e9dc70248d0}\

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper
Objects\{b0398eca-0bcd-4645-8261-5e9dc70248d0}\(default)

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\explorer\run
dcomcfg.exe
dcomcfg.exe

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