alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET CURRENT_EVENTS Observed Malicious SSL Cert (POWERSTATS Proxy CnC?)"; flow:from_server,established; tls_cert_subject; content:""; nocase; isdataat:!1,relative; tls_cert_issuer; content:"C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3"; metadata: former_category CURRENT_EVENTS; reference:url,; classtype:trojan-activity; sid:2026679; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, deployment Perimeter, tag SSL_Malicious_Cert, signature_severity Major, created_at 2018_11_29, malware_family POWERSTAT, performance_impact Low, updated_at 2018_11_29;)

Added 2018-11-29 18:26:31 UTC

Topic revision: r1 - 2018-11-29 - TWikiGuest
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