alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Blackenergy Bot Checkin to C&C (2)"; flow:to_server,established; content:"POST"; nocase; http_method; content:"id="; http_client_body; nocase; content:"&cn="; http_client_body; nocase; content:"&bid="; http_client_body; nocase; fast_pattern:only; content:!"Referer|3a|"; http_header; content:!".bitdefender.net|0d 0a|"; http_header; reference:url,doc.emergingthreats.net/2010875; classtype:trojan-activity; sid:2010875; rev:10;)

Added 2017-01-27 17:01:25 UTC


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Blackenergy Bot Checkin to C&C (2)"; flow:to_server,established; content:"POST"; nocase; http_method; content:"id="; http_client_body; nocase; content:"&cn="; http_client_body; nocase; content:"&bid="; http_client_body; nocase; fast_pattern:only; content:!"Referer|3a|"; http_header; reference:url,doc.emergingthreats.net/2010875; classtype:trojan-activity; sid:2010875; rev:9;)

Added 2015-06-23 00:31:02 UTC

Hello, During normal behavior of legitimate Bitdefender Antivirus this signature generates FP. Please modify the rule. Base information: https://www.bitdefender.com/ - Oficial web site http://www.shouldiremoveit.com/Bitdefender-Antivirus-Free-Edition-18013-program.aspx - Files installed with Bitdefender Antivirus (bdnc.dll - BitDefender? Nimbus Client (Bitdefender Nimbus Client)) https://www.threatcrowd.org/domain.php?domain=elb.nvi.amz.nimbus.bitdefender.net Threatcrowed Infor about URL from PCAP

Description for Nimbus: nimbus.bitdefender.net is the cloud server where all links are checked for malware/phishing and content, nimbus.bitdefender.net filter is part of the Content Control module.

PCAP:

POST /url/status HTTP/1.1 Host: elb-nvi-amz.nimbus.bitdefender.net User-Agent: BDNC v2.2.2.35971 Sep 22 2016 15:54:32 windows_amd64 Accept: / Connection: Keep-Alive Accept-Encoding: gzip,deflate X-Nimbus-UUID: xxxxxxxxxxxxxxxxxx X-Nimbus-ClientID: xxxxxxxxxxxxxxxxxxxxxxxx Content-Type: application/octet-stream Content-Length: 1400

http://metrics.hpe.com/b/ss/.....................................................DATA.........................................................01&AQE=1

HTTP/1.1 200 OK Content-Type: application/octet-stream Date: Thu, 26 Jan 2017 16:57:10 GMT x-nimbus-zone: nvi-amz X-Processing-Time: 4 Content-Length: 12 Connection: keep-alive

............

POST /url/status HTTP/1.1 Host: elb-nvi-amz.nimbus.bitdefender.net User-Agent: BDNC v2.2.2.35971 Sep 22 2016 15:54:32 windows_amd64 Accept: / Connection: Keep-Alive Accept-Encoding: gzip,deflate X-Nimbus-UUID: xxxxxxxxxxxxxxxxxxxxxxxxx X-Nimbus-ClientID: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Content-Type: application/octet-stream Content-Length: 158

http://visitor-servic......................................DATA.............

HTTP/1.1 200 OK Content-Type: application/octet-stream Date: Thu, 26 Jan 2017 16:57:21 GMT x-nimbus-zone: nvi-amz X-Processing-Time: 2 Content-Length: 12 Connection: keep-alive

............

Thanks! Regards!

-- MaksymParpaley - 2017-01-27


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Blackenergy Bot Checkin to C&C (2)"; flow:to_server,established; content:"POST"; nocase; http_method; content:"id="; http_client_body; nocase; content:"&cn="; http_client_body; nocase; content:"&bid="; http_client_body; nocase; fast_pattern:only; content:!"Referer|3a|"; http_header; reference:url,doc.emergingthreats.net/2010875; classtype:trojan-activity; sid:2010875; rev:9;)

Added 2015-06-22 18:24:09 UTC


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Blackenergy Bot Checkin to C&C (2)"; flow:to_server,established; content:"POST"; nocase; http_method; content:"id="; http_client_body; nocase; content:"&cn="; http_client_body; nocase; content:"&bid="; http_client_body; nocase; fast_pattern:only; reference:url,doc.emergingthreats.net/2010875; classtype:trojan-activity; sid:2010875; rev:8;)

Added 2014-09-24 18:17:05 UTC


alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET TROJAN Blackenergy Bot Checkin to C&C (2)"; flow:to_server,established; content:"POST"; nocase; http_method; content:"id="; http_client_body; nocase; content:"&ln="; http_client_body; nocase; content:"&cn="; http_client_body; nocase; content:"&nt="; http_client_body; nocase; content:"&bid="; http_client_body; nocase; reference:url,doc.emergingthreats.net/2010875; classtype:trojan-activity; sid:2010875; rev:6;)

Added 2012-03-16 17:40:55 UTC


alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET TROJAN Blackenergy Bot Checkin to C&C (2)"; flow:to_server,established; content:"POST"; http_method; content:"id="; http_client_body; nocase; content:"&ln="; http_client_body; nocase; content:"&cn="; http_client_body; nocase; content:"&nt="; http_client_body; nocase; content:"&bid="; http_client_body; nocase; reference:url,doc.emergingthreats.net/2010875; classtype:trojan-activity; sid:2010875; rev:5;)

Added 2011-10-12 19:30:47 UTC


alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET TROJAN Blackenergy Bot Checkin to C&C (2)"; flow:to_server,established; content:"POST"; http_method; content:"id="; http_client_body; nocase; content:"&ln="; http_client_body; nocase; content:"&cn="; http_client_body; nocase; content:"&nt="; http_client_body; nocase; content:"&bid="; http_client_body; nocase; classtype:trojan-activity; reference:url,doc.emergingthreats.net/2010875; sid:2010875; rev:5;)

Added 2011-09-14 22:43:57 UTC


alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET TROJAN Blackenergy Bot Checkin to C&C (2)"; flow:to_server,established; content:"POST"; http_method; content:"id="; http_client_body; nocase; content:"&ln="; http_client_body; nocase; content:"&cn="; http_client_body; nocase; content:"&nt="; http_client_body; nocase; content:"&bid="; http_client_body; nocase; classtype:trojan-activity; reference:url,doc.emergingthreats.net/2010875; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/VIRUS/TROJAN_Blackenergy; sid:2010875; rev:5;)

Added 2011-02-04 17:30:33 UTC


alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET TROJAN Blackenergy Bot Checkin to C&C (2)"; flow:to_server,established; content:"POST "; depth:5; content:"|0d 0a 0d 0a|"; content:"id="; nocase; distance:0; content:"&ln="; nocase; content:"&cn="; nocase; content:"&nt="; nocase; content:"&bid="; nocase; classtype:trojan-activity; reference:url,doc.emergingthreats.net/2010875; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/VIRUS/TROJAN_Blackenergy; sid:2010875; rev:3;)

Added 2010-03-08 13:53:45 UTC


alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET TROJAN Blackenergy Bot Checkin to C&C (2)"; flow:to_server,established; content:"POST "; depth:5; content:"|0d 0a 0d 0a|"; content:"id="; nocase; distance:0; content:"&ln="; nocase; content:"&cn="; nocase; content:"&nt="; nocase; content:"&bid="; nocase; classtype:trojan-activity; reference:url,doc.emergingthreats.net/2010875; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/VIRUS/TROJAN_Blackenergy; sid:2010875; rev:3;)

Added 2010-03-08 13:53:45 UTC


alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET TROJAN Blackenergy Bot Checkin to C&C (2)"; flow:to_server,established; content:"POST "; depth:5; content:"|0d 0a 0d 0a|id="; nocase; content:"&ln="; distance:0; nocase; content:"&cn="; nocase; distance:0; content:"&nt="; nocase; distance:0; content:"&bid="; nocase; distance:0; classtype:trojan-activity; reference:url,doc.emergingthreats.net/2010875; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/VIRUS/TROJAN_Blackenergy; sid:2010875; rev:2;)

Added 2010-03-04 21:00:45 UTC


alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET TROJAN Blackenergy Bot Checkin to C&C (2)"; flow:to_server,established; content:"POST "; depth:5; content:"|0d 0a 0d 0a|id="; nocase; content:"&ln="; distance:0; nocase; content:"&cn="; nocase; distance:0; content:"&nt="; nocase; distance:0; content:"&bid="; nocase; distance:0; classtype:trojan-activity; reference:url,doc.emergingthreats.net/2010875; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/VIRUS/TROJAN_Blackenergy; sid:2010875; rev:2;)

Added 2010-03-04 21:00:45 UTC


alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET TROJAN Blackenergy Bot Checkin to C&C (2)"; flow:to_server,established; content:"POST "; depth:5; content:"|0d 0a 0d 0a|id="; nocase; content:"&ln="; distance:0; nocase; content:"&cn="; nocase; distance:0; content:"&nt="; nocase; distance:0; content:"&bid="; nocase; distance:0; classtype:trojan-activity; sid:2010875; rev:1;)

Added 2010-03-04 20:45:45 UTC


Topic revision: r2 - 2017-01-27 - MaksymParpaley
 
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