According to the latest threat report by antivirus software provider BitDefender, Trojan.AutorunInf.Gen, which is a 'generic mechanism designed to spread through removable devices', accounted for 13.4 per cent of the infections detected by the firm during March.
The trojan is more than twice as prevalent as its nearest rival - Win32.Worm.Downadup.Gen - which was responsible for 6.19 per cent of infections, while Exploit.PDF-JS.Gen made up 5.3 per cent and came in third.
Other pieces of malware which were frequently seen during the last month included Trojan.JS.Downloader.BIO, Trojan.Autorun.AET, Gen:Heur.Krypt.21 and Worm.Autorun.VHG.
Earlier this year, experts claimed that two types of malware - Spy Eye and Zeus - have been recorded 'fighting' each other for control of computers, with Spy Eye including coding to destroy the other trojan.
SophosLabs manager Richard Wang said the development shows how determined hackers are becoming in the battle to increase the financial gains netted by malware.
The trojan is more than twice as prevalent as its nearest rival - Win32.Worm.Downadup.Gen - which was responsible for 6.19 per cent of infections, while Exploit.PDF-JS.Gen made up 5.3 per cent and came in third.
Other pieces of malware which were frequently seen during the last month included Trojan.JS.Downloader.BIO, Trojan.Autorun.AET, Gen:Heur.Krypt.21 and Worm.Autorun.VHG.
Earlier this year, experts claimed that two types of malware - Spy Eye and Zeus - have been recorded 'fighting' each other for control of computers, with Spy Eye including coding to destroy the other trojan.
SophosLabs manager Richard Wang said the development shows how determined hackers are becoming in the battle to increase the financial gains netted by malware.
