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AusCERT Update AU-2007.0011 - [Win]
New worms exploiting the Animated Cursor vulnerability
2 April 2007

        AusCERT Update Summary
        ----------------------

Product:              Microsoft Windows Vista
                      Microsoft Windows Server 2003
                      Microsoft Windows XP
                      Microsoft Windows 2000
Operating System:     Windows
Impact:               Execute Arbitrary Code/Commands
Access:               Remote/Unauthenticated
CVE Names:            CVE-2007-0038

Ref:                  AL-2007.0038
                      AU-2007.0010

A security researcher has published information [1] regarding a new worm
which exploits the Windows Animated Cursor vulnerability. This information
has been confirmed by F-Secure (Trojan-Downloader.Win32.Agent.bky) [2][3]. 
F-Secure have also reported a second worm variant (Email-Worm:W32/Anito.A) 
which is exploiting this vulnerability [4].

Both pieces of malware are reported to spread by infecting HTML and PHP
files they finds on the victim's harddrive as well as remote and removable
storage devices. The malware may also attempt to propagate via email 
containing links to malicious web sites.

Administrators may wish to examine logs for attempts to access the malicious
domain macr.microfsot.com.


REFERENCES:

        [1] New worm use the .ani zero day vulnerability
            http://www.cisrt.org/enblog/read.php?68

        [2] F-Secure Weblog - ANI worm
            http://www.f-secure.com/weblog/#00001158

        [3] F-Secure Malware Information Pages: Agent.BKY
            http://www.f-secure.com/v-descs/agent_bky.shtml

        [4] F-Secure Malware Information Pages: Anito.A
            http://www.f-secure.com/v-descs/anito_a.shtml


AusCERT has made every effort to ensure that the information contained
in this document is accurate.  However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.

If you believe that your computer system has been compromised or attacked in 
any way, we encourage you to let us know by completing the secure National IT 
Incident Reporting Form at:

        http://www.auscert.org.au/render.html?it=3192

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================

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