Bloodhound.Exploit.56

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Discovered: December 27, 2005
Updated: February 13, 2007 12:50:24 PM
Type: Trojan Horse, Worm
Systems Affected: Windows



Bloodhound.Exploit.56 is a heuristic detection for the Microsoft Windows Graphics Rendering Engine WMF Format Unspecified Code Execution Vulnerability (as described in Microsoft Security Bulletin MS06-001 ).


Note:
Bloodhound.Exploit.56 is designed to identify behavior that would occur if the Microsoft Windows Graphics Rendering Engine WMF Format Unspecified Code Execution Vulnerability (as described in Microsoft Security Bulletin MS06-001 ) is exploited. As Symantec becomes aware of changes to the exploit code, or if files are identified that trigger this detection but are not malicious, the detection is refined. It is important to keep your definitions up to date to ensure the most complete protection.



The Bloodhound.Exploit.56 detection was updated as of the December 30th, 2005 LiveUpdate definitions.

Antivirus Protection Dates

  • Initial Rapid Release version December 28, 2005
  • Latest Rapid Release version May 30, 2007 revision 048
  • Initial Daily Certified version October 31, 2007 revision 003
  • Latest Daily Certified version October 31, 2007 revision 003
  • Initial Weekly Certified release date December 28, 2005

Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.


Technical Description



Bloodhound.Exploit.56 is a heuristic detection for the Microsoft Windows Graphics Rendering Engine WMF Format Unspecified Code Execution Vulnerability (as described in Microsoft Security Bulletin MS06-001 ).

An attacker that exploits this vulnerability could execute code remotely with the privileges of the application used to view the WMF (typically those of the logged-on user). The exploit can be triggered by one of the following methods:

  • By browsing a network share that contains a malicious file.
  • By opening an e-mail that contains a malicious file.
  • When a user visits a Web site that contains a malicious file.

    It has been reported that the following Web sites may contain malicious files that trigger the exploit:

  • [http://]h0nest.org/[REMOVED]/12.exe (IP address 195.0.210.192)
  • [http://]kube.isa-geek.com/[REMOVED]/wen/up.exe (IP address not found)
  • [http://]charmedmadgic.free.fr/[REMOVED]/sdbot05b.jpg (IP address 212.27.63.117)
  • [http://]69.50.171.122/[REMOVED]/test1.php
  • [http://]www.jerrynews.com/[REMOVED]/calc.exe (IP address 211.100.26.169)
  • [http://]apperception.biz/[REMOVED]/main.exe (IP address 66.226.64.19)
  • [http://]apperception.biz/[REMOVED]/calc.exe (IP address 66.226.64.19)
  • [http://]sploso.com/[REMOVED]/starter2.exe (IP address 72.5.54.36)
  • [ftp://]x.www2.ninoa.com/[REMOVED]/pub/ied.exe (IP address 205.177.28.180)
  • [ftp://]x.www2.ninoa.com/[REMOVED]/pub/epl.exe (IP address 205.177.28.180)
  • [http://]www.freecat.biz/[REMOVED]/tr/pawn005.exe (IP address not found)
  • [http://]www.freecat.biz/[REMOVED]/tr/pawn002.exe (IP address not found)
  • [http://]fullchain.net/[REMOVED]/apa/dex.exe (IP address 192.225.177.21)
  • [http://]235.regvista.com/[REMOVED]/liveupdate.exe (IP address 85.255.115.197)
  • [http://]fiv.bestswf.com/[REMOVED]/zob.exe (IP address 62.214.98.56)
  • [http://]imkportedoor.com/[REMOVED]/images/ny.wmf
  • [http://]www.studiolacase.com/[REMOVED]/images/msits.exe
  • [http://]123greetings.2mydns.com/[REMOVED]/up.exe
  • hunggar.info/[REMOVED]/e.exe
  • card.twbbs.biz/[REMOVED]/up.exe
  • tftp –i 86.135.149.130 GET h1.exe
  • [http://]luckyboy2000.go2.icpcn.com/[REMOVED]/1230.exe
  • [http://]expl.us/[REMOVED]/web.exe
  • [http://]expl.us/[REMOVED]/bin/file1.exe
  • [http://]regtop.info/[REMOVED]/tur.exe
  • [ftp://]66.235.203.27/[REMOVED]/chezz.exe
  • [http://]bluefade.net/[REMOVED]/c.exe
  • 196.regvista.com/[REMOVED]/liveupdate.exe
  • [http://]n.s.x.northclicks.net/[REMOVED]/ctr.jpg
  • [http://]www.11511.com/imgs/ad/[REMOVED]/3721/a.exe
  • [http://]1800-search.com/[REMOVED]/as.exe
  • [http://]warehouse.deptos.com.mx/[REMOVED]/m.exe

    Note: The exploit requires no actual user interaction to trigger.

    A malicious file can also arrive as an attachment to an email with the following characteristics:

    Subject:
    News from lhasa radio

    Message body:
    [BLANK]

    Attachment:
    News from lhasa radio.gif

    The attachment has the .gif extension, but is in fact a malicious WMF file that triggers the exploit once the attachment is opened or viewed, and drops a copy of another threat, Backdoor.NetThief. This file is currently detected as Bloodhound.Exploit.56, but definitions dated January 05, 2006 or earlier may detect this file as Backdoor.NetThief.
Files that are detected as Bloodhound.Exploit.56 may be malicious. We suggest that you submit to Symantec Security Response any files that are detected as Bloodhound.Exploit.56. For instructions on how to do this using Scan and Deliver, read How to submit a file to Symantec Security Response using Scan and Deliver .

Recommendations

Symantec Security Response encourages all users and administrators to adhere to the following basic security "best practices":

  • Use a firewall to block all incoming connections from the Internet to services that should not be publicly available. By default, you should deny all incoming connections and only allow services you explicitly want to offer to the outside world.
  • Enforce a password policy. Complex passwords make it difficult to crack password files on compromised computers. This helps to prevent or limit damage when a computer is compromised.
  • Ensure that programs and users of the computer use the lowest level of privileges necessary to complete a task. When prompted for a root or UAC password, ensure that the program asking for administration-level access is a legitimate application.
  • Disable AutoPlay to prevent the automatic launching of executable files on network and removable drives, and disconnect the drives when not required. If write access is not required, enable read-only mode if the option is available.
  • Turn off file sharing if not needed. If file sharing is required, use ACLs and password protection to limit access. Disable anonymous access to shared folders. Grant access only to user accounts with strong passwords to folders that must be shared.
  • Turn off and remove unnecessary services. By default, many operating systems install auxiliary services that are not critical. These services are avenues of attack. If they are removed, threats have less avenues of attack.
  • If a threat exploits one or more network services, disable, or block access to, those services until a patch is applied.
  • Always keep your patch levels up-to-date, especially on computers that host public services and are accessible through the firewall, such as HTTP, FTP, mail, and DNS services.
  • Configure your email server to block or remove email that contains file attachments that are commonly used to spread threats, such as .vbs, .bat, .exe, .pif and .scr files.
  • Isolate compromised computers quickly to prevent threats from spreading further. Perform a forensic analysis and restore the computers using trusted media.
  • Train employees not to open attachments unless they are expecting them. Also, do not execute software that is downloaded from the Internet unless it has been scanned for viruses. Simply visiting a compromised Web site can cause infection if certain browser vulnerabilities are not patched.
  • If Bluetooth is not required for mobile devices, it should be turned off. If you require its use, ensure that the device's visibility is set to "Hidden" so that it cannot be scanned by other Bluetooth devices. If device pairing must be used, ensure that all devices are set to "Unauthorized", requiring authorization for each connection request. Do not accept applications that are unsigned or sent from unknown sources.
  • For further information on the terms used in this document, please refer to the Security Response glossary.