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Need help finding trojan

Discussion in 'Virus & Other Malware Removal' started by FrankB, Sep 9, 2004.

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  1. FrankB

    FrankB Thread Starter

    Joined:
    Mar 19, 2001
    Messages:
    221
    I believe I have a very quiet virus or trojan. It started a few weeks ago. I'm on XP SP2 and noticed that the first time I now go to any new web site there is a 7 to 25 second delay. It says opening page at the bottom of my screen (the correct page) I have dsl so it paints very fast once the page opens. Once I go to a site once the next time is immediate. If I close IE and reopen it, it again takes 7 to 25 seconds. I ran NAV, SystemWorks clean sweep, windoctor, Adaware, Spybot, and Hijack this. The hijack this looks the same as before the problem started. I installed a new router with a firewall and installed Norton Firewall. I've run netstat -a and don't see anything really abnormal. I've turned off sys.ini and win.ini and it didn't help. I then turned off almost all services and it works fine. I turned them on one at a time until I could narrow down the service that was causing the problem. It is Remote Access Auto connection manager or Rasauto. With Rasauto disabled I'm fine. I read about a trojan, Backdoor-AZF that replaces your rasauto.dll with a trojan. My rasauto.dll is 87KB. Can anyone help figure out if this is a new virus or trojan? I went to Microsoft chat support twice but they were not interested at all. Thank you!
     
  2. dvk01

    dvk01 Moderator Malware Specialist

    Joined:
    Dec 14, 2002
    Messages:
    56,253
    First Name:
    Derek
    I very much suspect taht it is a trojan

    I would strongly recommend downloading and running a specialised anti trojan
    the antitrojan that I use for dealing with them is

    TDS3 from http://tds.diamondcs.com.au/

    download & install the 30 day free trial, update it manually as described here http://tds.diamondcs.com.au/index.php?page=update as the trial version doesn't have auto update enabled

    then press scan control & tick all the little boxes in the bottom part of that window, press save configuration and then close that window by pressing the red X in top right corner, then select system testing and select full system scan

    sit back with a cup of coffee and watch what it finds

    NOTE:

    Unlike set and forget av's TDS works with you, it doesn't auto delete anything but puts a list of found suspect files in the bottom window

    right click any file it finds and it gives you options on dealing with it, the normal selection would be delete , but first select "save as text", that will create a logfile of all the found suspect files and put it in the TDS directory called scandump.txt.

    post back with the tds log after running please, just copy & paste the entries from the scandump.txt
     
  3. FrankB

    FrankB Thread Starter

    Joined:
    Mar 19, 2001
    Messages:
    221
    Derak,
    Thanks for the info and the great program. It didn't find anything. I've run every option and learned a lot. The interesting thing is the problem is also gone. I set rasauto to (manual) and went to a web site without a problem.

    TDS found four files with MZ.EXE in my Windows fax program. After researching they are not a problem. I deleted one incoming and four sent faxes and reran the scan and it found nothing.

    I checked the ports for listening and ports 25, 80,81,82,83,110, and 119 "closed connection immediately"

    Local port scan showed loc-scan.exe listening for a connection.

    One thing I did notice changed. On boot up lately I would hear a pop in the speaker like in the old days on dialup if you had the speaker off on your modem. I no longer hear this. It may be related. If it was someone monitoring maybe they saw that I was trying to track them down?
    Thanks again
    Frank
     
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