MALWARE [PTsecurity] Win32/Spy.Ursnif.BK SSL connection pkt checker #1

SID: 11002232Rev: 10 views
Sourceptresearch/attackdetection
CreatedNovember 14, 2017
UpdatedNovember 14, 2017
Classificationtrojan-activity
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"MALWARE [PTsecurity] Win32/Spy.Ursnif.BK SSL connection pkt checker #1"; flow:established, to_server; content:"|1703|"; depth:2; byte_test:2, >=,320, 1, relative; byte_test:2, <=,336, 1, relative; stream_size:server, >,928; stream_size:server, <,1998; stream_size:client, >,1003; stream_size:client, <,1540; flowbits:isset, FB391441_0; flowbits:unset, FB391441_0; flowbits:set, FB391441_1; flowbits:noalert; classtype:trojan-activity; metadata:created_at 2017_11_14; reference:url, github.com/ptresearch/AttackDetection; sid:11002232; rev:1;)

References

urlgithub.com/ptresearch/AttackDetection

Metadata

created at2017_11_14

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