Grreting card scams

[Julian Field]

Glenn Steen wrote:
> On 27/07/07, Julian Field <MailScanner at ecs.soton.ac.uk> wrote:
>   
>> Richard Frovarp wrote:
>>     
>>> Matt Kettler wrote:
>>>       
>>>> Glenn Steen wrote:
>>>>
>>>>         
>>>>> On 27/07/07, Matt Kettler <mkettler at evi-inc.com> wrote:
>>>>>
>>>>>           
>>>>>> Rick Cooper wrote:
>>>>>>
>>>>>> Given that running clamscan on the email file outside of MailScanner
>>>>>> detects it
>>>>>> as a virus, I've already conclusively proven clamav has the signature
>>>>>> and it
>>>>>> works properly.
>>>>>>
>>>>>> One observation, though, the specific test messages I used detected as
>>>>>> 1221 not
>>>>>> 1222, but they're all related.
>>>>>>
>>>>>> ecardspam1.eml: Email.Phishing.RB-1221 FOUND
>>>>>> ecardspam2.eml: Email.Phishing.RB-1221 FOUND
>>>>>> ecardspam3.eml: Email.Phishing.RB-1221 FOUND
>>>>>>
>>>>>> However, if you insist:
>>>>>> # sigtool --list-sigs|grep Email.Phishing.RB-1222
>>>>>> Email.Phishing.RB-1222
>>>>>>
>>>>>> Yes, it's there. Yes, clamscan can use it, and clamscan properly
>>>>>> detects the
>>>>>> messages as viruses when executed manually. No, clamav via MailScanner
>>>>>> cannot
>>>>>> detect it.
>>>>>>
>>>>>>
>>>>>>             
>>>>> Could this perhaps have anything to do with how clam gets fed the
>>>>> message in MailScanner....? If I'm not completely senile (always a
>>>>> possibility:-), MS doesn't feed it the complete message, hence some
>>>>> newstyle sigs will never (be able to) trigger.
>>>>>
>>>>>           
>>>> That goes back to my original statement that I felt that the
>>>> difference had to
>>>> do with the fact that my MailScanner isn't up-to-date.
>>>>
>>>> I'm quite convinced that this is a MailScanner interfacing issue, as
>>>> it is quite
>>>> clear clamav is working properly outside MS.
>>>>
>>>> (Note: Personally I don't have a problem with this "issue", I was
>>>> merely joining
>>>> in and commenting on it hoping my observations could help others who
>>>> do have
>>>> problems with it.)
>>>>
>>>>
>>>>
>>>>
>>>>         
>>> I don't have that one tripping either. I figure it is due to the fact
>>> that I stop a lot at the MTA and delete high scoring spam so they
>>> never even reach clam.
>>>       
>> I have now written support for passing entire messages to the ClamAV
>> scanners. There is a new setting called "Reliably Detect Spam With
>> ClamAV" which is "no" by default as it has a speed impact. It has no
>> effect when the ClamAV scanners are not being used.
>>
>> I'll release a new beta shortly.
>>
>> Jules
>>     
> You know what Jules... You're an absolute wonder!:)
> Was that a book you had on your list, or is it gone already?
>   
The book is still there...

Jules

-- 
Julian Field MEng CITP
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