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Sun, Mar 02, 2014 10:40 pm

F-Secure Rescue CD 3.16

F-Secure provides a free Rescue CD which allows you to boot a PC from a CD and scan it for malware using F-Secure's antivirus software. The F-Secure Rescue CD will attempt to disinfect any infected files and will rename any it can't disinfect by putting a .virus extension at the end of the file name. By doing that, when you reboot the system into Microsoft Windows, the infected file will not be loaded into memory.

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Wed, Sep 21, 2011 10:40 pm

F-Secure 3.11 Rescue CD Scan of Compaq SR1900NX Windows XP PC

If I need to scan someone's Microsoft Windows system for malware, I usually make a backup of the system outside of Windows, e.g., by booting the system with a Norton Ghost 2003 boot CD and backing up the system to an external USB drive. I then usually perform an initial scan of the system using a rescue CD, such as the F-Secure Rescue CD 3.11. Using a rescue CD can be especially helpful if a system won't boot into Windows or runs abysmally slow because of a malware infection.

In this instance I used the F-Secure Rescue CD 3.11 on a Compaq Presario SR1900NX system running WIndows XP to perform an initial malware scan of the system.

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Sun, Sep 14, 2008 1:38 pm

Setting F-Secure Resce CD to Automatically Reboot

I needed to scan a system with an F-Secure Rescue CD 2.00. I started the scan late at night and wanted to go home to sleep before the scan completed. But I wanted the system to reboot into Microsoft Windows after the scan was completed. Since the results of the scan are stored in /tmp, which exists only in the system's memory when the system is booted from the F-Secure Rescue CD, I also wanted the output log files produced by the scanning process to be stored somewhere where I could access them after the reboot.

When a scan is started, the following is displayed:

Scanning


Scanning all filesystems mounted under /mnt/scan/ directory.
The results of the scan will be saved in /tmp/scan_results.txt

Alt-F1 This screen.
Alt-F5 To see details of files being scanned.
Alt-F6 To see any malware found.
Ctrl-C TO cancel scanning.

You can also use Alt-F2, Alt-F3, or Alt-F4 to get a shell prompt. I used Alt-F2 to obtain a shell prompt.

When a system is booted from the rescue CD, the hard drive on the system is mounted under /mnt/scan. In this case, the hard drive is an IDE drive designated as hda2 by Linux, which is the operating system used on the F-Secure Rescue CD. So I could store the log files, which are as follows, somewhere under /mnt/scan/hda2.

scan_error.txt
scan_log.txt
scan_results.txt

On this system there was a C:\TEMP directory, so I decided to store them there. You can see the directories on the hard drive using the ls command, e.g. ls /mnt/scan/hda2/.

Using the pico editor on the CD, I created a script, which I named rebootwin in the /tmp directory to automatically reboot the system after 9 hours, presuming that the scan of the system should certainly be completed within that time (it took about 3 hours).

root@tty2[/]# cd /tmp
root@tty2[tmp]# pico rebootwin

I put the following commands in the script:

#!/bin/bash
date
sleep 9h
cp scan*.txt /mnt/scan/hda2/TEMP/.
reboot

The script prints the date and time and then "sleeps" for 9h. When that amount of time has elapsed, it copies the log files from the scanning process from the /tmp directory to the C:\TEMP directory on the system's hard drive. The system is then rebooted. If the system is set to boot from the hard drive first, rather than a CD-ROM drive, it will boot into Windows from the hard drive. If the system's BIOS is set to attempt to boot the system first from a CD in a CD-ROM drive, it will reboot from the F-Secure Rescue CD, but, unless a key is hit within a few seconds, it will not continue with a reboot into the antivirus scanning software, but will instead boot from the system's hard drive.

I saved the script with Ctrl-X and then made the script executable with the chmod command. I then started the script with ./rebootwin.

root@tty2[tmp]# chmod 755 test
root@tty2[tmp]# ./rebootwin
Sat Sep 13 23:52:46 UTC 2008

The next morning, I was able to check the results of the scanning process by examing the log files on the system's hard drive.

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Sat, Sep 13, 2008 11:31 pm

Scan of J with AVG and F-Secure Rescue CDs

I've been continuing to check a Windows XP Pro system, J, which became infected on September 8, with programs to detect any malware that might remain on the system. I used AVG Rescue CD and an F-Secure Resce CD 2.00 to check the system tonight.

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Sun, Mar 02, 2008 1:56 pm

F-Secure Rescue CD 2.00

I've been using an AVG Rescue CD to boot Windows systems from a CD, rather than the copy of Windows installed on the system's hard drive, and then perform an antivirus scan of the system. The AVG Rescue CD provides a Windows GUI for performing scans and I've found it works very well. The cost is currently $149.95 in U.S. dollars.

Searching for other rescue CD's, I also found one from F-Secure, which uses a Knoppix LiveCD to boot a system to perform an antivirus scan of the system. You can use it to boot a Windows system to check the system for viruses without booting into a possibly infected copy of the Windows operating system. F-Secure Rescue CD 2.00 is free and can update itself over the network, if a DHCP server is available on the network to provide it with IP configuration information. You don't need to understand Linux to use the software; you are presented with prompts to walk you through the process of scanning a system.

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Mon, Oct 09, 2006 10:09 pm

F-Secure Anti-Virus for DOS

F-Secure offers a free antivirus program for DOS. This can be run from a command line within windows or you can boot the system from a DOS floppy or CD when you can't get Windows to start properly or want to run an antivirus program from outside of Windows. The program is available from F-Secure at Free Virus Removal Tools, which provides a link for downloading the software from F-Secure's FTP site at ftp://ftp.f-secure.com/anti-virus/free/.

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