Help with Zbot infection.

Page 1 of 4 123 ... LastLast

  1. Posts : 25,847
    Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64
       #1

    Help with Zbot infection.


    I got infected with 2 Zbots.
    Malware Bytes removed them.
    Ran a scan with MBM again, still clean.
    Ran a scan with Eset, still clean
    Ran MSE clean.
    Ran scan with SAS, clean.
    Windows update still work.
    Reboot after all.
    Ran sfc 3 or 4 times with reboots after each.
    Unable to correct files.
    CBS LOGS are to big for uuload. I will see what I can do about that.

    Attachment 239548
    Hope this works.
    A little update.
    I did a system restore point and sfc /scannow and that problem is gone.
    Doing more security scans at this time.
    If anybody can read the log so we would know what Zbot messed with might be of some help to others later.
    Another update.
    You can not believe the hell I'm going through. After doing security scans again with Eset and MAM Zbot is back and sfc is not good.
    MAM removed Zbot again and sfc is good again. Removed all restore points. Now I'm wiping free space and down loading Windows Defenders Off Line. Ran DOL clean.
    SFC 3 more times, still problems.
    MAM again, clean
    Start Up Repair 4 times, 1 root cause still not fixed. I have run out of ideas.
    CBS LOG.
    Attachment 239571
    Last edited by Layback Bear; 01 Nov 2012 at 23:34.
      My Computer


  2. Posts : 91
    Windows 7 Home Premium x64 SP1
       #2

    I think its a false positive. One of my laptop picked it up but it was a clean install.

    Was it a zbot from \installshield\_isdel.exe?
      My Computer


  3. Posts : 8,608
    Windows 7 Ultimate 32bit SP1
       #3

    Bear, Copy and paste these lines in Note pad.

    @Echo on
    pushd\windows\system32\drivers\etc
    attrib -h -s -r hosts
    echo 127.0.0.1 localhost>HOSTS
    attrib +r +h +s hosts
    popd
    ipconfig /release
    ipconfig /renew
    ipconfig /flushdns
    netsh winsock reset all
    netsh int ip reset all
    shutdown -r -t 1
    del %0


    Save as flush.bat to your desktop.
    Double click on the flush.bat file to run it.Vista and Windows 7... right click the .bat file and choose to run as Administrator. Your computer will reboot itself.

    Make sure "proxy" settings aren't enabled!! You will also need to change all of your passwords, using another computer, that you know isn't infected.

    About ZBot: http://en.wikipedia.org/wiki/Zeus_(Trojan_horse)
      My Computer


  4. Posts : 25,847
    Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64
    Thread Starter
       #4

    Infected were.
    Windows System 32 installsheild
    Windows\Winsxs\isdel.exe
    ----------------
    Jacee I did as per your instructions. sfc /scannow is still a no go. Everything still seams to work okay. New log.
    Attachment 239615

    Thank you both for your help.
      My Computer


  5. Posts : 8,608
    Windows 7 Ultimate 32bit SP1
       #5

    Download TFC by Old Timer TFC - Temp File Cleaner by OldTimer - Geeks to Go Forums and save it to your desktop.

    Save any unsaved work. TFC will close ALL open programs including your browser!
    Double-click on TFC.exe to run it. If you are using Vista/Windows 7 right-click on the file and choose Run As Administrator.
    Click the Start button to begin the cleaning process and let it run uninterrupted to completion.
    Important! If TFC prompts you to reboot, please do so immediately. If not prompted, manually reboot the machine anyway to ensure a complete clean.

    You should be good to go.
      My Computer


  6. Posts : 91
    Windows 7 Home Premium x64 SP1
       #6

    Layback Bear said:
    Infected were.
    Windows System 32 installsheild
    Windows\Winsxs\isdel.exe
    ----------------
    Jacee I did as per your instructions. sfc /scannow is still a no go. Everything still seams to work okay. New log.
    Attachment 239615

    Thank you both for your help.
    That's a false positive. MBAM picked it up on a my laptop with fresh install OS. Also i restored it from the other laptop which caught it first after finding out that it flagged my fresh new laptop.
      My Computer


  7. Posts : 25,847
    Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64
    Thread Starter
       #7

    I run security scans at least once every 2 days and the Zbot was never there/their before. So I don't think it's a false positive. I have removed it. It's gone. My problem is getting sfc /scannow giving a clean bill of health. Between Normal and Safe mode I have run it over 20 times. If I give you a list of things I have done you would think I have been drinking to much.
    --
    I'm unable to run TFC in Normal or Safe mode. It just freezes my computer. I have removed and installed it 3 times. I have used Ccleaner, and Disc Cleaner Extended, and %temp% many times. Never before have I had a problem with sfc /scannow giving the system files a clean bill of health. Every time I run sfc /scannow the log gets bigger.
    New cbs log.

    Attachment 239710

    Microsoft Windows [Version 6.1.7601]
    Copyright (c) 2009 Microsoft Corporation. All rights reserved.

    C:\Windows\System32>sfc /scannow

    Beginning system scan. This process will take some time.

    Beginning verification phase of system scan.
    Verification 100% complete.
    Windows Resource Protection found corrupt files but was unable to fix some of th
    em.
    Details are included in the CBS.Log windir\Logs\CBS\CBS.log. For example
    C:\Windows\Logs\CBS\CBS.log

    C:\Windows\System32>
      My Computer


  8. Posts : 8,608
    Windows 7 Ultimate 32bit SP1
       #8

    Okay, download Combofix from any of the links below, and save it to your desktop.<--Important
    Link 1
    Link 2
    Link 3

    Click on this link Here to see a list of programs that should be disabled.
    The list is not all inclusive. If yours is not listed and you don't know how to disable it, please ask.
    If your anti-virus or firewall complains, please allow this script to run as it is not malicious.
    Next: Disconnect from the internet. If you are on Cable or DSL, unplug your computer from the modem.
    Next: Please disable all onboard security programs (all running with back ground protection) as it may hinder the scanner from working.
    This includes Antivirus, Firewall, and any Spyware scanners that run in the background.
    • Double click combofix.exe and follow the prompts.
    • When finished, it will produce a log for you.
    Note: Do not mouseclick combofix's window while its running. That may cause it to stall
    Please be patient while the scan runs, at times it may appear to stall.
    When finished and after reboot (in case it asks to reboot), it should open a log, combofix.txt.
    Post this log in your next reply
    After rebooting ensure your Security applications have been re-enabled.
      My Computer


  9. Posts : 18,404
    Windows 7 Ultimate x64 SP1
       #9

    Layback Bear said:
    I run security scans at least once every 2 days and the Zbot was never there/their before. So I don't think it's a false positive.

    That only means it wasn't being picked up in the MBAM definitions as a false positive at that time, but is now. Happens all the time with false positives. Doesn't discount it as a FP like CanIHaz mentioned.
      My Computer


  10. Posts : 25,847
    Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64
    Thread Starter
       #10

    Thank you Jacee. I have printed your instructions and will shift to my other computer.
    I understand it could of been a false positive. That doesn't explain why after getting Zbot and removing it my System Files are not correct and will not allow them selfs to be corrected. That is my concern.
    I do thank you all for your concerns and input.
    Last edited by Layback Bear; 03 Nov 2012 at 00:57.
      My Computer


 
Page 1 of 4 123 ... LastLast

  Related Discussions
Our Sites
Site Links
About Us
Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd
All times are GMT -5. The time now is 04:12.
Find Us