This type of trojan secretly installs spy programs and/or keylogger programs.
Based on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the detected program or file, or ask you for a desired action.
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This trojan-spy takes advantage of a critical vulnerability to harvest sensitive, personal information from an infected machine. The information is then forwarded to a remote server for further, malicious use.
This trojan is reportedly installed on a Windows system by exploiting a critical vulnerability in the server service, which involves improper handling of specially crafted remote procedure call (RPC) requests. Successfully exploiting this vulnerability may provide an attacker complete control of an infected system. Further details of the vulnerability are available in the Microsoft Security Bulletin MS08-067.
On execution, the trojan-spy drops a DLL component, which is also detected as Trojan-Spy:W32/Gimmiv.A, as:
The DLL is injected into svchost.exe. The main executable file will then delete itself.As part of its routine for connecting to a remote server, the trojan will take into account both the operating system version and the presence of any security applications in the system. The trojan checks for the following antivirus programs:
The trojan then attempts to connect to:
The two parameters 'abc=' and 'def=' are determined by the antivirus program and the operating system version, respectively. For example, if avp.exe is installed on an infected machine that runs Windows XP, then abc=1 and def=2. The trojan then harvests the following information from the infected machine:
The harvested information is encrypted using Advanced Encryption Standard (AES) and is sent to the remote server.
The DLL component is registered as a service by adding registry entries.
Creates these keys:
Description Created: 2008-10-24 02:32:06.0
Description Last Modified: 2008-10-24 04:38:03.0