Versions (4)
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Rev: 1 • May 8, 2023, 12:00 PMET MALWARE Win32/KLBanker Activity (GET)
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/KLBanker Activity (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".php"; endswith; http.user_agent; content:"|22|Mozilla/5.0|20|"; fast_pattern; startswith; content:"|22|"; endswith; http.header_names; content:!"Referer|0d 0a|"; reference:md5,787ebc17ec47acb30b69a4978717b4dc; reference:url,twitter.com/StopMalvertisin/status/1653317886289797120; classtype:trojan-activity; sid:2045613; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_05_08, deployment Perimeter, malware_family Win32_KLBanker, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_05_08; target:src_ip;)
May 8, 2023, 12:00 PM
May 8, 2023, 12:00 PM
May 8, 2023, 11:00 PM
Aug 22, 2025, 9:34 PM
rules/emerging-malware.rules