alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Downeks Variant CnC? Beacon"; flow:established,to_server; content:"POST"; http_method; content:!"."; http_uri; content:!"?"; http_uri; content:!"="; http_uri; content:!"User-Agent|3a|"; http_header; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; content:"Content-Type|3a 20|text/plain|3b|charset=UTF-8|0d 0a|Host|3a 20|"; depth:46; http_header; fast_pattern:26,20; content:"Expect|3a 20|100-continue|0d 0a|"; distance:0; http_header; pcre:"/^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})+$/P"; reference:md5,31cf042e91de7492c86e1ad02dc9eaec; reference:url,researchcenter.paloaltonetworks.com/2017/01/unit42-downeks-and-quasar-rat-used-in-recent-targeted-attacks-against-governments/; classtype:trojan-activity; sid:2023811; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_01_31, deployment Perimeter, former_category MALWARE, malware_family DustSky?_related_Implant, 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 -> $EXTERNAL_NET any (msg:"ET TROJAN Downeks Variant CnC? Beacon"; flow:established,to_server; content:"POST"; http_method; content:!"."; http_uri; content:!"?"; http_uri; content:!"="; http_uri; content:!"User-Agent|3a|"; http_header; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; content:"Content-Type|3a 20|text/plain|3b|charset=UTF-8|0d 0a|Host|3a 20|"; depth:46; http_header; fast_pattern:26,20; content:"Expect|3a 20|100-continue|0d 0a|"; distance:0; http_header; pcre:"/^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})+$/P"; reference:md5,31cf042e91de7492c86e1ad02dc9eaec; reference:url,researchcenter.paloaltonetworks.com/2017/01/unit42-downeks-and-quasar-rat-used-in-recent-targeted-attacks-against-governments/; classtype:trojan-activity; sid:2023811; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_01_31, deployment Perimeter, former_category MALWARE, malware_family DustSky?_related_Implant, signature_severity Major, updated_at 2020_08_04;)

Added 2020-08-05 19:13:07 UTC


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Downeks Variant CnC? Beacon"; flow:established,to_server; content:"POST"; http_method; content:!"."; http_uri; content:!"?"; http_uri; content:!"="; http_uri; content:!"User-Agent|3a|"; http_header; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; content:"Content-Type|3a 20|text/plain|3b|charset=UTF-8|0d 0a|Host|3a 20|"; depth:46; http_header; fast_pattern:26,20; content:"Expect|3a 20|100-continue|0d 0a|"; distance:0; http_header; pcre:"/^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})+$/P"; metadata: former_category MALWARE; reference:md5,31cf042e91de7492c86e1ad02dc9eaec; reference:url,researchcenter.paloaltonetworks.com/2017/01/unit42-downeks-and-quasar-rat-used-in-recent-targeted-attacks-against-governments/; classtype:trojan-activity; sid:2023811; 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_01_31, malware_family DustSky?_related_Implant, updated_at 2020_08_04;)

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


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Downeks Variant CnC? Beacon"; flow:established,to_server; content:"POST"; http_method; content:!"."; http_uri; content:!"?"; http_uri; content:!"="; http_uri; content:!"User-Agent|3a|"; http_header; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; content:"Content-Type|3a 20|text/plain|3b|charset=UTF-8|0d 0a|Host|3a 20|"; depth:46; http_header; fast_pattern:26,20; content:"Expect|3a 20|100-continue|0d 0a|"; distance:0; http_header; pcre:"/^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})+$/P"; metadata: former_category MALWARE; reference:md5,31cf042e91de7492c86e1ad02dc9eaec; reference:url,researchcenter.paloaltonetworks.com/2017/01/unit42-downeks-and-quasar-rat-used-in-recent-targeted-attacks-against-governments/; classtype:trojan-activity; sid:2023811; 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_01_31, malware_family DustSky?_related_Implant, updated_at 2017_01_31;)

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


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Downeks Variant CnC? Beacon"; flow:established,to_server; content:"POST"; http_method; content:!"."; http_uri; content:!"?"; http_uri; content:!"="; http_uri; content:!"User-Agent|3a|"; http_header; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; content:"Content-Type|3a 20|text/plain|3b|charset=UTF-8|0d 0a|Host|3a 20|"; depth:46; http_header; fast_pattern:26,20; content:"Expect|3a 20|100-continue|0d 0a|"; distance:0; http_header; pcre:"/^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})+$/P"; reference:md5,31cf042e91de7492c86e1ad02dc9eaec; reference:url,researchcenter.paloaltonetworks.com/2017/01/unit42-downeks-and-quasar-rat-used-in-recent-targeted-attacks-against-governments/; classtype:trojan-activity; sid:2023811; 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_01_31, malware_family DustSky?_related_Implant, updated_at 2017_01_31;)

Added 2018-09-13 19:53:25 UTC


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


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Downeks Variant CnC? Beacon"; flow:established,to_server; content:"POST"; http_method; content:!"."; http_uri; content:!"?"; http_uri; content:!"="; http_uri; content:!"User-Agent|3a|"; http_header; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; content:"Content-Type|3a 20|text/plain|3b|charset=UTF-8|0d 0a|Host|3a 20|"; depth:46; http_header; fast_pattern:26,20; content:"Expect|3a 20|100-continue|0d 0a|"; distance:0; http_header; pcre:"/^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})+$/P"; reference:md5,31cf042e91de7492c86e1ad02dc9eaec; reference:url,researchcenter.paloaltonetworks.com/2017/01/unit42-downeks-and-quasar-rat-used-in-recent-targeted-attacks-against-governments/; classtype:trojan-activity; sid:2023811; 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_01_31, malware_family DustSky?_related_Implant, updated_at 2017_01_31;)

Added 2017-08-07 21:19:02 UTC


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Downeks Variant CnC? Beacon"; flow:established,to_server; content:"POST"; http_method; content:!"."; http_uri; content:!"?"; http_uri; content:!"="; http_uri; content:!"User-Agent|3a|"; http_header; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; content:"Content-Type|3a 20|text/plain|3b|charset=UTF-8|0d 0a|Host|3a 20|"; depth:46; http_header; fast_pattern:26,20; content:"Expect|3a 20|100-continue|0d 0a|"; distance:0; http_header; pcre:"/^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})+$/P"; reference:md5,31cf042e91de7492c86e1ad02dc9eaec; reference:url,researchcenter.paloaltonetworks.com/2017/01/unit42-downeks-and-quasar-rat-used-in-recent-targeted-attacks-against-governments/; classtype:trojan-activity; sid:2023811; rev:2;)

Added 2017-01-31 16:51:02 UTC


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