08-12-2012 05:42 AM
I am using Windows 7 Home Premium on a 64 bit operating system. I am using a toshiba satellite L750.
I recently started recieving alerts from Norton that it has detected and blocked Trojan.Gen.2 and Trojan.zeroaccess.b
Seeing this, I disconnected my laptop from the internet and ran a full system scan.
It found nothing but tracking cookies.
I restarted the computer and upon start up, Norton came up again with another alert.
wmsan.dll detected by SONAR- Quarantined
The alerts of Trojan.Gen.2 and Trojan.zeroaccess.b stopped popping up.
I'm not sure if the trojan has mysteriously dissappeared or that it has opened a backdoor and now norton is failing to detect it.
As stated by Quads messages, I have NOT done anything.
I have a Flash drive.
I hope you can help me out on this.
Thanks in advance for the assistance.
08-12-2012 05:18 PM - edited 08-12-2012 05:20 PM
ANY other user other than the thread starter is not to use any instructions, scripts or proceedures, The work though in cleaning a system is individual and only for that system due to a number of factors.
Unfortunately, with the amount of threads means the waiting time is longer, Norton continually Blocking files won't hurt your system but is is just annoying, Please wait and be patient. I am trying to keep up, spending hours here to script and clean machines on a first come/first served basis. If you or someone adds to your thread It will be pushed back in line due to the new update. I use the boards in reverse to what is seen
Please do not run any tools unless instructed to do so.
4. Cleanup (including system as a whole)
Please read every post completely before doing anything.
Read Slowly and all of it.
Please download http://www.bleepingcomputer.com/download/farbar-re
Transfer it on to the Flash Drive / portable Hard Drive.
Enter System Recovery Options.
To enter System Recovery Options from the Advanced Boot Options:
On the System Recovery Options menu you will get the following options:
Windows Complete PC Restore
Windows Memory Diagnostic Tool
08-12-2012 06:22 PM
I really appreciate it for the quick reply.
I have followed the instructions and attached the log below.
As I am your eyes, the current state of the computer is that everything is working at this moment. There were no pop-up messages from norton at all. It seems to be running like it was before the trojan (not saying the problem is solved at all, just trying to give you details that might help)
I patiently await your next set of instructions.
Again, thanks for helping me out.
08-13-2012 09:22 PM
Download the script attached, needs to be the same file name as well (fixlist.txt), Copy across to flash drive
NOTE: This script was written specifically for this user, for use on that particular machine. Running this on another machine may cause damage to your operating system
Now please enter System Recovery Options again. Like previously
08-13-2012 10:32 PM
I followed the instructions and i have attached the file.
As stated in my last post, the laptop seems to be working like before the virus (Again, not saying the problem is fixed)
Thanks very much for the help
08-13-2012 10:41 PM
Please read carefully Read all of this message first
Download Combofix http://www.bleepingcomputer.com/download/anti-viru
Right click the combofix.exe on the desktop and select from the menu "Run as Administrator"
****Note: Do not mouseclick combofix's window while it's running. That may cause it to stall or freeze ****
Note: ComboFix may reset a number of Internet Explorer's settings, including making it the default browser.
Note: Combofix prevents autorun of ALL CDs, floppies and USB devices to assist with malware removal & increase security.
08-13-2012 10:54 PM
I read through your post and I have a couple of questions before I procede with your instructions (So i don't screw anything up)
When you say to disable all security programs, for norton is it "disable smart firewall" and "disable anti-virus autoprotect"? Or are there more things to disable on norton. If so, where would i find those disabling options?
Furthermore, If i do disable norton, Should i disconnect my computer from the internet in case more malware comes in my computer? The reason i am asking this is due to the part where it says
"If you are using windows XP It might display a pop up saying that "Recovery console is not installed, do you want to install?" Please select yes & let it download the files it needs to do this. Once the recovery console is installed Combofix will then offer to scan for malware. Select continue or yes."
Since you are downloading it seems to infer that i have some sort of internet connection which could mean that more malware can infec my computer during the time when norton is disabled.
I know this is a bit long so i'll summarise my questions
1. When disabling norton, are these the only 2 things to disable "disable smart firewall" and "disable anti-virus autoprotect"?
2. when norton is disabled, should i have internet connectivity
08-16-2012 03:02 AM
I am currently running ComboFix. I have followed your instructions but it seems to be taking a long time.
Combofix has been running for about 2 hrs now. Its stuck on the blue screen
Scanning for infected files...
This typically does not take more than 10 minutes
However, Scan times for badly infected machines may easily double
This is where it is stuck at. The underscore at the bottom is blinking.
I have followed all notes such as disable autoprotect and SONAR for 1 hour and closed all programs.
I haven't touched the computer except for wrigling the mouse to removed the screen saver so i can see when it is finished. Other than that i have not used it in anyway.
It has not asked for a reboot
In the corner, from Norton says that pev.3xe has high CPU usage.
I will leave my computer in this state until you reply .
I will update if anything happens
(written from a friends computer)
08-16-2012 06:35 AM