> nyx ~ # dspam --user ste...@bajic.ch --deliver=summary --stdout < 
> jari.juslin.eml
> X-DSPAM-Result: ste...@bajic.ch; result="Spam"; class="Virus"; 
> probability=1.0000; confidence=1.00; signature=4,4c1680df18449748112346
> Return-Path: <lawbreak...@seawolfchile.cl>
> X-Original-To: z...@localhost
> Delivered-To: z...@localhost
> Received: from terra.nblnetworks.fi (localhost [127.0.0.1])
>         by terra.nblnetworks.fi (Postfix) with ESMTP id C42669B243
>         for <z...@localhost>; Mon, 14 Jun 2010 15:52:03 +0300 (EEST)
> Received: from mail.netsonic.fi [194.29.192.90]
>         by terra.nblnetworks.fi with IMAP (fetchmail-6.3.9-rc2)
>         for <z...@localhost> (single-drop); Mon, 14 Jun 2010 15:52:03 +0300 
> (EEST)
> Received: from netsonic.fi ([unix socket])
>          by mail.netsonic.fi (Cyrus v2.3.7-Invoca-RPM-2.3.7-4mke) with LMTPA;
>          Mon, 14 Jun 2010 16:51:58 +0300
> X-Sieve: CMU Sieve 2.3
> Received: from leimasin.iki.fi (leimasin.iki.fi [212.16.98.49])
>         by netsonic.fi (Postfix) with ESMTP id 07D901F11AA0
>         for <nanos...@netsonic.fi>; Mon, 14 Jun 2010 16:51:57 +0300 (EEST)
> Received: from ikiaikainen.iki.fi (r...@ikiaikainen.iki.fi [212.16.98.54])
>         by leimasin.iki.fi (8.13.8/8.13.4) with ESMTP id o5ECoqxk002492
>         for <jari.jus...@asetus1.silppuri.iki.fi>; Mon, 14 Jun 2010 15:50:52
> +0300 (EEST):
> Received: from jrkh.qtrduaf.com ([83.153.36.71])
>         by ikiaikainen.iki.fi (8.14.4/8.14.4) with SMTP id o5ECoogw018334
>         for <jari.jus...@iki.fi>; Mon, 14 Jun 2010 15:50:51 +0300 (EEST)
> Message-ID: <4c1624e1.9060...@horngshiue.com>
> Date: Mon, 14 Jun 2010 14:49:21 +0200
> From: Brindamour Siew <lawbreak...@seawolfchile.cl>
> MIME-Version: 1.0
> To: Baillet Segerson <jari.jus...@iki.fi>
> Subject: [SPAM] "We will keep the sun
> Content-Type: application/octet-stream; name="latterly.rtf"
> Content-Transfer-Encoding: base64
> X-Spam-Status: No, score=2.2 required=5.0 tests=RCVD_IN_BL_SPAMCOP_NET
>         autolearn=disabled version=3.2.5
> X-Spam-Level: **
> X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on leimasin.iki.fi
> X-DSPAM-Result: Virus
> X-DSPAM-Processed: Mon Jun 14 21:19:59 2010
> X-DSPAM-Confidence: 1.0000
> X-DSPAM-Improbability: 1 in 98689409 chance of being ham
> X-DSPAM-Probability: 1.0000
> X-DSPAM-Signature: 4,4c1680df18449748112346
> 
> e1xydGYxXGFuc2lcYW5zaWNwZzEyNTFcZGVmZjBcZGVmbGFuZzEwNDl7XGZvbnR0Ymx7XGYw
> XGZzd2lzc1xmcHJxMlxmY2hhcnNldDIwNHtcKlxmbmFtZSBBcmlhbDt9QXJpYWwgQ1lSO317
> XGYxXGZzd2lzc1xmY2hhcnNldDIwNHtcKlxmbmFtZSBBcmlhbDt9QXJpYWwgQ1lSO319DQp7
> XGNvbG9ydGJsIDtccmVkMFxncmVlbjBcYmx1ZTI1NTtccmVkMFxncmVlbjEyOFxibHVlMDt9
> DQp7XCpcZ2VuZXJhdG9yIE1zZnRlZGl0IDQuNS4zMC4zOTc0O31cdmlld2tpbmQ0XHVjMVxw
> YXJkXHNhMjAwXHNsMjc2XHNsbXVsdDFcbGFuZzlcZjBcZnMzMntcZmllbGR7XCpcZmxkaW5z
> dHtIWVBFUkxJTksgImh7XCpcZGQgNC41LjMwLjM5NzQ7fXR0cDovL2NsdWJraW5nLmluZm8i
> fX17XGZsZHJzbHR7XHVsXGNmMSBodHRwOi8vY2x1YmtpbmcuaW5mb319fVxmMFxjZjFcYlxm
> czMyICAtIE9OTElORSBDQVNJTk8hXHBhcg0KXGxpbmVcY2YyXGJcZjBcZnMyOCBWSVAgQ0xV
> QiBDYXNpbm8gaXMgYSBncmVhdCBvbmxpbmUgY2FzaW5vIHRoYXQgb2ZmZXJzIHRoZSB1bmlx
> dWUgY29tYmluYXRpb24gb2YgdG9wIHF1YWxpdHkgZ2FtZXMsIGhpZ2ggcGF5b3V0cyBhbmQg
> YSAyNC83IHByb2Zlc3Npb25hbCBjdXN0b21lciBzdXBwb3J0LlxwYXINClxwYXIxMDAgcHJv
> Z3Jlc3NpdmUgZ2FtZXMgd2l0aCB0b3dlcmluZyBqYWNrcG90cywgd2hpY2ggYXJlIHJlYWR5
> IHRvIGV4cGxvZGUgYW5kIGNhbiBtYWtlIG11bHRpLW1pbGxpb25haXJlcyBvdXQgb2YgVklQ
> IENMVUIgcGxheWVycyEgRG93bmxvYWQgdGhlIHNvZnR3YXJlIGZvciBmcmVlLCBwaWNrIHVw
> IHRoZSBpbmNyZWRpYmxlICQ3NzcgV2VsY29tZSBCb251cyBvbiB5b3Ugd2F5IGluIGFuZCBz
> dGFydCBwbGF5aW5nICYgd2lubmluZyFccGFyDQp9DQoA
> 
> !DSPAM:4,4c1680df18449748112346!
> 
> nyx ~ #
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> 
> See? The message is tagged as Virus infected. I have additional signatures in 
> ClamAV. Lets do the scan again but this time from the command line:
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> nyx ~ # clamscan --verbose --stdout --scan-mail=yes jari.juslin.eml
> Scanning jari.juslin.eml
> jari.juslin.eml: Sanesecurity.Casino.11006.UNOFFICIAL FOUND
> 
> ----------- SCAN SUMMARY -----------
> Known viruses: 1033621
> Engine version: 0.96.1
> Scanned directories: 0
> Scanned files: 1
> Infected files: 1
> Data scanned: 0.00 MB
> Data read: 0.00 MB (ratio 0.00:1)
> Time: 5.097 sec (0 m 5 s)
> nyx ~ #
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> 
> It takes a bunch of seconds to load clamscan but that is because I have over 
> 1 Million signatures in ClamAV. DSPAM does not use clamscan but uses the 
> CalmAV in daemon mode so in real environment that processing would be faster.
> 
> IMHO attachments are better handled in something else then DSPAM. Off course 
> I could enable DSPAM to parse a bunch of well known text formats and allow 
> DSPAM to tokenize their content but I really think that this is not such a 
> biright idea.
> 

Hi,

we've been hit by this kind of spam pretty hard. My version of ClamAV doesn't 
detect
them as viruses. The 'solution' I used was to first decode the attachement to 
plain text,
add it as a header and only then pass it to dSpam.
It's not universal, but our false negatives counts are much much lower.

Jiri Novosad



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