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This is a tricky one!


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#1 kar_mc1

kar_mc1

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Posted 20 June 2009 - 10:52 AM

I suspect I have a virus on my network. Two of my three wirelessly networked computers died on me yesterday within about an hour of each other. Both, IIRC, did a spontaneous shutdown, and from then on would not boot into windows. Just the boot screen and then the black screen. The third one on the network, the one I'm on now, so far, seems normal. (??!!)

Computer 1: Dell XPS, WinXP
Computer 2: HP Laptop, Vista Home Premium
Computer 3: Vista Home Premium (still working)
All Pentium Processors (4 I think) and within a few years old.

All had up to date patches and antivirus software, though C1 has the Google thing, and C2 has McAfee protection that ran out of subscription about a month or two ago and so hasn't got the latest definitions. (I know...I couldn't afford to renew, but I know about the freebies...)

I ran whatever diagnostic programs I could find on the machines by pushing various F keys. So far the C1 system found no reason for the failure to boot windows. On the laptop I ran the disk self test and got this: phoenix bios test status 10009 replace hard disk.

Second time I ran it it was OK. Third time back to the 10009 message. Can't find that same test on C1, but another disk check "seems" to say that the HDD is OK.

I also hve tried antivirus boot disks (Kaspersky, Avira) and have had trouble getting any of them to even attempt to clean either machine. All tell me their virus defs are out of date and that I should update, meanwhile I've updated the latest versions I could find and obviously can't update dl an update to a computer that won't even boot into Windows. I'm about to try Bit-Defender, but expect more of the same.

Oh, I should mention, also, that unauthorized charges were just made to one of my credit cards over the past two days. So did I manage to get keylogger and hard disk zapper and god only knows what else?

Looks like I'm in need of some detailed advice. Is this the forum I should be posting this in? If not, is there one here or can anyone recommned a group where I could find someone patient enough to offer some sage guidance?

I'm no expert, but have always been able to fix all my computer problems with the kind advice of friends both online and off. If I haven't described things clearly, I can do so if I"m told what's needed and I follow directions well.

Thanks for any help,
KHT

Edit: So guess I need to invoek my warranty and get HP to replace the HDD on the laptop. Further testing revealed that there is no OS on C1. So, obviously I need to reinstall. So, I'm wondering what happened. Is there a piece of malware that could do all this over the network and if so, why is C3 still apparently OK?

Also wondering, how can I tell if any malware will remain once I get the computers up and running again? Maybe a stupid question, but what about rootkits?

Edited by kar_mc1, 20 June 2009 - 01:16 PM.


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#2 Elise

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Posted 21 June 2009 - 03:12 AM

Hello Kar mc1, and :thumbsup: to BleepingComputer!

Thats quite a complicated story, but lets see if we can get thing sorted out here!

First of all, if you think you had unauthorized creditcard charges, the best thing to do is always announce your bank and they will tell you what to do. Just to be on the safe side....

It is possible, if all your computers are on the same network, that one might infect the other. For that reason I recommend you to keep the ones you suspect to be infected offline, and concentrate first of all on the one you are working on right now, so you will make sure you have at least one working PC to keep connected to the internet.

Let me know if you can boot from all computers, if not, I will give you instructions to make a bootable cd with antivirus program included.

Not to complicate thing further, please follow the steps below for your current computer. You can install the program on all of them, but I recommend downloading it and burn it to a cd and install it on the offline computers, together with the latest definitions update. You can use an usb-device (thumbdrive), but the risk exists that you will spread infections from/to the different computers you have. You can use a flash desinfector to prevent that (but this might not work if a computer is badly infected), let me know if you would like that, so I can give you specified instructions for that.

MALWAREBYTES ANTIMALWARE
-------------------------------------------
Please download Malwarebytes Anti-Malware and save it to your desktop.
alternate download link 1
alternate download link 2

MBAM may "make changes to your registry" as part of its disinfection routine. If using other security programs that detect registry changes (ie Spybot's Teatimer), they may interfere or alert you. Temporarily disable such programs or permit them to allow the changes.
  • Make sure you are connected to the Internet.
  • Double-click on mbam-setup.exe to install the application.
  • When the installation begins, follow the prompts and do not make any changes to default settings.
  • When installation has finished, make sure you leave both of these checked:
    • Update Malwarebytes' Anti-Malware
    • Launch Malwarebytes' Anti-Malware
  • Then click Finish.
MBAM will automatically start and you will be asked to update the program before performing a scan.
  • If an update is found, the program will automatically update itself. Press the OK button to close that box and continue.
  • If you encounter any problems while downloading the definition updates, manually download them from here and just double-click on mbam-rules.exe to install.
On the Scanner tab:
  • Make sure the "Perform Full Scan" option is selected.
  • Then click on the Scan button.
  • If asked to select the drives to scan, leave all the drives selected and click on the Start Scan button.
  • The scan will begin and "Scan in progress" will show at the top. It may take some time to complete so please be patient.
  • When the scan is finished, a message box will say "The scan completed successfully. Click 'Show Results' to display all objects found".
  • Click OK to close the message box and continue with the removal process.
Back at the main Scanner screen:
  • Click on the Show Results button to see a list of any malware that was found.
  • Make sure that everything is checked, and click Remove Selected.
  • When removal is completed, a log report will open in Notepad.
  • The log is automatically saved and can be viewed by clicking the Logs tab in MBAM.
  • Copy and paste the contents of that report in your next reply. Be sure to post the complete log to include the top portion which shows MBAM's database version and your operating system.
  • Exit MBAM when done.
Note: If MBAM encounters a file that is difficult to remove, you will be asked to reboot your computer so MBAM can proceed with the disinfection process. If asked to restart the computer, please do so immediately. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware.
If after installation, MBAM will not run, open the Malwarebytes' Anti-Malware folder in Program Files.
  • Right-click on mbam.exe, rename it to myscan.exe.
  • Double-click on myscan.exe to launch the program.
  • If that did not work, then try renaming and change the .exe extension in the same way as noted above.
  • Double-click on myscan.scr (or whatever extension you renamed it) to launch the program.
If using Windows Vista, refer to How to Change a File Extension in Windows Vista.

regards, Elise


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