ET MALWARE Possible Upatre or Dyre SSL Cert Jan 22 2015

Query · suricata

flow:established,to_client;
tls.cert_serial;
content:"00:"; startswith; bsize:26;
tls.cert_subject;
content:"C=CN, ST=ST"; fast_pattern;
tls.certs;
content:"|06 03 55 04 07|";
pcre:"/^.{2}(?P<var>[a-zA-Z0-9]{24}[01]).+?\x06\x03\x55\x04\x07.{2}(?P=var)/Rs";
Raw source ET MALWARE Possible Upatre or Dyre SSL Cert Jan 22 2015 · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tls $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE Possible Upatre or Dyre SSL Cert Jan 22 2015";
    flow:established,to_client;
    tls.cert_serial;
    content:"00:"; startswith; bsize:26;
    tls.cert_subject;
    content:"C=CN, ST=ST"; fast_pattern;
    tls.certs;
    content:"|06 03 55 04 07|";
    pcre:"/^.{2}(?P<var>[a-zA-Z0-9]{24}[01]).+?\x06\x03\x55\x04\x07.{2}(?P=var)/Rs";
    classtype:trojan-activity;
    sid:2020290; rev:6;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2015_01_23, deployment Perimeter, malware_family Upatre, confidence Medium, signature_severity Critical, tag SSL_Malicious_Cert, tag Exploit_Kit, tag Downloader, tag Upatre, updated_at 2022_03_27;
)

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