W32, Gen:Trojan.Heur.Vilsel.1, TrojanDownloader:Win32/Agent.KY (Microsoft) , Vilsel trojan (McAfee)


Variants in the Trojan:W32/Vilsel family download a file onto the system.


Automatic action

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.

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Technical Details

While active, the trojan also connect to and downloads files from the following website:


Registry Changes

Trojan:W32/Vilsel disables the Windows firewall by modifying the registry entry:

  • HKLM\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile EnableFirewall = 0

It also makes changes to the following registry keys:

  • HKU\S-1-5-21-299502267-823518204-839522115-1003\Software\Microsoft\windows\CurrentVersion\Internet Settings MigrateProxy = 1
  • HKU\S-1-5-21-299502267-823518204-839522115-1003\Software\Microsoft\windows\CurrentVersion\Internet Settings ProxyEnable = 0
  • HKLM\SYSTEM\CURRENTCONTROLSET\HARDWARE PROFILES\CURRENT\Software\Microsoft\windows\CurrentVersion\Internet Settings ProxyEnable = 0
  • HKU\S-1-5-21-299502267-823518204-839522115-1003 SavedLegacySettings =

Date Created: -

Date Last Modified: -