Versions (4)
Version DetailsCurrent
Rev: 1 • Jun 12, 2023, 12:00 PMET MALWARE Suspected Stealth Soldier Backdoor Related Activity M1 (GET)
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Suspected Stealth Soldier Backdoor Related Activity M1 (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/mkv/MS"; startswith; fast_pattern; pcre:"/\.(?:txt|exe)$/R"; http.header_names; content:"|0d 0a|UA-CPU|0d 0a|"; content:!"Referer"; reference:md5,0db6239ad0755392c31a09e58773cd3b; reference:md5,a418886a31852be25064d3573f2bc87d; reference:md5,1ea8a827ad4c565b1c2ae43b0a020092; reference:url,research.checkpoint.com/2023/stealth-soldier-backdoor-used-in-targeted-espionage-attacks-in-north-africa/; classtype:trojan-activity; sid:2046200; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_06_12, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_06_12; target:src_ip;)
Jun 12, 2023, 12:00 PM
Jun 12, 2023, 12:00 PM
Sep 21, 2024, 3:00 AM
Aug 21, 2025, 9:36 PM
rules/emerging-malware.rules