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Wednesday, 13 January 2010

Convincing look OWA fake leads to PDF exploit

There are getting spammed out at the moment:

From: automailer@blahblah.blah [mailto:automailer@blahblah.blah]
Sent: 13 January 2010 11:08
To: Victim Username
Subject: The settings for the username@blahblah.blah mailbox were changed

Dear user of the blahblah.blah mailing service!

We are informing you that because of the security upgrade of the mailing service your mailbox (username@blahblah.blah) settings were changed. In order to apply the new set of settings click on the following link:


Best regards, blahblah.blah Technical Support.


The displayed link isn't the actual link, underneath it points to something like:

Clicking through the link takes you to a convincing looking OWA (Outlook Web Access) forgery page, populated with the victim's domain name and email address.

There are two exploits on the page, the first one is a drive-by download of an infected PDF file called pdf.pdf for which VirusTotal detection is only 10/41, detected by McAfee as Exploit-PDF.ac and various others. The executable file you are directed to download is also a bit patchy on detections.

Sender names include:
  • operator@
  • support@
  • notifications@
  • no-reply@
  • system@
  • alert@
  • info@
..all on your local domain, obviously.

Subjects include:
  • The settings for the blah@blah.blah mailbox were changed
  • The settings for the blah@blah.blah were changed
  • A new settings file for the blah@blah.blah mailbox
  • A new settings file for the blah@blah.blah has just been released
  • For the owner of the blah@blah.blah e-mail account
  • For the owner of the blah@blah.blah mailbox

Some domains in use on this are:
  • vcrtp1.eu
  • vcrtp21.eu
  • vcrtprsa21.eu
  • vcrtpsa21.eu
  • vcrtrsa21.eu
  • vcrtrsr21.eu
  • vcrtrsrp2.eu
  • vcrtrsrp21.eu
..there are probably many more of a similar pattern.

WHOIS details are fake:
Quezada, Ramon
1800 N. Bayshore Drive
33132 Roma
Domains are on a fast flux botnet, so there's no point listing IPs. However, nameservers are as follows:
ns1.raddoor.com [Netrouting Data Facilities, Amsterdam]
ns2.raddoor.com [Verizon Internet Services Inc, Aston]
ns1.elkins-realty.net [Netrouting Data Facilities, Amsterdam]
ns2.elkins-realty.net [Verizon Internet Services Inc, Whitesboro]

Registrant details for raddoor.com are probably bogus:

edmund pang figarro77@gmail.com
751 kinau st. #30
Phone: +1.8085362450
Registration details for elkins-realty.net are DEFINITELY bogus:
Name : B O
Organization : B O
Address : 123 elm str.
City : Los Angeles
Province/State : beijing
Country :
Postal Code : 23456
Phone Number : 86--8586104812
Fax : 86--8586104819
Email : BO.la@yahoo.com
Once your machine is infected, it probably gets infected with a Zbot variant as in these two previous examples.

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