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 *



Sunburst backdoor – code overlaps with Kazuar

While looking at the Sunburst backdoor, we discovered several features that overlap with a previously identified backdoor known as Kazuar. Our observations shows that Kazuar was used together with Turla tools during multiple breaches in past years.

Lazarus covets COVID-19-related intelligence

As the COVID-19 crisis grinds on, some threat actors are trying to speed up vaccine development by any means available. We have found evidence that the Lazarus group is going after intelligence that could help these efforts by attacking entities related to COVID-19 research.

Sunburst: connecting the dots in the DNS requests

We matched private and public DNS data for the SUNBURST-malware root C2 domain with the CNAME records, to identify who was targeted for further exploitation. In total, we analyzed 1722 DNS records, leading to 1026 unique target name parts and 964 unique UIDs.

What did DeathStalker hide between two ferns?

While tracking DeathStalker’s Powersing-based activities in May 2020, we detected a previously unknown implant that leveraged DNS over HTTPS as a C2 channel, as well as parts of its delivery chain. We named this new malware “PowerPepper”.

Subscribe to our weekly e-mails

The hottest research right in your inbox