Win32/LockScreen [Threat Name] go to Threat

Win32/LockScreen.AKR [Threat Variant Name]

Category	trojan
Size	116224 B
Detection created	Mar 30, 2012
Detection database version	7013
Aliases	PWS-Zbot.gen.ut.trojan (McAfee)
	Trojan:Win32/Malagent (Microsoft)

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

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

A string with variable content is used instead of %variable% .

The trojan creates the following file:

Libraries with the following names are injected into all running processes:

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

[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run]
- "Leadership Technologies" = "%appdata%\%variable%.exe"
- "videoLAN Media Lab" = "%appdata%\%variable%.exe"
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run]
- "Leadership Technologies" = "%appdata%\%variable%.exe"
- "videoLAN Media Lab" = "%appdata%\%variable%.exe"
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
- "Shell" = "%appdata%\%variable%.exe"
[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
- "Shell" = "%appdata%\%variable%.exe"

The following Registry entries are set:

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0]
- "1400" = 0
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1]
- "1400" = 0
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3]
- "1400" = 0
- "1601" = 0
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System]
- "DisableTaskMgr" = 1
- "DisableRegistryTools" = 1
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
- "NoDesktop" = 1
- "NoWinKeys" = 1
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
- "HideIcons" = 1

The trojan may delete the following Registry entries:

The following programs are terminated:

Win32/LockScreen.AKR 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 (3) URLs. The HTTP protocol is used.

The trojan displays the following dialog box:

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

The trojan blocks keyboard and mouse input.

The trojan checks for Internet connectivity by trying to connect to the following servers:

The trojan executes the following command: