McAfee > Theat Center > Virus Detail Page

Overview

This is a trojan detection. Unlike viruses, trojans do not self-replicate. They are spread manually, often under the premise that they are beneficial or wanted. The most common installation methods involve system or security exploitation, and unsuspecting users manually executing unknown programs. Distribution channels include email, malicious or hacked web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.

Characteristics

This trojan drops the Puper trojan to the system.  The description for the Puper trojan can be found here .

The trojan dropper claims to be an installer for the 'eMedia Codec'

Symptoms

System Changes

Files Added

• c:\program files\emedia codec\uninst.exe ( 24143 bytes )
• c:\program files\emedia codec\ecodec.exe
• c:\windows\system32\ld1D1E.tmp ( 28173 bytes )
• c:\windows\system32\dfrgsrv.exe ( 15577 bytes )

Registry

The following registry keys are created:

• hkey_local_machine\software\microsoft\windows\currentversion
  \uninstall\emedia codec\publisher="eMedia Codec Software"
  
• hkey_local_machine\software\microsoft\windows\currentversion
  \uninstall\emedia codec\productionenvironment="49"
  
• hkey_local_machine\software\classes\emediacodec.chl
• hkey_local_machine\software\microsoft\windows\currentversion
  \uninstall\emedia codec
  
• hkey_local_machine\software\microsoft\windows\currentversion\app
  paths\ecodec.exe="C:\Program Files\eMedia Codec\ecodec.exe"
  
• hkey_local_machine\software\microsoft\windows\currentversion
  \uninstall\emedia codec\displayversion="3157556"
  
• hkey_local_machine\software\microsoft\windows\currentversion
  \uninstall\emedia codec\displayname="eMedia Codec 4.0"
  
• hkey_local_machine\software\microsoft\windows\currentversion
  \uninstall\emedia codec\urlinfoabout="www.emediacodec.com"
  
• hkey_local_machine\software\microsoft\windows\currentversion
  \uninstall\emedia codec\uninstallstring="C:\Program Files\eMedia
  Codec\uninst.exe"
  
• hkey_local_machine\software\classes\emediacodec.chl\clsid
  ="{6BF52A52-394A-11D3-B153-00C04F79FAA6}"

Method of Infection

Trojans do not self-replicate. They are spread manually, often under the premise that the executable is something beneficial. Distribution channels include IRC, peer-to-peer networks, newsgroup postings, etc. However they may be downloaded by other viruses and/or Trojans to be installed on the user's system.

Many of these are mass spammed by the author to entice people into double-clicking on them. Alternately they may be installed by visiting a malicious web page (either by clicking on a link, or by the website hosting a scripted exploit which installs the Trojan onto the user's system with no user interaction).

Removal

All Users:
Use current engine and DAT files for detection and removal.

Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).

Additional Windows ME/XP removal considerations

Variants

Variants

N/A

All Information

Overview -

This is a trojan detection. Unlike viruses, trojans do not self-replicate. They are spread manually, often under the premise that they are beneficial or wanted. The most common installation methods involve system or security exploitation, and unsuspecting users manually executing unknown programs. Distribution channels include email, malicious or hacked web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.

Characteristics

Characteristics -

This trojan drops the Puper trojan to the system.  The description for the Puper trojan can be found here .

The trojan dropper claims to be an installer for the 'eMedia Codec'

Symptoms

Symptoms -

System Changes

Files Added

• c:\program files\emedia codec\uninst.exe ( 24143 bytes )
• c:\program files\emedia codec\ecodec.exe
• c:\windows\system32\ld1D1E.tmp ( 28173 bytes )
• c:\windows\system32\dfrgsrv.exe ( 15577 bytes )

Registry

The following registry keys are created:

• hkey_local_machine\software\microsoft\windows\currentversion
  \uninstall\emedia codec\publisher="eMedia Codec Software"
  
• hkey_local_machine\software\microsoft\windows\currentversion
  \uninstall\emedia codec\productionenvironment="49"
  
• hkey_local_machine\software\classes\emediacodec.chl
• hkey_local_machine\software\microsoft\windows\currentversion
  \uninstall\emedia codec
  
• hkey_local_machine\software\microsoft\windows\currentversion\app
  paths\ecodec.exe="C:\Program Files\eMedia Codec\ecodec.exe"
  
• hkey_local_machine\software\microsoft\windows\currentversion
  \uninstall\emedia codec\displayversion="3157556"
  
• hkey_local_machine\software\microsoft\windows\currentversion
  \uninstall\emedia codec\displayname="eMedia Codec 4.0"
  
• hkey_local_machine\software\microsoft\windows\currentversion
  \uninstall\emedia codec\urlinfoabout="www.emediacodec.com"
  
• hkey_local_machine\software\microsoft\windows\currentversion
  \uninstall\emedia codec\uninstallstring="C:\Program Files\eMedia
  Codec\uninst.exe"
  
• hkey_local_machine\software\classes\emediacodec.chl\clsid
  ="{6BF52A52-394A-11D3-B153-00C04F79FAA6}"

Method of Infection

Method of Infection -

Trojans do not self-replicate. They are spread manually, often under the premise that the executable is something beneficial. Distribution channels include IRC, peer-to-peer networks, newsgroup postings, etc. However they may be downloaded by other viruses and/or Trojans to be installed on the user's system.

Many of these are mass spammed by the author to entice people into double-clicking on them. Alternately they may be installed by visiting a malicious web page (either by clicking on a link, or by the website hosting a scripted exploit which installs the Trojan onto the user's system with no user interaction).

Removal -

Removal -

All Users:
Use current engine and DAT files for detection and removal.

Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).

Additional Windows ME/XP removal considerations

Variants

Variants -

N/A