alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MOBILE_MALWARE Observed Malicious SSL Cert (DonotGroup? Android 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 MOBILE_MALWARE; classtype:trojan-activity; sid:2027195; rev:1; metadata:affected_product Android, attack_target Mobile_Client, deployment Perimeter, tag APT, tag DonotGroup?, signature_severity Major, created_at 2019_04_12, performance_impact Low, updated_at 2019_04_12;)

Added 2019-04-12 18:46:10 UTC

This topic: Main > 2027195
Topic revision: r1 - 2019-04-12 - TWikiGuest
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