#alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Ursnif Variant CnC? Beacon 2"; flow:established,to_server; content:"GET"; http_method; content:"/upx/"; http_uri; fast_pattern; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; content:"User-Agent|3a 20|Mozilla/"; depth:20; http_header; pcre:"/\/(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/\x20]{2}==|[A-Za-z0-9+/\x20]{3}=|[A-Za-z0-9+/\x20]{4})$/U"; reference:md5,f48f626cf746a2c3c73182c752c481b6; reference:md5,8ab21ac9199d3ced2230924b90f49f0d; classtype:trojan-activity; sid:2021812; rev:3; metadata:attack_target Client_Endpoint, created_at 2015_09_22, deployment Perimeter, former_category MALWARE, signature_severity Major, tag c2, updated_at 2020_10_05, 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 18:19:29 UTC


#alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Ursnif Variant CnC? Beacon 2"; flow:established,to_server; content:"GET"; http_method; content:"/upx/"; http_uri; fast_pattern; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; content:"User-Agent|3a 20|Mozilla/"; depth:20; http_header; pcre:"/\/(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/\x20]{2}==|[A-Za-z0-9+/\x20]{3}=|[A-Za-z0-9+/\x20]{4})$/U"; reference:md5,f48f626cf746a2c3c73182c752c481b6; reference:md5,8ab21ac9199d3ced2230924b90f49f0d; classtype:trojan-activity; sid:2021812; rev:3; metadata:created_at 2015_09_22, former_category MALWARE, updated_at 2020_10_05;)

Added 2020-10-05 18:59:41 UTC


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Ursnif Variant CnC? Beacon 2"; flow:established,to_server; content:"GET"; http_method; content:"/upx/"; http_uri; fast_pattern; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; content:"User-Agent|3a 20|Mozilla/"; depth:20; http_header; pcre:"/\/(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/\x20]{2}==|[A-Za-z0-9+/\x20]{3}=|[A-Za-z0-9+/\x20]{4})$/U"; reference:md5,f48f626cf746a2c3c73182c752c481b6; reference:md5,8ab21ac9199d3ced2230924b90f49f0d; classtype:trojan-activity; sid:2021812; rev:3; metadata:created_at 2015_09_22, former_category MALWARE, updated_at 2019_10_07;)

Added 2020-08-05 19:11:40 UTC


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Ursnif Variant CnC? Beacon 2"; flow:established,to_server; content:"GET"; http_method; content:"/upx/"; http_uri; fast_pattern; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; content:"User-Agent|3a 20|Mozilla/"; depth:20; http_header; pcre:"/\/(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/\x20]{2}==|[A-Za-z0-9+/\x20]{3}=|[A-Za-z0-9+/\x20]{4})$/U"; metadata: former_category MALWARE; reference:md5,f48f626cf746a2c3c73182c752c481b6; reference:md5,8ab21ac9199d3ced2230924b90f49f0d; classtype:trojan-activity; sid:2021812; rev:3; metadata:created_at 2015_09_22, updated_at 2019_10_07;)

Added 2019-10-08 19:34:32 UTC


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Ursnif Variant CnC? Beacon 2"; flow:established,to_server; content:"GET"; http_method; content:"/upx/"; http_uri; fast_pattern:only; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; content:"User-Agent|3a 20|Mozilla/"; depth:20; http_header; pcre:"/\/(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/\x20]{2}==|[A-Za-z0-9+/\x20]{3}=|[A-Za-z0-9+/\x20]{4})$/U"; metadata: former_category MALWARE; reference:md5,f48f626cf746a2c3c73182c752c481b6; reference:md5,8ab21ac9199d3ced2230924b90f49f0d; classtype:trojan-activity; sid:2021812; rev:2; metadata:created_at 2015_09_22, updated_at 2015_09_22;)

Added 2019-09-19 19:26:28 UTC


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Ursnif Variant CnC? Beacon 2"; flow:established,to_server; content:"GET"; http_method; content:"/upx/"; http_uri; fast_pattern:only; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; content:"User-Agent|3a 20|Mozilla/"; depth:20; http_header; pcre:"/\/(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/\x20]{2}==|[A-Za-z0-9+/\x20]{3}=|[A-Za-z0-9+/\x20]{4})$/U"; reference:md5,f48f626cf746a2c3c73182c752c481b6; reference:md5,8ab21ac9199d3ced2230924b90f49f0d; classtype:trojan-activity; sid:2021812; rev:2; metadata:created_at 2015_09_22, updated_at 2015_09_22;)

Added 2018-09-13 19:51:43 UTC


Added 2018-09-13 18:00:24 UTC


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Ursnif Variant CnC? Beacon 2"; flow:established,to_server; content:"GET"; http_method; content:"/upx/"; http_uri; fast_pattern:only; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; content:"User-Agent|3a 20|Mozilla/"; depth:20; http_header; pcre:"/\/(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/\x20]{2}==|[A-Za-z0-9+/\x20]{3}=|[A-Za-z0-9+/\x20]{4})$/U"; reference:md5,f48f626cf746a2c3c73182c752c481b6; reference:md5,8ab21ac9199d3ced2230924b90f49f0d; classtype:trojan-activity; sid:2021812; rev:2; metadata:created_at 2015_09_22, updated_at 2015_09_22;)

Added 2017-08-07 21:16:34 UTC


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Ursnif Variant CnC? Beacon 2"; flow:established,to_server; content:"GET"; http_method; content:"/upx/"; http_uri; fast_pattern:only; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; content:"User-Agent|3a 20|Mozilla/"; depth:20; http_header; pcre:"/\/(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/\x20]{2}==|[A-Za-z0-9+/\x20]{3}=|[A-Za-z0-9+/\x20]{4})$/U"; reference:md5,f48f626cf746a2c3c73182c752c481b6; reference:md5,8ab21ac9199d3ced2230924b90f49f0d; classtype:trojan-activity; sid:2021812; rev:2;)

Added 2015-09-23 18:25:19 UTC


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Win32/PSW.Papras Variant CnC? Beacon 2"; flow:established,to_server; content:"GET"; http_method; content:"/upx/"; http_uri; fast_pattern:only; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; content:"User-Agent|3a 20|Mozilla/"; depth:20; http_header; pcre:"/\/(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/\x20]{2}==|[A-Za-z0-9+/\x20]{3}=|[A-Za-z0-9+/\x20]{4})$/U"; reference:md5,f48f626cf746a2c3c73182c752c481b6; reference:md5,8ab21ac9199d3ced2230924b90f49f0d; classtype:trojan-activity; sid:2021812; rev:2;)

Added 2015-09-22 17:50:33 UTC


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