Sophos

Troj/Proxmeg-B

Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Included in our products from October 2005 (3.98)
Protection available since 16 August 2005 04:47:15 (GMT)
Detected by All Sophos products

Action

More Information

Troj/Proxmeg-B is a proxy Trojan with downloader capabilities and may be used to send spam email.

When Troj/Proxmeg-B is installed it creates the file <System>\floop.dll. This file is detected as Troj/Proxmeg-B.

Troj/Proxmeg-B includes functionality to:

- provide a proxy server on port 1080
- access the internet and communicate with a remote server via HTTP
- change internet security settings
- suppress error and warning messages generated by Windows system and security related applications

Troj/Proxmeg-B also has downloading capability and may download files to <Temp>\file.exe.

In order to run the DLL automatically, Troj/Proxmeg-B will set the following registry entries:

HKCR\CLSID\(random classID)\InProcServer32
(default)
<System>\floop.dll

HKCR\CLSID\(random classID)\InProcServer32
ThreadingModel
Apartment

Troj/Proxmeg-B will also create the following registry entries to run code exported by OLE Object on startup:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\SharedTaskScheduler
(random classID)
OLE Object

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad
(random classID)
OLE Object

The following registry entry is set, affecting internet security:

HKCU\Software\Microsoft\Internet Explorer\Security\selfdel
<path to Trojan>

Troj/Proxmeg-B will attempt to suppress error and warning messages generated by Windows system and security related applications.

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