TROJ_WINLOCK.QZA
Trojan:Win32/Ransom.EJ (Microsoft); Win32/LockScreen.AIG (NOD32)
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan locks the desktop of the affected machine and demands the user to pay a fine in order to unlock the desktop.
This Trojan may be unknowingly downloaded by a user while visiting malicious websites.
It connects to certain websites to send and receive information.
TECHNICAL DETAILS
Varies
EXE
23 Feb 2012
Arrival Details
This Trojan may be unknowingly downloaded by a user while visiting malicious websites.
Installation
This Trojan drops the following copies of itself into the affected system:
- %Application Data%\Mozilla\Firefox\firefox.exe
(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Windows\Profiles\{user name}\Application Data on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Application Data on Windows NT, and C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, XP, and Server 2003.)
Autostart Technique
This Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
ffdwnd = %Application Data%\Mozilla\Firefox\firefox.exe
Other Details
This Trojan connects to the following website to send and receive information:
- {BLOCKED}letsicks.com
- {BLOCKED}iacughele.info
NOTES:
It locks the desktop of the affected machine and demands the user to pay a fine in order to unlock the desktop.