Trojan-Spy.Win32.AimSpy

Parent class: TrojWare

Trojans are malicious programs that perform actions which are not authorized by the user: they delete, block, modify or copy data, and they disrupt the performance of computers or computer networks. Unlike viruses and worms, the threats that fall into this category are unable to make copies of themselves or self-replicate. Trojans are classified according to the type of action they perform on an infected computer.

Class: Trojan-Spy

Trojan-Spy programs are used to spy on a user’s actions (to track data entered by keyboard, make screen shots, retrieve a list of running applications, etc.) The harvested information is then transmitted to the malicious user controlling the Trojan. Email, FTP, the web (including data in a request) and other methods can be used to transmit the data.

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Platform: Win32

Win32 is an API on Windows NT-based operating systems (Windows XP, Windows 7, etc.) that supports execution of 32-bit applications. One of the most widespread programming platforms in the world.

Description

Technical Details

This Trojan is designed to steal confidential data. It is a Windows PE EXE file. It is 428,032 bytes in size. It is written in Delphi.

Installation

The Trojan also adds a link to its executable file in the system registry, ensuring that it will be launched when Windows is rebooted on the victim machine:

This ensures that the Trojan will be launched automatically each time Windows is restarted on the victim machine.

Payload

The Trojan scans the system for windows with the class "aim_imessage" and gets contact names from the window titles.

It then scans the windows found for control elements with the class "wndate32class" and for elements with the class "ate32class" and gets text from them.

This text will be saved by the Trojan to the file which contains the Trojan executable file. The files will have a .htm extension, and the file name will be the same name as the contact name.

Removal instructions

If your computer does not have an up-to-date antivirus, or does not have an antivirus solution at all, follow the instructions below to delete the malicious program:

1. Use Task Manager to terminate the Trojan process.
2. Delete the original Trojan file (the location will depend on how the program originally penetrated the victim machine).
3. Delete the following link from the system registry:
   [HKLMSoftwareMicrosoftWindowsCurrentVersionRun]
   "Win32Mgr" = ""
4. Delete all files created by the Trojan.
5. Update your antivirus databases and perform a full scan of the computer ( download a trial version of Kaspersky Anti-Virus).

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