May 2009: Top Malware Threats

June 11, 2009

The top ten most prevalent malware threats for the month of May 2009 are compiled from monthly scans performed by Sunbelt's antispyware tool, CounterSpy, and its anti-malware solution, VIPRE Antivirus + Antispyware, is a service of the Sunbelt Software Malware Research Labs.

The results represent the number of times a particular malware infection was detected during CounterSpy and VIPRE scans that report back to Sunbelt's community of opt-in users.

The top ten most prevalent spyware threats for the month of May are:

1. Trojan-Spy.Win32.Zbot.gen 6.34%

2. BehavesLike.Win32.Malware (v) 5.28%

3. Trojan-Downloader.Zlob.Media-Codec 2.48%

4. Trojan.1 2.45%

5. Virtumonde 2.11%

6. Trojan.DNSChanger.Gen 2.01%

7. Exploit.PDF-JS.Gen (v) 1.90%

8. Trojan.JS.Obfuscated.gen.a (v) 1.86%

9. INF.Autorun (v) 1.39%

10. Trojan-Downloader.Generic 1.31%