Also, check for invisible iframes in your websites, that can also trigger antiviruses.
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Virus Infecting all Homepages on Webserver
My Web Server (Server 2003) has apparently been hit by a virus. The virus adds lines of malicious code to all the homepages of the sites we host. When someone goes to one of the sites that we host, it re-directs them to another page and a virus pops up on the client machine. I have ran numerous virus utilities with no prevail. I need help to determine the source of the virus. I currenlty have all the sites down to figure out a possible solution. Any help would be greatly appreciated.
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Answers
Here are a few of the sites that we are having problems with:
www.itc.jobs
www.ahindustrial.com
www.toadfly.com
www.coreengg.com
We went in a manually deleted the lines of code that were redirecting users. But after a while whatever it is, drops the lines back into the homepage html files.
Are there any specific sections in these websites that are redirecting users to malicious websites?
I can see no problems on www.itc.jobs.
ahindustrial.com website has been blacklisted and is mentioned as being dangerous by my antivirus.
toadfly.com also looked normal.
www.coreengg.com has also been blacklisted and is being mentioned as dangerous by my antivirus.
I've found some really good tool that will allow you to find out exactly what code is causing problems on your website:
http://www.blacklistdoctor
Go here and put in the different websites and click on Diagnose. Wait until the diagnosis is complete, and see the report. I analysed coreeng website and was shown some code that refers to an iframe linking to woocasino.com. That is the problem with that website. You need to search for "woocasino.com" and remove any and all references to it.
That is my research for 1 of them, you can put all of your websites there for analysis and it should help you figure out exactly what to look for within your code to remove.
Hope it helps.
Yeah. I found the code in the index.html of core at the bottom. And with ahi the only thing in the index.html file is this one line of code:
<iframe src="http://a5j.at:8080/in
I need to find the source that is putting the code into these html files. Once I remove the code it puts it back in the html file.
As for core, this is the line of code:
<iframe src="http://woocasino.com/
If the MalwareBytes scan doesn't return anything, then its best to change the administrator passwords and make them quite difficult to brute-force. Then, do an online scan with TrendMicro HouseCall:
http://housecall.trendmicr
This scan will work on a Windows 2003 server as well and will remove all infections it finds.
I don't have any shared folders on the server.
The MalwareBytes scan came up with nothing. The house call scan found 10 cookies and detected five vulnerabilities (MS07-023, MS07-025, MS07-036, MS07-042, and MS08-074) with the error message on all five:
An error occurred while trying to retrieve more information about this vulnerability. There is currently no more information available.
Any more ideas?
It seems that all those vulnerabilities are pointing towards Office installations on the server as well as XML parser.
Here are the webpages that have the updates:
http://www.microsoft.com/t
http://www.microsoft.com/t
http://www.microsoft.com/t
http://www.microsoft.com/t
http://www.microsoft.com/t
Try running the Windows Update, that shold automatically download all the required updates. If not, then download them manually and install them.
Hope it helps.
The log looks ok to me. I see that you have IIS running on this server. I have worked on IIS before but not extensively. This thread might be of help to you:
http://www.experts-exchang
Please see the comments from Admin3k and do accordingly and see if it makes a difference.
Hope it helps.
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by: warturtlePosted on 2009-08-26 at 10:19:01ID: 25190005
First of all, download and run MalwareBytes Anti-Malware (www.malwarebytes.org) on the server. Let me know, what you find.
Change all FTP passwords and double-check all Javascript code as well.
Are the websites down currently?