Trojan.Ransom (flash_player.exe variant)

This trojan blocker ( MD5: fc57466eeb1329c639c70b170f885e9e ) prevents all software execution.
To remove the Trojan (and unlock windows), infected users need to enter a valid serial number.
According to VirusTotal, only 3 Antivirus detect the threat: http://www.virustotal.com/file-scan/report.html?id=0117c027bdbedd9753d9cb0970ebebb77d568dbe0dbee706ecbb8158f8cdc057-1310888850

Number to Call: 79879234829
Number to Call: 79879234311
Number to Call: 79879234298
Code to unlock Windows: 99885522