backdoor cycvt.B

can Y remove this Trojan manually? How then? Can you help me,pls? Thx

Try this

Malwarebytes Anti-Malware 1.50.1 http://filehippo.com/download_malwarebytes_anti_malware/
always run update so you have latest database before you scan
click on the remove selected button to quarantine anything found

post the scan log here