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Rule History

SID: 2527020 • Source: et/open

Versions (79)

Rev: 1621
May 29, 2026, 8:35 PM
Current
Rev: 1620
May 28, 2026, 9:09 PM
Archived
Rev: 1619
May 27, 2026, 9:21 PM
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May 26, 2026, 8:12 PM
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May 19, 2026, 8:34 PM
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May 14, 2026, 10:34 PM
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May 13, 2026, 9:35 PM
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May 12, 2026, 9:34 PM
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Mar 10, 2026, 8:34 PM
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Mar 9, 2026, 8:34 PM
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Mar 6, 2026, 10:34 PM
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Mar 5, 2026, 11:34 PM
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Mar 4, 2026, 9:34 PM
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Mar 3, 2026, 10:34 PM
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Mar 2, 2026, 10:34 PM
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Feb 27, 2026, 9:34 PM
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Feb 26, 2026, 9:34 PM
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Feb 25, 2026, 10:34 PM
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Feb 20, 2026, 10:34 PM
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Feb 17, 2026, 10:34 PM
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Feb 16, 2026, 10:35 PM
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Feb 13, 2026, 10:34 PM
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Feb 12, 2026, 10:34 PM
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Feb 11, 2026, 10:34 PM
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Feb 10, 2026, 11:34 PM
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Rev: 1515
Feb 9, 2026, 10:34 PM
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Version Details

Rev: 1604 • Dec 9, 2021, 12:00 PM

ET Threatview.io High Confidence Cobalt Strike C2 IP group 21

alert ip [18.64.229.146,217.79.243.148,194.37.97.153,168.61.180.98,144.217.207.19,149.255.35.131,193.201.9.229,104.128.92.144,137.184.98.78,38.132.122.216,146.70.24.135,146.70.24.145,185.244.150.102,139.60.161.45,5.39.223.130,143.110.233.88,51.79.161.200,104.156.63.145,23.227.190.205,164.90.154.97,3.20.104.56,18.217.66.68,104.128.92.144,40.69.35.53,54.193.134.191,8.210.194.59,167.99.80.207,144.217.207.19,139.155.190.84,82.156.241.148,81.70.229.78,82.156.2.25,52.175.122.61,47.102.117.86,23.224.70.227,39.99.173.55,139.198.174.135,139.198.181.156,132.232.40.201,139.198.108.26,111.230.198.142,106.54.69.144,1.117.154.185,111.229.51.128,139.155.190.117,168.61.180.98,23.224.152.138,23.224.152.138,104.243.41.123,106.55.153.204] any -> $HOME_NET any (msg:"ET Threatview.io High Confidence Cobalt Strike C2 IP group 21"; reference:url,threatview.io/Downloads/High-Confidence-CobaltStrike-C2%20-Feeds.txt; threshold:type limit, track by_src, seconds 3600, count 1; classtype:misc-attack; sid:2527020; rev:1604; metadata:affected_product Any, attack_target Any, deployment Perimeter, tag Threatview_CS, signature_severity Major, created_at 2021_12_09, updated_at 2026_05_12;)

Dec 9, 2021, 12:00 PM

May 12, 2026, 12:00 PM

Feb 9, 2026, 10:34 PM

May 12, 2026, 9:34 PM

May 13, 2026, 9:35 PM

rules/threatview_CS_c2.rules