alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Ursnif Variant CnC? Beacon"; flow:established,to_server; urilen:>125; content:"GET"; http_method; content:"/assets/"; http_uri; fast_pattern; content:"."; distance:100; http_uri; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; pcre:"/\/assets(?:\/[a-zA-Z0-9_]+)+\.(?:jpeg|gif)$/U"; pcre:"/^User-Agent\x3a\x20(?:Mozilla\/|Shockwave)/Hmi"; reference:md5,4dbff312f5ee5bfbd757030109faec2d; classtype:trojan-activity; sid:2023870; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_02_06, deployment Perimeter, former_category MALWARE, malware_family ursnif, signature_severity Major, tag c2, updated_at 2020_08_04, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)

Added 2021-06-18 18:19:33 UTC


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Ursnif Variant CnC? Beacon"; flow:established,to_server; urilen:>125; content:"GET"; http_method; content:"/assets/"; http_uri; fast_pattern; content:"."; distance:100; http_uri; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; pcre:"/\/assets(?:\/[a-zA-Z0-9_]+)+\.(?:jpeg|gif)$/U"; pcre:"/^User-Agent\x3a\x20(?:Mozilla\/|Shockwave)/Hmi"; reference:md5,4dbff312f5ee5bfbd757030109faec2d; classtype:trojan-activity; sid:2023870; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_02_06, deployment Perimeter, former_category MALWARE, malware_family ursnif, signature_severity Major, updated_at 2020_08_04;)

Added 2020-08-05 19:13:10 UTC


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Ursnif Variant CnC? Beacon"; flow:established,to_server; urilen:>125; content:"GET"; http_method; content:"/assets/"; http_uri; fast_pattern; content:"."; distance:100; http_uri; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; pcre:"/\/assets(?:\/[a-zA-Z0-9_]+)+\.(?:jpeg|gif)$/U"; pcre:"/^User-Agent\x3a\x20(?:Mozilla\/|Shockwave)/Hmi"; metadata: former_category MALWARE; reference:md5,4dbff312f5ee5bfbd757030109faec2d; classtype:trojan-activity; sid:2023870; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, deployment Perimeter, signature_severity Major, created_at 2017_02_06, malware_family ursnif, updated_at 2020_08_04;)

Added 2020-08-04 18:33:20 UTC


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Ursnif Variant CnC? Beacon"; flow:established,to_server; urilen:>125; content:"GET"; http_method; content:"/assets/"; http_uri; fast_pattern; content:"."; distance:100; http_uri; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; pcre:"/\/assets(?:\/[a-zA-Z0-9_]+)+\.(?:jpeg|gif)$/U"; pcre:"/^User-Agent\x3a\x20(?:Mozilla\/|Shockwave)/Hmi"; metadata: former_category MALWARE; reference:md5,4dbff312f5ee5bfbd757030109faec2d; classtype:trojan-activity; sid:2023870; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, deployment Perimeter, signature_severity Major, created_at 2017_02_06, malware_family ursnif, updated_at 2017_02_06;)

Added 2019-09-19 19:26:45 UTC


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Ursnif Variant CnC? Beacon"; flow:established,to_server; urilen:>125; content:"GET"; http_method; content:"/assets/"; http_uri; fast_pattern; content:"."; distance:100; http_uri; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; pcre:"/\/assets(?:\/[a-zA-Z0-9_]+)+\.(?:jpeg|gif)$/U"; pcre:"/^User-Agent\x3a\x20(?:Mozilla\/|Shockwave)/Hmi"; reference:md5,4dbff312f5ee5bfbd757030109faec2d; classtype:trojan-activity; sid:2023870; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, deployment Perimeter, signature_severity Major, created_at 2017_02_06, malware_family ursnif, updated_at 2017_02_06;)

Added 2018-09-13 19:53:26 UTC


Added 2018-09-13 18:01:23 UTC


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Ursnif Variant CnC? Beacon"; flow:established,to_server; urilen:>125; content:"GET"; http_method; content:"/assets/"; http_uri; fast_pattern; content:"."; distance:100; http_uri; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; pcre:"/\/assets(?:\/[a-zA-Z0-9_]+)+\.(?:jpeg|gif)$/U"; pcre:"/^User-Agent\x3a\x20(?:Mozilla\/|Shockwave)/Hmi"; reference:md5,4dbff312f5ee5bfbd757030109faec2d; classtype:trojan-activity; sid:2023870; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, deployment Perimeter, signature_severity Major, created_at 2017_02_06, malware_family ursnif, updated_at 2017_02_06;)

Added 2017-08-07 21:19:06 UTC


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Ursnif Variant CnC? Beacon"; flow:established,to_server; urilen:>125; content:"GET"; http_method; content:"/assets/"; http_uri; fast_pattern; content:"."; distance:100; http_uri; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; pcre:"/\/assets(?:\/[a-zA-Z0-9_]+)+\.(?:jpeg|gif)$/U"; pcre:"/^User-Agent\x3a\x20(?:Mozilla\/|Shockwave)/Hmi"; reference:md5,4dbff312f5ee5bfbd757030109faec2d; classtype:trojan-activity; sid:2023870; rev:2;)

Added 2017-02-06 17:17:22 UTC


Topic revision: r1 - 2021-06-18 - TWikiGuest
 
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