Virus Found – Possible Threat “Trojan.Zlob” Undetected in many front line scanner
Once again I have stumbled upon a Possible threat (Trajan Downloader) which is not detected by big guns like Kaspersky / NOD32 (v2 and Beta v3) / Norton / BitDiffender.
| File run.exe received on 10.29.2007 11:56:59 (CET) | |||
| Antivirus | Version | Last Update | Result |
| AhnLab-V3 | 2007.10.27.0 | 2007.10.29 | - |
| AntiVir | 7.6.0.30 | 2007.10.29 | TR/Dldr.Zlob.dwf |
| Authentium | 4.93.8 | 2007.10.28 | - |
| Avast | 4.7.1074.0 | 2007.10.28 | Win32:Zlob-AFG |
| AVG | 7.5.0.503 | 2007.10.28 | Downloader.Zlob |
| BitDefender | 7.2 | 2007.10.29 | - |
| CAT-QuickHeal | 9.00 | 2007.10.26 | TrojanDownloader.Zlob.gen |
| ClamAV | 0.91.2 | 2007.10.29 | Trojan.Dropper-2557 |
| DrWeb | 4.44.0.09170 | 2007.10.29 | - |
| eSafe | 7.0.15.0 | 2007.10.28 | - |
| eTrust-Vet | 31.2.5250 | 2007.10.29 | - |
| Ewido | 4.0 | 2007.10.28 | - |
| FileAdvisor | 1 | 2007.10.29 | - |
| Fortinet | 3.11.0.0 | 2007.10.19 | - |
| F-Prot | 4.3.2.48 | 2007.10.29 | - |
| F-Secure | 6.70.13030.0 | 2007.10.29 | - |
| Ikarus | T3.1.1.12 | 2007.10.29 | - |
| Kaspersky | 7.0.0.125 | 2007.10.29 | - |
| McAfee | 5150 | 2007.10.26 | - |
| Microsoft | 1.2908 | 2007.10.29 | - |
| NOD32v2 | 2622 | 2007.10.28 | - |
| Norman | 5.80.02 | 2007.10.26 | - |
| Panda | 9.0.0.4 | 2007.10.28 | - |
| Prevx1 | V2 | 2007.10.29 | - |
| Rising | 19.47.02.00 | 2007.10.29 | Trojan.DL.Win32.Zlob.def |
| Sophos | 4.23.0 | 2007.10.29 | Troj/Zlobar-Fam |
| Sunbelt | 2.2.907.0 | 2007.10.27 | - |
| Symantec | 10 | 2007.10.29 | - |
| TheHacker | 6.2.9.110 | 2007.10.27 | - |
| VBA32 | 3.12.2.4 | 2007.10.28 | - |
| VirusBuster | 4.3.26:9 | 2007.10.28 | Trojan.DR.Zlob.Gen!Pac.32 |
| Webwasher-Gateway | 6.6.1 | 2007.10.29 | Trojan.Dldr.Zlob.dwf |
| Additional information | |||
| File size: 102415 bytes | |||
| MD5: aa6f7f7a2c7ee6b0981b9c0430370458 | |||
| SHA1: 720f1122e31665c445a8a32d3f4dee1513054e2d | |||

I am able to attach the file at Yahoo Mail which suggests that Norton scanner fails to detect the threat.

I am sending the infected files to NOD32 and Kaspersky as only this 2 allows non customers to send sample. In case of norton, there no service in which a non customer can send virus sample !!!
I will update the post when I get any reply from NOD32 or Kaspersky…
Update – (Oct 29, 2007 / IST 19:33 hours)
Its confirm from Kaspersky LAB, they have replied,
Hello.
New malicious software was found in the attached file. Trojan-Downloader.Win32.Zlob.dzz It’s detection will be included in the next update. Thank you for your help.
Please quote all when answering. Do not forget to include you registration data.
—————–
Regards,
Maslennikov Denis
Virus Analyst, Kaspersky Lab.Ph.: xxxxxx
E-mail: xxxxxx
http://www.kaspersky.com http://www.viruslist.com
Kaspersky is really quick and fast to act on the possible threat issue, however I am yet to receive any reply from NOD32 (ESET) !!!
John on October 29th, 2007
The AVG is the best among them all ??