Follow:

 

HackTool:Win32/Mailpassview


HackTool:Win32/Mailpassview is a freeware tool that is used to display passwords for a number of email applications.


What to do now

To detect and remove this threat and other malicious software that may be installed on your computer, run a full-system scan with an appropriate, up-to-date, security solution. The following Microsoft products will detect and remove this threat:
 
 
For more information on antivirus software, see http://www.microsoft.com/windows/antivirus-partners/.

Threat behavior

HackTool:Win32/Mailpassview is a freeware tool that is used to display passwords for a number of email applications.
 
HackTool:Win32/Mailpassview has a graphical user interface (GUI), but can be run without being displayed to the affected user by utilizing command line switches to save the captured password information to various formats. It can show passwords for the following email applications:
 
  • Microsoft Outlook Express
  • Microsoft Outlook
  • Windows Mail
  • Windows Live Mail
  • IncrediMail
  • Eudora
  • Netscape 6.x/7.x
  • Mozilla Thunderbird
  • Yahoo! Mail
  • Hotmail/MSN mail
  • Gmail
 
A configuration file named <filename>.cfg is dropped in the folder the program runs from, f or example, Mailpv.exe would drop Mailpv.cfg.
 
An image of the tool is shown below:
 
 
In the wild, we have observed HackTool:Win32/Mailpassview being used by Trojan:Win32/Nedsym in order to steal passwords from affected users.
 
Analysis by Michael Johnson

Symptoms

HackTool:Win32/Mailpassview is a freeware tool that is used to display passwords for a number of email applications.

Prevention


Alert level: Medium
First detected by definition: 1.45.287.0
Latest detected by definition: 1.179.1033.0 and higher
First detected on: Oct 07, 2008
This entry was first published on: Dec 16, 2010
This entry was updated on: Apr 17, 2011

This threat is also detected as:
  • Win-AppCare/Agent.89088 (AhnLab)
  • W32/MalwareS.WQG (Command)
  • Gen2.BPVYO (Norman)
  • HackTool.Mailpassview!kmuIKt+KsCs (VirusBuster)
  • HackTool.IBI (AVG)
  • TR/Agent.89088.V (Avira)
  • Tool.PassView.13 (Dr.Web)
  • Win32/PSWTool.MailPassView.A (ESET)
  • PSWTool.Win32.Messen (Ikarus)
  • Trojan.Win32.Generic.5209991A (Rising AV)
  • NirSoft (Sophos)
  • PSWTool.Win32.MailPassView.as (Sunbelt Software)
  • MailPassView (Symantec)