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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 move the file to the quarantine where it cannot spread or cause harm, or remove it.

A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:

  • Check for the latest database updates

    First check if your F-Secure security program is using the latest updates, then try scanning the file again.

  • Submit a sample

    After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.

    Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.

  • Exclude a file from further scanning

    If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.

    Note: You need administrative rights to change the settings.

Technical Details

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:

  • [System Folder]\wbem\sysmgr.dll

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:

  • BitDefender
  • avp.exe
  • Jiangmin
  • KasperskyLab
  • Kingsoft
  • Symantec
  • OneCare Protection
  • Rising
  • TrendMicro
  • dwm.exe

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:

  • MSN Credentials
  • Outlook Express Credentials
  • Protected Storage Information
  • Username
  • ComputerName
  • Patches Installed
  • Browser Information
  • Username (web browsing)
  • Password
  • URL

The harvested information is encrypted using Advanced Encryption Standard (AES) and is sent to the remote server.

Registry Modifications

The DLL component is registered as a service by adding registry entries.

Registry Modifications

Creates these keys:

  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\sysmgr DisplayName = System Maintenance Service ErrorControl = 0 ImagePath = [System Folder]\svchost.exe -k sysmgr ObjectName = LocalSystem Start = 0x00000002(2) type = 0x00000110(272)