ANI Exploits in Spam

From: James C. Slora, Jr. (james.slora_at_phra.com)
Date: 03/29/05

  • Next message: Britton, Jeff B.: "RE: ANI Exploits in Spam" 
    Date: Mon, 28 Mar 2005 18:42:08 -0500
To: <incidents@securityfocus.com>

    FYI -

    Today we received dozens of spam messages with cursor style tags that
    point to hostile .ANI files exploiting the cursor and icon vulnerability
    from MS05-002.
     
    The ANI files in my spam get downloaded from an apparently compromised
    set of virtual servers sharing a box. On a vulnerable system, the ANI
    will download and execute a variant of sdbot named hi.exe from a server
    registered to a different ISP.

    Older versions of Outlook will download the hostile ANI if the message
    gets previewed in HTML.

    VirusTotal showed about half the vendors detected the hostile ANI file
    under various names, and only a few detected the packed sdbot in hi.exe.

    I do have samples if anyone is interested.

    There are many different message subjects and message bodies following
    similar forms. The ANI files also have a different name on each virtual
    server.

    Typical hostile spam body is below. I removed the < from the style tags,
    and the specific site from the url.

    Keep your motor running dude as you're into a surprise. I;mcoming home
    tonight and taking you out. happy birthday love Jess

    style>* {CURSOR: url("http://SiteStillLive-Removed/m89.ani")}/style>

  • Next message: Britton, Jeff B.: "RE: ANI Exploits in Spam"