Sophos

Troj/Zlob-JO

Aliases
  • Trojan-Downloader.Win32.Zlob.nz
  • Puper
  • Trojan.Downloader.Zlob-436
  • Virus
  • [TROJ_ZLOB.GEN]
Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Protection available since 11 May 2006 13:54:58 (GMT)
Detected by All Sophos products
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Action

More Information

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

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

<System>\hp[random].tmp
<System>\simpole.tlb
<System>\stdole3.tlb

The file hp[random].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-JO 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 Objecta\(b0398eca-0bcd-4645-8261-5e9dc70248d0)\

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

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

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