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597a4d6704
- policy/ renamed to scripts/ - By default BROPATH now contains: - scripts/ - scripts/policy - scripts/site - *Nearly* all tests pass. - All of scripts/base/ is loaded by main.cc - Can be disabled by setting $BRO_NO_BASE_SCRIPTS - Scripts in scripts/base/ don't use relative path loading to ease use of BRO_NO_BASE_SCRIPTS (to copy and paste that script). - The scripts in scripts/base/protocols/ only (or soon will only) do logging and state building. - The scripts in scripts/base/frameworks/ add functionality without causing any additional overhead. - All "detection" activity happens through scripts in scripts/policy/. - Communications framework modified temporarily to need an environment variable to actually enable (ENABLE_COMMUNICATION=1) - This is so the communications framework can be loaded as part of the base without causing trouble when it's not needed. - This will be removed once a resolution to ticket #540 is reached.
31 lines
1,016 B
Text
31 lines
1,016 B
Text
##! This script takes MD5 sums of files transferred over HTTP and checks them with
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##! Team Cymru's Malware Hash Registry (http://www.team-cymru.org/Services/MHR/).
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##! By default, not all file transfers will have MD5 sums calculated. Read the
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##! documentation for the protocols/http/file-hash.bro script to see how to
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##! configure which transfers will have hashes calculated.
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export {
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redef enum Notice::Type += {
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## If the MD5 sum of a file transferred over HTTP
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Malware_Hash_Registry_Match
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};
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}
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event log_http(rec: HTTP::Info)
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{
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if ( rec?$md5 )
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{
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local hash_domain = fmt("%s.malware.hash.cymru.com", rec$md5);
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when ( local addrs = lookup_hostname(hash_domain) )
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{
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# 127.0.0.2 indicates that the md5 sum was found in the MHR.
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if ( 127.0.0.2 in addrs )
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{
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local url = HTTP::build_url_http(rec);
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local message = fmt("%s %s %s", rec$id$orig_h, rec$md5, url);
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NOTICE([$note=Malware_Hash_Registry_Match,
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$msg=message, $id=rec$id, $URL=url]);
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}
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}
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}
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}
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