Rule History

SID: 2034846 • Source: et/open

Versions (5)

Version DetailsCurrent

Rev: 4 • Dec 27, 2021, 12:00 PM

Message:

ET MALWARE Observed Malicious SSL Cert (showmypc.com)

Rule:

alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Observed Malicious SSL Cert (showmypc.com)"; flow:established,to_client; tls.cert_subject; content:"showmypc.com"; fast_pattern; pcre:"/CN=(?:[^\r\n]+?\.)?showmypc\.com(?!\.)/"; classtype:domain-c2; sid:2034846; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2021_12_27, deployment Perimeter, former_category INFO, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag RemoteAccessTool, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_07_04, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)

Created:

Dec 27, 2021, 12:00 PM

Updated:

Jul 4, 2024, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Sep 8, 2025, 9:34 PM

Filename:

rules/emerging-malware.rules