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Posted to dev@spamassassin.apache.org by Marc Perkel <ma...@perkel.com> on 2004/04/19 18:40:49 UTC

SA and Virus Warning Messages - Need Rule

Technically virus warning messages aren't spam - or are they?

When a virus sends a message it always uses a fake email address as the 
source so when virus filtering programs detect it - they send a warning 
message to the wrong person that there is a virus in the email - and of 
course - it's proud to announce what virus detector found it.

But - these message contain no useful information because the person who 
sent the virus never gets the message and some innocent person who the 
virus impersonated does the a wrong message that they have the virus.

I really think it's sort of a plot to sell virus software - but that's 
another debate.

The POINT!

These message are annoying and misleading and are of no useful value and 
I'd like to get rid of them. Looking for someone to write a virus bounce 
message rule so I can blackhole these messages.

Re: SA and Virus Warning Messages - Need Rule

Posted by David Muir Sharnoff <mu...@idiom.com>.
* These message are annoying and misleading and are of no useful value and 
* I'd like to get rid of them. Looking for someone to write a virus bounce 
* message rule so I can blackhole these messages.

I count these as spam.  Here are the rules that I use.  These rules
are under constant adjustment...

A couple of them would be hard to generalize w/o additional 
configuration directives.

Of the 3130 items I've blocked as spam today....

	106  match MUIR0021
	1391 match MUIR0022
	21   match MUIR0023
	19   match MUIR0024
	0    match MUIR0025
	0    match MUIR0027
	1762 match MUIR0028
	11   match MUIR0064

	and...

	35   were caught by ClamAV but not SpamAsssassin

-Dave


#
# This rule would be hard to generalize because it matches my specific
# network block.
#

header		__MUIR0021C	From =~ /Mail Delivery System|postmaster|mailer-daemon|<>|DrWeb-DAEMON|MAILER-IMP|Virus-Check/i
header		__MUIR0021D	Subject =~ /^(Mail Delivery System|Your Message Could Not Be Delivered|Delivery Notification|Returned mail: see transcript for details|Permanent Delivery Failure|Mail System Error - Returned Mail|Undeliverable Mail: Returned To Mailer|Undeliverable mail|Returned Mail: Error During Delivery|InterScan NT Alert)$/
header		__MUIR0021E	From =~ /masterrobot/
header		__MUIR0021F	Subject =~ /^(abort letter)$/
header		__MUIR0021G	Envelope-Sender =~ /MAILER-DAEMON/
header		__MUIR0021H	X-Envelope-From =~ /MAILER-DAEMON/
full		__MUIR0021I	/\AFrom MAILER-DAEMON\@/
full		__MUIR0021J	/\AFrom mailsrv\@/
header		__MUIR0021K	Subject =~ /Delivery Notification:/
full		__MUIR0021L	/\AFrom Mail-Administrator\@/
header		__MUIR0021M	Subject =~ /Mail Delivery/
meta		__MUIR0021A	(( __MUIR0021C || __MUIR0021D || __MUIR0021G || __MUIR0021H || __MUIR0021I || ( __MUIR0021E && __MUIR0021F) || ( __MUIR0021J && __MUIR0021K ) || ( __MUIR0021L && __MUIR0021M )) && ! __MUIR0018B )
full		MUIR0021B	/\A([^\n]|\n(?!\n))+\n\n.*\n\s*Received:(.|\n\s)*\[216\.240\.\d\d\.\d+\]/s
score		MUIR0021B	0.0
meta		MUIR0021	( __MUIR0021A && ! MUIR0021B )
describe	MUIR0021	Postmaster bounces w/o an idiom-network received line
score		MUIR0021	2.5


meta		MUIR0022	( ( MUIR0021 || MUIR0028 ) && ( MICROSOFT_EXECUTABLE || LARGE_HEX ))
describe	MUIR0022	Bounce or fraud with executables
score		MUIR0022	5.01

header		__MUIR0023A	Subject =~ /virus|Aviso_de_detecci/i
meta		MUIR0023	( __MUIR0021A && ( __MUIR0023A || __MUIR0024A ))
describe	MUIR0023	postmaster bounce with virus subject
score		MUIR0023	2.51

full		__MUIR0024A	/ScanMail (?:for Microsoft Exchange )?(?:has )?(?:detected|blocked) (?:a virus|an attachment)\b|Your attachment \S+ contained virus|detected an email from your email address containing a virus|O nosso Sistema AntiV.rus detectou um poss.vel v.rus num mail enviado|because contains an infected object|as it was found to contain virus|The original attachment contains a virus|Your attachment \S+ contained virus|Network Associates WebShield SMTP V\S+ .{0,25}on \S+ detected virus|infected with the \S+ virus and was successfully cleaned|Found the \S+ virus|Found threat: Content disallowed by site policy|which was infected with the \S+ virus|You have sent a virus infected mail|following message had attachment\(s\) which contained viruses|you sent to \S+ contains a virus|file \S+ has been replaced as it contains the \S+ virus|Found virus \S+ in file \S+ |Le message suivant contenait des fichiers joints avec des virus|Virus a .t. d.tect..? dans un mail que vous avez en!
 voy|Se ha detectado un virus en un mensaje enviado por Ud|Attention! \S+ sent you the message with the[\n\s]+VIRUS: \S+[\n\s]+It was rejected for delivery|\w+ anti-virus system has stopped the|The file met the blocking options set in the anti-virus system|the attachement included in your message was infected with a virus|Attachment \S+ was Deleted for the following reasons:\s*\n\s*Virus \S+ was found|This message is simply to warn you that your computer system may have a[\n\s]+virus present and should be checked|The mail system received a message from \S+ sent to\n\S+\nthat contains either infected or suspicious file\(s\) and it has|You have sent a virus infected mail.*\nwhich was quaratined to protect.*\nthe recipient|violated the content\s*\nfiltering rule Info:  .* has blocked by|A file attached to this email was removed\s*\nbecause it was infected with a virus|Your email message was blocked by the .*Virus.* and was not forwarded|The \S+ detected a virus in the attached !
 file listed|Antigen for Exchange found \S+ infected with VIRUS!
 |\(reaso
n: 550 X-Clamd-Found: \S+\)|is removed from here because it contains a virus|The file you have sent was infected with a virus but InterScan E-Mail VirusWall|A virus has been detected in an e-mail message sent by you|Receiver, InterScan has detected virus\(es\) in the e-mail attachment|You are receiving\s*\nthis message because you recently sent an e-mail message containing an\s*\nattachment which was flagged by|A virus was found in an Email message you sent|Norton AntiVirus found a virus in an attachment you \(.*?\) sent\b|A virus was found in an Email message you sent|Our content checker found[\n\s]+virus: \S+[\n\s]+in email presumably from you|eSafe detected a hostile content in this email|Antigen for Exchange found.*?infected with|Um virus foi encontrado numa mensagem de Email que acabou de|The mail message sent to you from.*?contained an attachment named.*?which contained the \S+ virus|contained a computer virus\. The delivery was blocked\.|Symantec AntiVirus found a vir!
 us in an attachment you|Please check your system for viruses, or ask your system administrator|Because it believes the message contains a virus|The Illegal attachment type was reported to be:[\s\n]+worm with|The attachment \S+ contained the virus \S+ and\b|One or more attachments were quarantined|The message you emailed to \S+ dated \S+ \S+ contains the \S+ virus in the \S+ attachment|Mail Transaction Failed - This mail couldn't be converted|Der Anhang \S+ enthielt den Virus \S+ und konnte|A message containing a virus was sent from your e-mail address|As a security measure our system cannot receive executable files|The message body contained \S+ virus\b|MAILSweeper found a VIRUS in a message from|The following mail was blocked since it contains sensitive content|Action taken: Deleted[\s\n]+Reason: Anti-Virus|Virus attachment file\(s\) found in your mail|Message sent to \S+ was quarantined because it contained|S I E  V I R U S  A L E R T| was blocked due to a content violati!
 on found in the email message|-{10,50}[\n\s]+RAV Antivirus res!
 ults[\n\
s]+-{10,50}|You sent an infected message|The attachment \S+ contained the virus/i
describe	MUIR0024	virus notification
meta		MUIR0024	(( __MUIR0023A || __MUIR0024B || MUIR0021 ) && __MUIR0024A )
score		MUIR0024	5.01
header		__MUIR0024B	Subject =~ /Report to Sender|Virus [fF]ound in message|Returned due to virus|Antigen found VIRUS|virus found in sent message|VIRUS \(.*?\) IN MAIL FROM YOU|This alert event was sent by eSafe Protect Gateway|Antigen found VIRUS|virus encontrado em mensagem enviada|^VIRUS ALERT\!$|Virus detected in: Mail Delivery|\[MailServer Notification\] To External Sender: a virus was found|VIRUS IN YOUR MAIL|has detected a Virus in your message|Illegal attachment type found in sent message|SAV detected a violation in a document you authored|Norton AntiVirus detected and quarantined a virus in a message you sent|To Sender file blocking settings matched and action taken|Virus Warning$|Virus Alert: Mail Delivery failure|SAV hat einen Virus in einem|VIRUS ALERT: \S+$|This is an alert from eSafe|Email return due to potentially unsafe attachment|Virus Found in (?:a )?message|virus found or matched file blocking|Spam mail warning notification|Virus Alert|You have sent a virus!
 |VIRUS en su email a sm|Banned Content Email - Deleted|Virus scan results|VIRUS FOUND in your message/


full		__MUIR0025A	/\A([^\n]|\n(?!\n))+\n\n.*\n\s*Received: /s
score		__MUIR0025A	0.0
meta		MUIR0025	( MUIR0021 && __MUIR0025A )
describe	MUIR0025	Bounce includes Received: lines but no reference idiom blocks
score		MUIR0025	3.5

header		__MUIR0027A	Subject =~ /Mailman results for|Majordomo results/
body		__MUIR0027B	/Command\?.*MIME|Command 'content-transfer-encoding:'/
meta		MUIR0027	( __MUIR0027A && __MUIR0027B )
describe	MUIR0027	MIME message sent to list subscribe address
score		MUIR0027	3.2

#
# This one is particularly hard to generalize but it catches a lot
# of virus bounce email.
#

full		MUIR0028	/\bReceived: (from \[(?!(127\.0\.0\.1|216\.240\.32.1))(\d+\.){3}\d+\] \((?:(?i)HELO)[ =]idiom\.com\)|(from\s+idiom\.com\n?|from \S+ \(HELO idiom\.com\)) \((\[|\S+\s*\[)?(?!(127\.0\.0\.1|216\.240\.32.1))(\d+\.){3}\d+\]?(\s*(\(may be forged\)|\(misconfigured sender\)|RDNS failed))?\))/
describe	MUIR0028	someone is pretending to be idiom
score		MUIR0028	2.51


body		__MUIR0064A	/Disallowed attach(?:ment)? type|Reason: "Ha sido encontrado un virus.|PROHIBITED FILE IN MESSAGE|550 Error: Message content rejected|Virus\(es\) found\. \S+ is infected with |Requested action not taken: Invalid file attachment|554 5.6.1 Body type not supported by Remote Host|Our content checker found|The message you sent contained an attachment which the recipient has chosen to block\.|has detected virus\(es\) in your e-mail attachment\.|The message and attachment, which contained a blocked extension, has been blocked\.|attachments that could contain malicious code\.|Your message was infected with a virus|Your message was infected by VIRUS|550 5\.7\.1 Message content rejected|Virus Found and Could Not Be Removed|This e-mail in its original form contained one or more attached files that were infected with a virus or|The following message contained restricted attachment|A problem with the message content was found|If the executable attachment you want to sen!
 d|email server does not accept executable file attachments|we don't accept email with executable content|This message was rejected due to a possible virus|Potentially dangerous file in MIME attachment|This message contains malware|5\d\d \S+ Virus Detected|Unsafe Windows attachment|A virus was detected in the[\s\n]+message|Virus found!|scanner intercepted it and stopped the entire message/i
meta		MUIR0064	( MUIR0021 && __MUIR0064A )
describe	MUIR0064	Bounce because of attchment
score		MUIR0064	2.51