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mcntqlwb.exe New threat?

do you know anything about it?

         

henry0

12:28 pm on Feb 29, 2008 (gmt 0)

WebmasterWorld Senior Member 10+ Year Member



mcntqlwb.exe Heard about it?
I spent half a day fixing my wife’s machine; she’s an exec always checking on her mail even from home!
She got yesterday something very similar to a corp. mail (although no masquerade involved) next ..Trojan on board. (XP pack2 very much kept updated with most recent MS and daily AV updates)

Multi-loader Trojan, no real destructive payload, mostly random financial and few porns.

For some reason I was not able to run most of my tools in safe mode
Finally made it, PCC does not see it, HijackThis does find it, SSD does not find it

Made a restore reg to a known safe point to no avail

Finally tried something new (to me)
D-loaded a tool named: a-Squared HijackFree that one scan resulted in pointing to a “bad file” not supposed to be found: mcntqlwb

Did a search found it and deleted in sys32 (has a nice file icon)
Did a regedit/search; found it in three different places and deleted them

Reboot and … it’s back again

Next: Another great new tool (to me) ComboFix
That did a great job
And again look all over sys 32 and the reg
Killed a few more… (in safe mode – reboot & F8 on XP)

Reboot.. works fine BUT
Tried to empty the trash .. no way
Windows is not that stupid :) if I may not empty the garbage then more of it is live and somehow active in the background somewhere, fortunately as is it lost most of it powers but has a strong will and come back again without is loader capability (any del from reg let it be reborn, but as mentioned with limited powers)

So I tried successfully something else, renaming it in the reg and sys 32
That did it totally; it does not mutate or come back again
However this does not allow eradicating it, but the machine is “clean” and functionality is 100% back

The big surprise is that I found after many searches only two sites that mentioned it
One is from a thread on geektogo board and another from a site that triggered an alarm from Finjan

I searched the principal AV vendor’s sites, none of those have heard about that one.
Is it a brand new one?

Hope the above could help you in case…

coopster

4:06 pm on Feb 29, 2008 (gmt 0)

WebmasterWorld Administrator 10+ Year Member



Out of curiosity, henry0, which AV and which firewall does that personal computer run? And which client is she using to check email? Outlook? Or is it through a web browser? If so, which browser?

20 questions ... ;)

henry0

4:18 pm on Feb 29, 2008 (gmt 0)

WebmasterWorld Senior Member 10+ Year Member



She is using Outlook out of office pro
AV is PcCillin
FW is PcC too

the strange thing is that it came through a VPN
but when she called the IT DPT, they denied having anything wrong going through hmmmm?