Trojan.Ransom (porno-rolik.avi.exe)

This trojan blocker ( MD5: a2c260b53c5fc518b66bacc793b562d6 ) prevents all software execution.
To remove the Trojan (and unlock windows), infected users need to enter a valid serial number.

Number to Call: 9032805492
Number to Call: 9032805453
Number to Call: 9032798454
Number to Call: 9651895594
Code to unlock Windows: SCHOOL

Pornoplayer variant.
Already noticed on the past: here (28 May 2k11) ~ here (4 Jun 2k11) ~ here (9 Jun 2k11) ~ here (11 Jun 2k11) ~ here (12 Jun 2k11) ~ here (12 Jun 2k11) ~ here (13 Jun 2k11) ~ here (20 Jun 2k11) ~ here (21 Jun 2k11) ~ here (21 Jun 2k11)