Sophos

Troj/GrayBir-EW

Aliases
  • BKDR_GRAYBIRD.UL
Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Included in our products from May 2007 (4.17)
Protection available since 8 April 2007 20:14:13 (GMT)
Detected by All Sophos products

Action

More Information

Troj/GrayBir-EW is a Trojan for the Windows platform.

Troj/GrayBir-EW includes functionality to
 - access the internet and communicate with a remote server via HTTP.
 - download, install and run new software.

When Troj/GrayBir-EW is installed the following files are created:

<Windows>\0a00bd5f96a30fef.exe
<Windows>\9bb2ebfdf2888e8d.exe
<System>\39672ea4.dll
<System>\39672ea4.exe
<System>\988b652c.exe
<System>\delme.bat

The file delme.bat is clean and can be deleted. All other dropped files are also detected as Troj/GrayBir-EW

The file 39672EA4.EXE is registered as a new system driver service named "39672EA4", with a display name of "39672EA4" and a startup type of automatic, so that it is started automatically during system startup. Registry entries are created under:

HKLM\SYSTEM\CurrentControlSet\Services\39672EA4

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