which scanner one can trust

Hi all
Running these creatures

NOD32,spywareblaster,spywareguard,M$ antispyware,spybot S&D,adaware
system comes up clean as a wistle.
However, readings has infected me with a bad habit of checking the "on line scanners" I usually check only -C:Windows- to shorten scanning time. yesterday "eTrust Antivirus Web Scanner" found "abest.exe"
https://www.wilderssecurity.com/showthread.php?t=77085
Today "rav online scanner" marked this
C:\WINDOWS\IFinst25.exe - Backdoor:Win32/IzRam.1_7 -> Infected

loading IFinst25.exe in jotti. results are

File: IFinst25.exe
Status: INFECTED/MALWARE
Packers detected: UPX
Scanner results
AntiVir Found nothing
Avast Found Win32:Trojan-gen.
AVG Antivirus Found nothing
BitDefender Found Backdoor.IzRam.1.7
ClamAV Found nothing
Dr.Web Found BackDoor.Ifinst
F-Prot Antivirus Found nothing
Fortinet Found W32/Izram.A-bdr
Kaspersky Anti-Virus Found nothing
mks_vir Found nothing
NOD32 Found nothing
Norman Virus Control Found nothing
VBA32 Found nothing

 

I guess your computer is infected with this trojan.
See here for which AV vendors got this in their definitions.

Also try scanning this file at VirusTotal , and hopefully more AV vendors will add detection for it soon.

 

Hi kjempen

Thanks for the link, its similar to jotti.org link. So, you think my comp is infected, and that is exactly what I mean, assuming that my comp is infected, what is the use of NOD32, adaware, spybot S&D, spywareguard, spywareblaster and M$ antispyware if they cant detect the infection. Which scanner is reliable then. thanks

 

Yes, it is similar to jotti, but it does have a few scanners that jotti doesn't.
Also, when you scan files at these 2 places you also submit the samples that are scanned automatically in the same process.

No scanner can protect you 100%. It is not a bad selection you have of security programs, but might I suggest something like NOD32 combined with Trojan Defence Suite 3? And do you have a firewall? Firewalls are extremely important when it comes to protection for backdoor trojans.

You seemed to be extremely unlucky since you came across a piece of malware that even KAV failed to detect (which usually have a signature for almost every piece of malware out there).

Good luck! And don't give up just because you got unlucky one time.

EDIT: Some stupid typos etc. fixed