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How many years have viruses and
trojans been around? Ten at least, right? Maybe fifteen. Haven't most users at the executive level been computing about that long? You would think so. Then why is it that the users at that level are the most gullible when it comes to opening email that is questionable? Maybe it's because they get so much email that they just don't have time to think before opening - just open and look.
Hmmm...nothing happened. I know, I'll forward it to the HR manager since it has the word resume in it. Great, another manager too busy to think. Why open an attachment from someone who said they saw our ad on
Craigslist. Hey, we're not even advertising on
Craigslist right now. And it's a zip file!
Doh!
My whole day was shot today tracking down and eradicating this nasty
trojan called Proxy-Agent.
aj or Spam-
Mailbot. The offending file is
wmupdate.
exe found in System32 but figuring that out took eight hours and a half dozen scans from every available anti-virus publisher. We run
Symantec AV Corporate edition which includes protection at the SMTP gateway, on the Exchange server and at the desktop. But believe it or not,
Symantec doesn't recognize this one. We pay big bucks for their protection. This one has been out since Dec 2005. You would think they would have it in their database by now, but no. The symptoms are continual pop-ups from
Symantec Email Proxy saying, "Your email message to ... with the subject of ... was unable to be sent. Your email server rejected the message." Hundreds of the little buggers as long as you're connected to the
internet.
I ran a full
SAV scan on the workstation. It reports no
malware. I download, install and run a full system scan of
AVGFree. It finds nothing. A fresh update and scan of
Spybot - also nothing. The same thing for
Adaware - nothing. I know I'm not crazy. The pop-ups continue when I reconnect the workstation to the
internet. Somebody has got to know about this. I know. I'll try
TrendMicro House call. That has always worked in the past - nothing. The pop-ups continue.
TrendMicro Sysclean,
Sophos Anti-
rootkit, CA
eTrust - nothing. Ah, I forgot
McAfee. Let's try that. They have a free online scan. Wow! It detected something, but won't remove it unless I fork over $39.95. Tough. They identified it so I just deleted it. It worked but I've wasted eight hours. I'm not happy with
Symantec. Why didn't their products detect it?
Here is a link to more info on
Experts Exchange. I found it after the fact by Googling resume.zip
craigslist. I wish I had thought to Google that at the beginning of the day. Live and learn.
Update:
Symantec has a
web page where you can advise them of new
variants of viruses. That's apparently what we got. I guess someone has to be the first to get it, eradicate it and then advise them. These viruses mutate so rapidly that not even big companies
like Symantec with all their resources can stay on top of it. Our
Symantec reseller recommends we implement an Intrusion Prevention System (
IPS). The better
IPS products not only protect against well known attacks via signatures but can also detect and block previously unknown attacks such as protocol anomalies (non-RFC compliant protocol traffic).