Looking at a banking trojan

Discussion in 'Malware Help (A Specialist Will Reply)' started by Gabethebabe, Jan 21, 2010.

  1. Gabethebabe

    Gabethebabe Private E-2

    First post!!

    I received a trojan dropper through e-mail, it autosent itself to the complete hotail address list of a friend of mine.

    So I was playing with it on my virtual system. It installs some banking trojan (flashdob.dll and aecces.exe are the active components). I have two questions for the experts here:

    1) Upon installation the malware emptied the windows/prefetch folder. Why would it do that?
    2) After installation hijackthis found a new O2 (BHO) entry, which said (no file). I was under the impression that "(no file)" BHOs didn“t do anything, is that correct?

    On a side note: I have been browsing with my virtual machine, using IE with its unsafest settings, on all kinds of p0rn, warez and whatnot sites and the only thing i caught was some harmless adware. It seems that you only get infected if you do not want to. Is there anyone that can help me get rootkit infected so I can play around with it? Maybe someone has a sample or knows some pretty poisoned website.

    thanks!
     
  2. TimW

    TimW MajorGeeks Administrator - Jedi Malware Expert Staff Member

    Welcome to Major Geeks!

    If you are concerned about banking info stealing, you need to call your bank and credit card companies to alert them and use a different computer to change all your online passwords.

    Please read ALL of this message including the notes before doing anything.

    Pleases follow the instructions in the below link:

    READ & RUN ME FIRST. Malware Removal Guide


    and attach the requested logs when you finish these instructions.

    • **** If something does not run, write down the info to explain to us later but keep on going. ****
    • Do not assume that because one step does not work that they all will not. MGtools will frequently run even when all other tools will not.


    • After completing the READ & RUN ME and attaching your logs, make sure that you tell us what problems still remain ( if any still do )!
    Helpful Notes:


    1. If you run into problems trying to run the READ & RUN ME or any of the scans in normal boot mode, you can run the steps in safe boot mode but make sure you tell us what you did later when you post logs. See the below if you do not know how to boot in safe mode:
    2. If you have problems downloading on the problem PC, download the tools and the manual updates for SUPERAntiSpyware and Malwarebytes ( links are given in the READ & RUN ME) onto another PC and then burn to a CD. Then copy them to the problem PC. You will have to skip getting updates if (and only if) your internet connection does not work. Yes you could use a flash drive too but flash drives are writeable and infections can spread to them.
    3. If you cannot seem to login to an infected user account, try using a different user account (if you have one) in either normal or safe boot mode and running only SUPERAntiSpyware and Malwarebytes while logged into this aother user account. Then reboot and see if you can log into the problem user account. If you can then run SUPERAntiSpyware, Malwarebytes, ComboFix and MGtools on the infected account as requested in the instructions.
    4. To avoid additional delay in getting a response, it is strongly advised that after completing the READ & RUN ME you also read this sticky:
    Any additional post is a bump which will add more delay. Once you attach the logs, your thread will be in the work queue and as stated our system works the oldest threads FIRST.
     
  3. Gabethebabe

    Gabethebabe Private E-2

    Hi Tim,

    Thanks for your reply. However, I am not really having a malware problem (maybe I posted in the wrong forum?), but I deliberately allowed a trojan dropper to execute in my virtual system (Windows XP guest system running in VirtualBox on an Ubuntu Host), so I could study its behaviour.

    So I looked at the stuff it installed and came up with two questions, as indicated in the OP. I was hoping either of the malware experts in this forum could shed a light on it.

    Thanks.
     
  4. TimW

    TimW MajorGeeks Administrator - Jedi Malware Expert Staff Member

    The first question is a question. Malware can affect all kinds of files and folders. Depends on what its intention is.
    Your second question, yes, an empty 02 line means something is missing and not of real harm.
     

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