MSIL/LockScreen [Threat Name] go to Threat

MSIL/LockScreen.E [Threat Variant Name]

Category trojan
Size 28672 B
Detection created Apr 30, 2010
Detection database version 5075
Short description

MSIL/LockScreen.E is a trojan that blocks access to the Windows operating system. To regain access to the operating system the user is asked to send an SMS message to a specified telephone number in exchange for a password. When the correct password is entered the trojan is deactivated. The trojan is probably a part of other malware.

Installation

The trojan does not create any copies of itself.

Other information

The trojan displays the following dialog box:

When the correct password is entered the trojan is deactivated.


The password to regain access to the operating system is one of the following:

  • 5d8w6y9s
  • marek

Some examples follow.

The trojan may turn off the computer.


The trojan may set the following Registry entries:

  • [HKEY_LOCAL_MACHINE\­SOFTWARE\­Microsoft\­Windows\­CurrentVersion\­Run]
    • "System32" = ""
    • "System" = ""

Trojan requires the Microsoft .NET Framework to run.

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