If you are seeing An Garda Siochana Ireland’s National Police Service on your computer screen, it signifies that you are infected with a ransom program. This type of malware is created to hostage the PC. It will lock everything and leave you with modified wallpaper that contains notices and warnings.
A new Windows locker Trojan is circulating the web that disguise as a notification page from FBI. Its headers and introduction messages contains the following text:
Celas is a Trojan that will function as ransom software. Upon infecting a computer, this computer virus will lock your computer and state that you are using illegal copies of music files. It will demand you to pay a sum of 50 Euro as penalty. The transaction is typically accomplished online. Victims are asked to pay through designated processor. Upon completion, user must send transaction details to an attacker which in return will provide a code to unlock the PC.
“Willkommem bei Windows Update” is a ransom page that is part of Trojan.Ransomlock.P. The Trojan will attack the Windows registry to make the affected computer unusable. Next, the Trojan will demand for payment. As mentioned on the ransom page, it requires victims to pay 100 Euro to get the unlock code.