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             AUSCERT External Security Bulletin Redistribution

                  ESB-2003.0753 -- UNIRAS Brief - 600/03
                Malicious Software Report - W32/Mimail.c@MM
                             02 November 2003

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        AusCERT Security Bulletin Summary
        ---------------------------------

Publisher:              UNIRAS (UK Govt. CERT)
Operating System:       Windows
Impact:                 Execute Arbitrary Code/Commands
                        Access Confidential Data
                        Denial of Service
Access Required:        Remote

Comment: 

AusCERT has produced an article "Protecting your computer from malicious 
code", available at http://www.auscert.org.au/3352

See also:

http://www.f-secure.com/v-descs/bics.shtml
http://www3.ca.com/virusinfo/virus.aspx?ID=37439
http://us.mcafee.com/virusInfo/default.asp?id=helpCenter&hcName=mimail
http://www.sophos.com/virusinfo/analyses/w32mimailc.html
http://securityresponse.symantec.com/avcenter/venc/data/w32.mimail.c@mm.html
http://www.trendmicro.com/vinfo/virusencyclo/default5.asp?VName=WORM_MIMAIL.C
http://www.messagelabs.com/viruseye/info/default.asp?virusname=W32%2FMimail%2EC%2Dmm

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Title
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Malicious Software Report
NAME: W32/Mimail.c@MM
ALIAS: I-Worm.WatchNet, W32/Bics@MM

UNIRAS Comment
==============

AVS suppliers are currently reporting this virus as a MEDIUM or HIGH
threat, and numerous instances have been seen in the UK over the past
24 hours. Most vendors have issued updates to detect and remove the
worm; organizations should ensure these are deployed without delay.

Detail
======

W32/Mimail.c is a mass-mailing worm.  It constructs messages similar
in form to the following:

   Subject : Re[2]: our private photos (plus additional spaces then random 
characters)
   Attachment : PHOTOS.ZIP (12,958 bytes) which contains PHOTOS.JPG.EXE 
(12,832 bytes)

   Hello Dear!,
   Finally, i've found possibility to right u, my lovely girl :)
   All our photos which i've made at the beach (even when u're withou ur bh:))
   photos are great! This evening i'll come and we'll make the best SEX :)

   Right now enjoy the photos.
   Kiss, James.

and may have a forged FROM address of 'james@<fake domain>'.

The worm harvests e-mail addresses from the local filestore, and
attempts to propagate using a built-in SMTP engine.  It also appears
to have a denial-of-service function targeting several hard-wired
addresses which may be invoked if a valid Internet connection is
present.  (A check is made to see if www.google.com is reachable.)

Useful URLs
===========

http://vil.nai.com/vil/content/v_100795.htm
http://www.symantec.com/avcenter/venc/data/w32.mimail.c@mm.html
http://www.f-secure.com/v-descs/bics.shtml
http://www.sophos.com/virusinfo/analyses/w32mimailc.html

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