Versions (3)
Version DetailsCurrent
Rev: 2 • Apr 23, 2019, 12:00 PMET ATTACK_RESPONSE Possible Remote System32 DLL Hijack Command Inbound via HTTP (T1038, T1105)
alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET ATTACK_RESPONSE Possible Remote System32 DLL Hijack Command Inbound via HTTP (T1038, T1105)"; flow:established,from_server; content:"200"; http_stat_code; file_data; content:"copy|20|"; content:".dll"; distance:0; content:"|5c|Windows|5c|System32|5c|"; distance:0; fast_pattern; content:".dll"; distance:0; content:"copy|20|"; pcre:"/^(?P<dll_name>[a-z0-9\-_]{1,20})\.dll\s*\\\\(([0-9]{1,3}\.){3}[0-9]{1,3}|([a-z0-9\-]{1,30}\.){1,8}[a-z]{1,8})\\\w{1,10}\$\\Windows\\System32\\(?P=dll_name)\.dll/Ri"; reference:url,posts.specterops.io/lateral-movement-scm-and-dll-hijacking-primer-d2f61e8ab992; classtype:attempted-user; sid:2027268; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, created_at 2019_04_23, deployment Internal, performance_impact Low, confidence Medium, signature_severity Major, tag T1038, tag T1105, updated_at 2019_07_26;)
Apr 23, 2019, 12:00 PM
Jul 26, 2019, 12:00 PM
Sep 21, 2024, 3:00 AM
May 30, 2025, 12:04 AM
rules/emerging-attack_response.rules