Malware reports

Online Scanner Top Twenty for June 2008

Table of Contents

Position Change in position Name Percentage
1. Up
Email-Worm.Win32.Brontok.q 1.50
2. Up
not-a-virus:PSWTool.Win32.RAS.a 1.31
3. New!
Trojan.Mac.Dnscha.d 1.14
4. Down
Virus.Win32.Virut.n 1.13
5. New!
not-a-virus:Monitor.Win32.ActMon.511 0.88
6. New!
Trojan.Mac.Dnscha.e 0.76
7. Up
Virus.Win32.Virut.q 0.66
8. Up
Worm.Win32.AutoIt.i 0.61
9. New!
Trojan.SymbOS.Skuller.gen 0.58
10. Return
not-a-virus:RiskTool.Win32.HideWindows 0.57
11. New!
Email-Worm.Win32.Runouce.b 0.57
12. Down
Worm.Win32.Mabezat.b 0.57
13. New!
Trojan-PSW.Win32.LdPinch.fbq 0.54
14. Down -5 Trojan.Win32.Delf.aam 0.53
15. Up
not-a-virus:PSWTool.Win32.PWDump.2 0.49
16. Return
Return 0.49
17. Down
Trojan-Downloader.Win32.AutoIt.aa 0.49
18. Up
Virus.Win32.Alman.b 0.47
19. New!


Trojan-Downloader.Win32.Delf.cxa 0.47
20. Down
not-a-virus:AdWare.Win32.Agent.zk 0.45
Other Malicious Programs 85.81

The Online Scanner Top 20 never ceases to amaze – this month a total of 3(!) malicious programs for non-Windows platforms appeared out of nowhere. Does this mean that other platforms are becoming so popular among virus writers that the usual leading platform, Win32, is now being challenged? Specifically, the new entries of note this month were Trojan.Mac.Dnscha.d, Trojan.Mac.Dnscha.e, Trojan.SymbOS.Skuller.gen.

Trojan.SymbOS.Skuller, one of the oldest Trojans for Symbian OS, replaces all file icons with a skull. Its appearance in the Top Twenty is completely unexpected, as is that of the Trojan.Mac.Dnscha family, which is a shell script for Macs that modifies DNS system settings.

Utilities that aren’t actually malicious, but which are used by other malware to obtain confidential user information or interfere with the smooth functioning of the victim machine are still common among the programs detected by our online scanner. Such programs are classified as not-a-virus.

The Top Twenty veterans Email-Worm.Win32.Brontok, Virus.Win32.Virut, and Virus.Win32.Alman are all still present in the rankings, and showing no signs of fading from the scene.


  • New: Trojan.Mac.Dnscha.d, not-a-virus:Monitor.Win32.ActMon.511, Trojan.Mac.Dnscha.e, Trojan.SymbOS.Skuller.gen, Email-Worm.Win32.Runouce.b, Trojan-PSW.Win32.LdPinch.fbq, Trojan-Downloader.Win32.Delf.cxa.
  • Moved up: Email-Worm.Win32.Brontok.q, not-a-virus:PSWTool.Win32.RAS.a, Virus.Win32.Virut.q, Worm.Win32.AutoIt.i, not-a-virus:PSWTool.Win32.PWDump.2, Virus.Win32.Alman.b.
  • Moved down: Virus.Win32.Virut.n, Worm.Win32.Mabezat.b, Trojan.Win32.Delf.aam, Trojan-Downloader.Win32.AutoIt.aa, not-a-virus:AdWare.Win32.Agent.zk.
  • Returned: not-a-virus:RiskTool.Win32.HideWindows,

Online Scanner Top Twenty for June 2008

Your email address will not be published. Required fields are marked *



Lyceum group reborn

According to older public researches, Lyceum conducted operations against organizations in the energy and telecommunications sectors across the Middle East. In 2021, we have been able to identify a new cluster of the group’s activity, focused on two entities in Tunisia.

GhostEmperor: From ProxyLogon to kernel mode

While investigating a recent rise of attacks against Exchange servers, we noticed a recurring cluster of activity that appeared in several distinct compromised networks. With a long-standing operation, high profile victims, advanced toolset and no affinity to a known threat actor, we decided to dub the cluster GhostEmperor.

APT trends report Q2 2021

This is our latest summary of advanced persistent threat (APT) activity, focusing on significant events that we observed during Q2 2021: attacks against Microsoft Exchange servers, APT29 and APT31 activities, targeting campaigns, etc.

Subscribe to our weekly e-mails

The hottest research right in your inbox