Win32/LockScreen [Threat Name] go to Threat

Win32/LockScreen.ATH [Threat Variant Name]

Category trojan
Size 31744 B
Detection created Apr 17, 2013
Detection database version 8238
Aliases Trojan:Win32/Urausy.E (Microsoft)
  TR/Urausy.E.95 (Avira)
Short description

Win32/LockScreen.ATH is a trojan that blocks access to the Windows operating system.

Installation

When executed, the trojan copies itself into the following location:

  • %appdata%\­AltShell.dat

The trojan may create the following files:

  • %appdata%\­AltShell.ini

In order to be executed on every system start, the trojan sets the following Registry entry:

  • [HKEY_CURRENT_USER\­Software\­Microsoft\­Windows NT\­CurrentVersion\­Winlogon]
    • "shell" = "explorer.exe,%appdata%\­AltShell.dat"

The trojan creates and runs a new thread with its own program code within the following processes:

  • %windir%\­system32\­svchost.exe
  • %windir%\­syswow64\­svchost.exe

The following programs are terminated:

  • taskmgr.exe
Information stealing

The trojan collects the following information:

  • volume serial number
  • computer name
  • operating system version
  • antivirus software detected on the affected machine

The trojan can send the information to a remote machine.

Other information

Win32/LockScreen.ATH is a trojan that blocks access to the Windows operating system.


The trojan acquires data and commands from a remote computer or the Internet.


The trojan contains a list of (1) URLs. The HTTP protocol is used.


To regain access to the operating system the user is asked to send information/certain amount of money via Ukash, Paysafecard payment service.


When the correct password is entered the trojan removes itself from the computer.

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