My wife opened an email last night. It was from a friend, but it was inquiring as to why my wife kept sending it, which she hadn't. Obviously it's mail related, but the computer wasn't backed up , what does Trojan Horse CRYPTIC.CBY do and what files can I safely transfer upon reinstallation of OS? I have AVG free and it just welcomed the guest without wrning until it was too late.
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Trojan Horse CRYPTIC.CBY what does it affect
post #2 of 11
1/28/11 at 5:57pm
post #4 of 11
2/1/11 at 3:33am
Try this before you reinstall...
Download, install and update Malwarebytes Antimalware and MS Security Essentials - both can be found on Filehippo.com
Remove AVG - these days, AVG, AVAST and other such free antivuruses have become almost useless, apart from the M$ Security Essentials...
If you each have separate accounts, boot into the administrative one and set the wife's account to Standard or General User... If hers is the Administrative one, set another account as Administrator and do the above to hers...
Boot into SAFE MODE and run Malwarebytes... Remove any nasties, and note where they are so you can manually delete if you have too.
Reboot back into the Administrative account and run the M$ product, again it will automatically remove the nasty...
Have found this to work 99% of the time and takes the time to download the anti viral products, install and update and the time to run them (20 minutes tops), compared to a reinstall with backup..
TIP: I tell this to everyone who gets an attack like this... Always set an account as Administrator that is password protected. Set all other accounts to Standard or General User. Only use the Administrative account as that, for updating the operating system and installing known good virus free programs. Most, if not all M$ viruses exploit the fact that most users do not do this, so it allows the exploit to affect the whole OS using Administrative privileges. However if it affects a non admin account, the buck in most cases 'stops there'....
Download, install and update Malwarebytes Antimalware and MS Security Essentials - both can be found on Filehippo.com
Remove AVG - these days, AVG, AVAST and other such free antivuruses have become almost useless, apart from the M$ Security Essentials...
If you each have separate accounts, boot into the administrative one and set the wife's account to Standard or General User... If hers is the Administrative one, set another account as Administrator and do the above to hers...
Boot into SAFE MODE and run Malwarebytes... Remove any nasties, and note where they are so you can manually delete if you have too.
Reboot back into the Administrative account and run the M$ product, again it will automatically remove the nasty...
Have found this to work 99% of the time and takes the time to download the anti viral products, install and update and the time to run them (20 minutes tops), compared to a reinstall with backup..
TIP: I tell this to everyone who gets an attack like this... Always set an account as Administrator that is password protected. Set all other accounts to Standard or General User. Only use the Administrative account as that, for updating the operating system and installing known good virus free programs. Most, if not all M$ viruses exploit the fact that most users do not do this, so it allows the exploit to affect the whole OS using Administrative privileges. However if it affects a non admin account, the buck in most cases 'stops there'....
post #5 of 11
2/1/11 at 8:33am
I beg to differ and I am sure I have a lot of company...I would agree with AVG, but Avast free and it predecessors have not let me down over the last several years...nary a virus/trojan....some, I grant you are not worth the powder to blow them to h3ll, but there is absolutely nothing wrong with Avast free nor Avira free from what I can gather on many other computer help forums to which I belong
post #6 of 11
2/1/11 at 11:36am
- The Bard sRc
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I beg to differ and I am sure I have a lot of company...I would agree with AVG, but Avast free and it predecessors have not let me down over the last several years...nary a virus/trojan....some, I grant you are not worth the powder to blow them to h3ll, but there is absolutely nothing wrong with Avast free nor Avira free from what I can gather on many other computer help forums to which I belong
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post #7 of 11
2/1/11 at 11:42am
post #8 of 11
2/1/11 at 12:49pm
I post on another site... Virus within an an ad banner... AVG - fail lets in in, AVAST - fail lets it in, AVIRA - fail lets it in... All different systems, ALL failed to pick it up and ALL were free... M$ security essentials picked it up instantly and stopped it executing, Firefox banned the site immediately..
I followed my own advice to rid the three systems of the nasty and after each removal tested with M$ SE and it stopped the nasty...
I think with the 'free' AV products, they are getting sloppy on purpose to instigate the user to buy the full version.
I also found that AVG and AVAST, much like NORTON, McAFEE, BULLGUARD and Kaspersky seriously hit system performance. I personally won't use them at the moment... Like sRc, I tend to rotate them, but I am pretty careful... If you truly want to rid the virus scourge stick a Linux distro on rather than windows....
I followed my own advice to rid the three systems of the nasty and after each removal tested with M$ SE and it stopped the nasty...
I think with the 'free' AV products, they are getting sloppy on purpose to instigate the user to buy the full version.
I also found that AVG and AVAST, much like NORTON, McAFEE, BULLGUARD and Kaspersky seriously hit system performance. I personally won't use them at the moment... Like sRc, I tend to rotate them, but I am pretty careful... If you truly want to rid the virus scourge stick a Linux distro on rather than windows....
post #9 of 11
2/1/11 at 1:35pm
post #10 of 11
2/1/11 at 5:14pm
Thanks for all of your input especially on how to clean it up. I haven't experienced any problems since but I am going to run a scan as MrTee suggested and see if there's anything there. I haven't made any moves yet because after it happened I was just going to reinstall, but wife is attached to some of the STUFF, so I've been waiting for signs., redirects and other weird stuff.
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on MSE - nothing but, on all our comps at the moment ...
(Comodo, AVG, AVAST, Antivir .... before) I am tired 