Hi,

We began getting emails returned as not sendable.  The message indicated I should check Spamhaus.  I did this and at first it looked like my IP was not listed.  I contacted Outlook support and followed their suggestion to add a phone number.  Everything was okay for two days.  The email began to be returned again.  I checked Spamhaus.  My IP was listed this time.  I was directed to a link that indicated that Outlook has a trojan called CryptPHP.  the message indicated the only way to take care of this is to get rid of Outlook and re set it from scratch.  Because I  am not sure how to do this properly I will be taking the computer to someone who may understand this.  I need to know what this trojan is doing.  Does it damage only Outlook or can it get to other files?  Have I sent it to others when I have sent out email.  

Apparently it came in on a pirated (I did not know this) Wordpress that we used once about one year ago.  It did not do anything for that year. Then recently I received three spam letters.  I 'junked' each one.  But I opened one to see what it was because the heading seemed like it could be legitimate.  I think opening it stimulated the trojan.  Because immediately after, the emails I sent out started coming back. Do I need to alert everyone I have sent a email to over the last year that they might have a sleeping trojan called CryptPHP?  Is there any way to check before it awakens? Any advice is welcome.

Thanks, JustBev

Hi,

First of all since it's a trojan, please pay attention to it seriously.

I can't guarantee what it is doing or how it affects your computer, anyway please run an updated malware removal tool and anti-virus program to scan the computer and try to remove the trojan.

If you are not familiar with what should be performed, as you mentioned, please take the computer to someone professional to handle.

For this trojan in your scenario, yes please alert everyone that you have sent an email to if possible, in case serious problem occurs and causes their loss.

Regards,

Melon Chen
TechNet Community Su