#alert udp ![$DNS_SERVERS,$SMTP_SERVERS] any -> $DNS_SERVERS 53 (msg:"ET POLICY Possible Spambot Host DNS MX Query High Count"; content: "|01 00|"; offset: 2; depth: 4; content: "|00 0f 00 01|"; distance: 8; threshold:type both, count 30, seconds 10, track by_src; reference:url,doc.emergingthreats.net/2003330; classtype:bad-unknown; sid:2003330; rev:6; metadata:created_at 2010_07_30, updated_at 2010_07_30;)

Added 2018-09-13 19:38:43 UTC

Please enter documentation, comments, false positives, or concerns with this signature. Press the Attach button below to add samples or Pcaps.

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Added 2018-09-13 17:53:13 UTC

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#alert udp ![$DNS_SERVERS,$SMTP_SERVERS] any -> $DNS_SERVERS 53 (msg:"ET POLICY Possible Spambot Host DNS MX Query High Count"; content: "|01 00|"; offset: 2; depth: 4; content: "|00 0f 00 01|"; distance: 8; threshold:type both, count 30, seconds 10, track by_src; reference:url,doc.emergingthreats.net/2003330; classtype:bad-unknown; sid:2003330; rev:6; metadata:created_at 2010_07_30, updated_at 2010_07_30;)

Added 2017-08-07 20:56:38 UTC

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#alert udp ![$DNS_SERVERS,$SMTP_SERVERS] any -> $DNS_SERVERS 53 (msg:"ET POLICY Possible Spambot Host DNS MX Query High Count"; content: "|01 00|"; offset: 2; depth: 4; content: "|00 0f 00 01|"; distance: 8; threshold:type both, count 30, seconds 10, track by_src; reference:url,doc.emergingthreats.net/2003330; classtype:bad-unknown; sid:2003330; rev:6;)

Added 2011-10-12 19:13:17 UTC

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#alert udp ![$DNS_SERVERS,$SMTP_SERVERS] any -> $DNS_SERVERS 53 (msg:"ET POLICY Possible Spambot Host DNS MX Query High Count"; content: "|01 00|"; offset: 2; depth: 4; content: "|00 0f 00 01|"; distance: 8; threshold:type both, count 30, seconds 10, track by_src; classtype:bad-unknown; reference:url,doc.emergingthreats.net/2003330; sid:2003330; rev:6;)

Added 2011-09-14 22:26:14 UTC

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#alert udp ![$DNS_SERVERS,$SMTP_SERVERS] any -> $DNS_SERVERS 53 (msg:"ET POLICY Possible Spambot Host DNS MX Query High Count"; content: "|01 00|"; offset: 2; depth: 4; content: "|00 0f 00 01|"; distance: 8; threshold:type both, count 30, seconds 10, track by_src; classtype:bad-unknown; reference:url,doc.emergingthreats.net/2003330; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/POLICY/POLICY_TROJAN_DNS_Lookups; sid:2003330; rev:6;)

Added 2011-02-04 17:22:24 UTC

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alert udp ![$DNS_SERVERS,$SMTP_SERVERS] any -> $DNS_SERVERS 53 (msg:"ET POLICY Possible Spambot Host DNS MX Query High Count"; content: "|01 00|"; offset: 2; depth: 4; content: "|00 0f 00 01|"; distance: 8; threshold:type both, count 30, seconds 10, track by_src; classtype:bad-unknown; reference:url,doc.emergingthreats.net/2003330; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/POLICY/POLICY_TROJAN_DNS_Lookups; sid:2003330; rev:6;)

Added 2009-02-11 19:15:24 UTC

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alert udp ![$DNS_SERVERS,$SMTP_SERVERS] any -> $DNS_SERVERS 53 (msg:"ET POLICY Possible Spambot Host DNS MX Query High Count"; content: "|01 00|"; offset: 2; depth: 4; content: "|00 0f 00 01|"; distance: 8; threshold:type both, count 30, seconds 10, track by_src; classtype:bad-unknown; reference:url,doc.emergingthreats.net/2003330; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/POLICY/POLICY_TROJAN_DNS_Lookups; sid:2003330; rev:6;)

Added 2009-02-11 19:15:24 UTC

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alert udp ![$DNS_SERVERS,$SMTP_SERVERS] any -> $DNS_SERVERS 53 (msg:"ET POLICY Possible Spambot Host DNS MX Query High Count"; content: "|01 00|"; offset: 2; depth: 4; content: "|00 0f 00 01|"; distance: 8; threshold:type both, count 30, seconds 10, track by_src; classtype:bad-unknown; sid:2003330; rev:5;)

Added 2008-06-06 20:49:01 UTC

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alert udp ![$DNS_SERVERS,$SMTP_SERVERS] any -> $DNS_SERVERS 53 (msg:"ET POLICY Possible Spambot Host DNS MX Query High Count"; content: "|01 00|"; offset: 2; depth: 4; content: "|00 0f 00 01|"; distance: 8; threshold:type both, count 30, seconds 10, track by_src; classtype:bad-unknown; sid:2003330; rev:5;)

Added 2008-06-06 20:49:01 UTC

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alert udp ![$DNS_SERVERS,$SMTP_SERVERS] any -> $DNS_SERVERS 53 (msg:"ET POLICY Possible Spambot -- Host DNS MX Query High Count"; content: "|01 00|"; offset: 2; depth: 4; content: "|00 0f 00 01|"; distance: 8; threshold:type both, count 30, seconds 10, track by_src; classtype:bad-unknown; sid:2003330; rev:4;)

Added 2008-02-22 10:39:11 UTC

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alert udp ![$DNS_SERVERS,$SMTP_SERVERS] any -> $DNS_SERVERS 53 (msg:"ET POLICY Possible Spambot -- Host DNS MX Query High Count"; content: "|01 00|"; offset: 2; depth: 4; content: "|00 0f 00 01|"; distance: 8; threshold:type both, count 30, seconds 10, track by_src; classtype:bad-unknown; sid:2003330; rev:4;)

Added 2008-02-22 10:39:11 UTC

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alert udp !$SMTP_SERVERS any -> $DNS_SERVERS 53 (msg:"ET POLICY Possible Spambot -- Host DNS MX Query High Count"; content: "|01 00|"; offset: 2; depth: 4; content: "|00 0f 00 01|"; distance: 8; threshold:type both, count 30, seconds 10, track by_src; classtype:bad-unknown; sid:2003330; rev:3;)

Added 2008-01-31 18:48:10 UTC

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alert udp !$SMTP_SERVERS any -> $DNS_SERVERS 53 (msg:"ET POLICY Possible Spambot -- Host DNS MX Query High Count"; content: "|01 00|"; offset: 2; depth: 4; content: "|00 0f 00 01|"; distance: 8; threshold:type both, count 30, seconds 10, track by_src; classtype:bad-unknown; sid:2003330; rev:3;)

Added 2008-01-31 18:48:10 UTC

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alert udp !$SMTP_SERVERS any -> $DNS_SERVERS 53 (msg:"BLEEDING-EDGE POLICY Possible Spambot -- Host DNS MX Query High Count"; content: "|01 00|"; offset: 2; depth: 4; content: "|00 0f 00 01|"; distance: 8; threshold:type both, count 30, seconds 10, track by_src; classtype:bad-unknown; sid:2003330; rev:2;)

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