MALWARE [PTsecurity] Suspicious SSL connection - Observed in Cobalt Strike pkt checker #4 - Suricata Rule 11002073 (ptresearch/attackdetection)

MALWARE [PTsecurity] Suspicious SSL connection - Observed in Cobalt Strike pkt checker #4

SID: 11002073Rev: 10 views

Sourceptresearch/attackdetection

CreatedOctober 15, 2017

UpdatedOctober 15, 2017

Classificationtrojan-activity

alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"MALWARE [PTsecurity] Suspicious SSL connection - Observed in Cobalt Strike pkt checker #4"; flow:established, to_client; dsize:53; stream_size:server, >,800; stream_size:server, <,1200; stream_size:client, >,100; stream_size:client, <,500; content:"|1603|"; depth:2; flowbits:noalert; flowbits:isset, FB363347_3; flowbits:unset, FB363347_3; flowbits:set, FB363347_4; threshold:type limit, track by_src, count 1, seconds 30; classtype:trojan-activity; metadata:created_at 2017_10_15; reference:url, github.com/ptresearch/AttackDetection; sid:11002073; rev:1;)

References

url	github.com/ptresearch/AttackDetection

MALWARE [PTsecurity] Suspicious SSL connection - Observed in Cobalt Strike pkt checker #4

References

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