[Esd-l] Badtrans worm signature trap for local-rules.procmail

[John D. Hardin]

On Mon, 26 Nov 2001, Rick Thompson wrote:

> I've just trapped one that has alot of similarities in the headers...but its
> not exact:

> > Content-Type: multipart/related;
> > 	 type="multipart/alternative";
> > 	 boundary="====_ABC1234567890DEF_===="

Okay, quotes around that bit, and a slightly different boundary signature...

> > X-Content-Security: [mercury.motleypc.com] original Content-Type was
> audio/x-wav;
> > Content-Type: application/octet-stream;
> name="Sorry_about_yesterday.MP3.9061DEFANGED-pif"
> > Content-ID: <EA4DMGBP9p>
> > Content-Transfer-Encoding: base64

Content-ID looks the same. Two minor changes, then.



# Trap BadTrans? (signature as of 11/26/2001)
#
:0
* > 40000
* < 50000
* ^Subject:.*Re:
* ^Content-Type:.*multipart/related;
* ^Content-Type:.*"multipart/alternative"; boundary="====_ABC
{
        :0 B hfi
        * ^Content-Type: audio/x-wav;
        * ^Content-ID: <EA4DMGBP9p>
        * ^Content-Transfer-Encoding: base64
        | formail -A "X-Content-Security: [$HOST] NOTIFY" \
                  -A "X-Content-Security: [$HOST] QUARANTINE" \
                  -A "X-Content-Security: [$HOST] REPORT: Trapped BadTrans worm - see http://securityresponse.symantec.com/avcenter/venc/data/w32.badtrans.b@mm.html"
}



--
 John Hardin KA7OHZ    ICQ#15735746    http://www.impsec.org/~jhardin/
 jhardin at impsec.org                       pgpk -a jhardin at wolfenet.com
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