Sophos

W32/Feebs-CB

Category
Type
What to do
Prevalence low high

Summary

 
How it spreads
  • Peer-to-peer
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Included in our products from April 2008 (4.28)
Protection available since 9 February 2008 03:08:01 (GMT)
Detected by All Sophos products

Action

More Information

W32/Feebs-CB is a worm for the Windows platform.

When first run W32/Feebs-CB copies itself to:

<System>\ms??.exe
<System>\ms??
where ?? are randomly chosen letters.

and creates the following file:
<System>\ms??32.dll
MS??32.dll is also detected as W32/Feebs-CB.

The file ms??32.dll is registered as a COM object, creating registry entries under:

HKCR\CLSID\{<randomly generated CLSID>}

The following registry entry is created to run code exported by ms??32.dll on startup:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad
ms??32.dll
{<randomly generated CLSID>}

Registry entries are also created under:

HKLM\SOFTWARE\Microsoft\MS??
where ?? are more randomly chosen letters

In order to spread across peer to peer networks the worm creates the following files in various shared folders:

3dsmax_10_(3D_Studio_Max)_new!_full+crack.zip
ACDSee_10_new!_full+crack.zip
Adobe_Photoshop_11_(CS34)_new!_full+crack.zip
Adobe_Premiere_10_(3.0_pro)_new!_full+crack.zip
Ahead_Nero_8_new!_full+crack.zip
DivX_8.0_new!_full+crack.zip
ICQ_2007_new!_full+crack.zip
Internet_Explorer_7_new!_full+crack.zip
Kazaa_4_new!_full+crack.zip
Microsoft_Office_2006_new!_full+crack.zip
Vista_Final_new!_full+crack.zip
winamp_7_new!_full+crack.zip

Sophos's anti-virus products include Behavioral Genotype® Protection, which can proactively guard against new threats without requiring an update. Sophos customers have been protected against W32/Feebs-CB (detected as Mal/Packer) since version 4.20.

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