Honeypots mailing list archives
Re: regarding malicious domains becoming inactive
From: "Andre D. Correa" <andre.correa () pobox com>
Date: Tue, 04 Nov 2008 16:22:21 +0000
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, as a maintainer of a black list myself - www.malwarepatrol.net, I can tell you what my policy is. We collect URLs pointing to Malware and analyze the binaries. If a Malware is found, it's URL and domain go to block lists. This process is fully automated. To keep the block lists fresh we visit daily each and every address in our database. Not just the active ones but also the unavailable. This way we catch URLs that go unreachable for some time and later reappear. This behavior is not rare, a very common situation is Malware hosted in free web providers, it may get unavailable really quickly because of bandwidth consumption limits but the next day it gets available again. If you don't have enough resources to verify all domains daily, but for instance just every week, I'd suggest you keep the infected domains in your list of signatures for one extra verification cycle (i.e. a domain is removed from the list just if it is unreachable on two consecutive verifications). Don't forget to make clear to your users and to domain administrators why you do this. Good luck! Best regards. - -------------------------------------------------------------------- Andre D. Correa, CISSP | Visite meus projetos pessoais: andre.correa (at) pobox.com | Visit my personal projects: http://andre.hiperlinks.com.br | - http://www.malwarepatrol.net/ Sao Paulo / SP / Brazil | - http://www.linuximq.net/ - -------------------------------------------------------------------- PGP public key and fingerprint: http://andre.hiperlinks.com.br/pgp.txt Key pair created at: 26/3/2000 - Key ID: 64444ED3 File MD5: 6cefb949fd04122dfabaebb964964f8b File SHA1: b3966e5136f706afb895e2f05c1a7234315c1529 - -------------------------------------------------------------------- Bhatnagar, Mayank wrote:
Hi, Often we find while analyzing malwares that malicious domains become inactive after some period of time. They may be active during initial period of activity, malwares when executed connecting to these domains, these domains then sending malicious files....binaries etc.....but just as soon as this information is being known or the behavior has been captured by IDS/IPS signatures blocking this domain, soon the domain itself become inactive. What do you feel should be the responsibility of IDS/IPS solution providers? I feel keeping track of such domains (live or down) in an automated manner may be one possibility, keeping a signature for some time as a measure of protection another. Also maintaining blacklists of these domains may be helpful. How should one handle such cases? Any ideas? Thanks & Regards, Mayank "DISCLAIMER: This message is proprietary to iPolicy Networks-Security Products division of Tech Mahindra Limited and is intended solely for the use of the individuals to whom it is addressed. It may contain privileged or confidential information and should not be circulated or used for any purpose other than for what is intended. If you have received this message in error, please notify the originator immediately. If you are not the intended recipient, you are notified that you are strictly prohibited from using, copying, altering, or disclosing the contents of this message. iPolicy Networks-Security Products division of Tech Mahindra Limited accepts no responsibility for loss or damage arising from the use of the information transmitted by this email including damage from virus." ------------------------------------------------------------------------ "DISCLAIMER: This message is proprietary to iPolicy Networks - Security Products Division of Tech Mahindra Limited and is intended solely for the use of the individuals to whom it is addressed. It may contain privileged or confidential information and should not be circulated or used for any purpose other than for what is intended. If you have received this message in error, please notify the originator immediately. If you are not the intended recipient, you are notified that you are strictly prohibited from using, copying, altering, or disclosing the contents of this message. iPolicy Networks - Security Products Division of Tech Mahindra Limited accepts no responsibility for loss or damage arising from the use of the information transmitted by this email including damage from virus."
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Current thread:
- Picviz 0.4 released Sebastien Tricaud (Oct 27)
- regarding malicious domains becoming inactive Bhatnagar, Mayank (Nov 04)
- Re: regarding malicious domains becoming inactive Andre D. Correa (Nov 04)
- Re: regarding malicious domains becoming inactive Sushant Sinha (Nov 04)
- Re: regarding malicious domains becoming inactive yelukati mahendra (Nov 05)
- regarding malicious domains becoming inactive Bhatnagar, Mayank (Nov 04)