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MVP Logo John Carrona
Windows Expert - Consumer
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Originally Added to Website:  14 Sep 2009
Last updated:  13 Apr 2014
removed Avast online scan link from list

TDSS Killer
Power Tools listing below...
Bootable Rescue CD's listing below...

Free Online Independent Malware Scans

Try a couple of these free, online scanners to see if anything has slipped by your protection (most require that you use Internet Explorer):
(Be advised that some of these scanners will pickup things in "quarantine" from other anti-virus programs - so review the results carefully
Having difficulty with running the scans using IE9? - some scans are being updated by the manufacturer

http://housecall.trendmicro.com
http://www.bitdefender.com/scan8/ie.html
http://support.f-secure.com/enu/home/ols.shtml
http://ca.com/us/securityadvisor/virusinfo/scan.aspx
http://www.eset.com/onlinescan/
http://www.ewido.net/en/onlinescan/ - thanks to Tehsplink!  added 17 Feb 09
http://www.windowsecurity.com/trojanscan/ - thanks to Tehsplink!  added 17 Feb 09
http://us.mcafee.com/root/mfs/default.asp

http://www.kaspersky.com/virusscanner - Scan Only, no removal
http://www.pandasecurity.com/homeusers/solutions/activescan/ - Scan Only, no removal

If you find that you're infected (or the scan doesn't complete or closes unexpectedly), post in the malware/security forum
If you're not infected, post back in the original location and we'll try some more stuff.


TDSS Killer:  http://support.kaspersky.com/faq/?qid=208283363
Be very, very careful with this.  The TDSS rootkit infects the partition table - so even a full format won't remove it.  When using a tool like TDSS Killer a very real possibility exists that the system may not be able to boot afterwards.  If unsure, ask for additional advice about using this tool.  FYI - I am not a malware removal expert, so I don't presume to be able to offer malware removal advice.  I'm experienced enough that I can offer advice for recovering from a damaged partition table that won't let your system boot.


Power Tools:
BE VERY, VERY CAREFUL!!!  These tools can hose (damage) your system if used too aggressively!!! 
Set a System Restore Point before using!!!
- Norton Power Eraser (requires internet access to operate):  http://security.symantec.com/nbrt/npe.aspx?
- Microsoft Safety Scanner (haven't used this myself):  http://www.microsoft.com/security/scanner/en-us/default.aspx

- Comodo Cleaning Essentials (has "KillSwitch" - a Process Explorer w/whitelist for processes):  http://www.comodo.com/business-security/network-protection/cleaning_essentials.php

Rescue CD's:

BitDefender Rescue CD:  http://download.bitdefender.com/rescue_cd/
Avira AntiVir Rescue System:  http://www.avira.com/en/support-download-avira-antivir-rescue-system
F-Secure Rescue CD 3.00:  http://www.f-secure.com/en_EMEA-Labs/security-threats/tools/rescue-cd
Kaspersky Rescue Disk 10:  http://support.kaspersky.com/faq/?qid=208282173
Microsoft Standalone System Sweeper BETAhttp://connect.microsoft.com/systemsweeper
AVG Rescue CD:  http://www.avg.com/us-en/avg-rescue-cd
Panda Rescue CD:  http://www.pandasecurity.com/homeusers/downloads/docs/product/help/is/2010/en/241.htm
Panda SafeCD:  http://research.pandasecurity.com/panda-safecd-4-4-3-0/
GData BootCD: https://www.gdatasoftware.com/support/main-subjects/upgrade-service/download.html
Dr.Web LiveCD:  ftp://ftp.drweb.com/pub/drweb/livecd/
TrendMicro Rescue CD:  http://www.trendsecure.com/Info/Rescue_Disk/html/download.html
PCTools Alternate Operating System Scanner:  http://www.pctools.com/aoss/details/
Emsisoft Emergency USB Stick (A Squared):  http://www.emsisoft.com/en/software/stick/

Trinity Rescue Kit (contains: ClamAV, AVG, F-Prot, BitDefender):  http://trinityhome.org/Home/index.php?wpid=1&front_id=12
Shardana Antivirus Rescue Disc Utility (Shardu)(contains: Avira AntiVir Rescue System, BitDefender Antivirus Rescue CD, Dr. Web Live DC, F-Secure Antivirus Rescue, GData Rescue CD, Kaspersky KAV RescueCD, Panda Safe CD):  http://www.sarducd.it/downloads.html

List of 13 rescue disks:  http://www.raymond.cc/blog/archives/2008/12/11/13-antivirus-rescue-cds-software-compared-in-search-for-the-best-rescue-disk/
Contains reviews of these 14 products from 04Dec2008:
    Avira Rescue System v3.4.4
    BitDefender Rescue CD v2
    Dr.Web LiveCD v4.44
    F-Secure Rescue CD v3
    Kaspersky Rescue CD v8.8.1.18
    * Norton Recovery Tool (requires Norton product key)
    * VBA Rescue v3.12
    Panda Safe CD
    * PC Tools Alternate Operating System Scan
    * Quick Heal Native Boot Scan
    ? avast! BART CD v2.0
    * Rising AntiVirus Software for Linux
    G DATA AntiVirus BootCD
    * AVG Rescue CD (shareware w/subscription)

* = not included in my listings above
? = uncertain if included in my listings above