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Computer attacked by malware- Still infected?


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#1 desperadoravi

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Posted 06 May 2010 - 10:21 PM

My laptop was recently attacked by some sort of malware. I cannot provide details of the exact problem, as it happened while my girlfriend was using the computer at work. She had to turn off the firewall to get the network connection to work and within a couple of hours she received a pop-up warning her that the computer was infected and whether she wanted it resolved. She unsuspectingly clicked yes and this was followed by a deluge of pop up windows for porn sites, viagra etc.

Steps to correct problem

1. I ran malwarebytes in safe mode and did not come up with any infected items.
2. I ran Super Antispyware professional in safe mode and it detected 31 trojans which I then removed.
3. I then restarted the laptop and ran Kaspersky Anti-Virus and it came up with nothing except for a vulnerabilities detected in MS-Office.
4. I ran Malwarebytes one more time and it did not detect anything.

At this poinit, I just want peace of mind that I do not have any residual spyware/malware on my laptop as I use it for paying bills. I would greatly appreciate it if you could recommend steps I can take to ensure my laptop is clean.

Thanks in advance

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#2 quietman7

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Posted 07 May 2010 - 07:14 AM

Scanning with Malwarebytes Anti-Malware in safe or normal mode will work but removal functions are not as powerful in safe mode. Why? MBAM is designed to be at full power when malware is running so safe mode is not necessary when using it. In fact, MBAM loses some effectiveness for detection & removal when used in safe mode because the program includes a special driver which does not work in safe mode. Further, scanning in safe mode prevents some types of malware from running so it may be missed during the detection process. Additionally, there are various types of malware infections which target the safeboot keyset so booting into safe mode is not always possible. For optimal removal, normal mode is recommended so it does not limit the abilities of MBAM. Doing a safe mode scan should only be done when a regular mode scan fails or you cannot boot up normally. If that is the case, after completing a safe mode scan, reboot normally, update the database definitions through the program's interface (preferable method) and try rescanning again.

Please download TFC (Temp File Cleaner) by Old Timer and save it to your desktop.
alternate download link
  • 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, 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.
  • TFC will clear out all temp folders for all user accounts (temp, IE temp, Java, FF, Opera, Chrome, Safari), including Administrator, All Users, LocalService, NetworkService, and any other accounts in the user folder.
  • Important! If TFC prompts you to reboot, please do so immediately. If not prompted, manually reboot the machine anyway to ensure a complete clean.
Note: It is normal for the computer to be slow to boot after running TFC cleaner the first time.

Please perform a scan with Kaspersky Online Virus Scanner.
-- Requires free Java Runtime Environment (JRE) to be installed before scanning for malware as ActiveX is no longer being used.
-- This scan will not remove any detected file threats but it will show where they are located so they can be cleaned with other tools.
  • Vista users need to right-click the IE or FF Start Menu or Quick Launch Bar icons and Run As Administrator from the context menu.
  • Read the "Advantages - Requirements and Limitations" then press the Posted Image... button.
  • You will be prompted to install an application from Kaspersky. Click the Run button. It will start downloading and installing the scanner and virus definitions.
  • When the downloads have finished, you should see 'Database is updated. Ready to scan'. Click on the Posted Image... button.
  • Make sure these boxes are checked. By default, they should be. If not, please check them and click on the Posted Image... button afterwards:
    • Detect malicious programs of the following categories:
      Viruses, Worms, Trojan Horses, Rootkits
      Spyware, Adware, Dialers and other potentially dangerous programs
    • Scan compound files (doesn't apply to the File scan area):
      Archives
      Mail databases
  • Click on My Computer under the Scan section. OK any warnings from your protection programs.
  • The scan will take a while so be patient and do NOT use the computer while the scan is running. Keep all other programs and windows closed.
  • Once the scan is complete (the 'status' will show complete), click on View Scan Report and any infected objects will be shown.
  • Click on Save Report As... and change the Files of type to Text file (.txt)
  • Name the file KAVScan_ddmmyy (day, month, year) before clicking on the Save button and save it to your Desktop.
  • Copy and paste (Ctrl+C) the saved scan results from that file in your next reply.
-- Note: Some online scanners will detect existing anti-virus software and refuse to cooperate. You may have to disable the real-time protection components of your existing anti-virus and try running the scan again. If you do this, remember to turn them back on after you are finished.

IMPORTANT NOTE: Anytime your encounter malware on your computer (or usb drive) and that computer was used for online banking, has credit card information or other sensitive data on it, all passwords should be changed immediately to include those used for banking, email, eBay, paypal and any online activities which require a username and password. You should consider them to be compromised and change all passwords from a clean computer as a precaution in case an attacker was able to steal your information when the computer was infected. Banking and credit card institutions should be notified immediately of the possible security breach.
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