""ET TROJAN Higaisa CnC Activity""

SID: 2029640

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_03_17, deployment Perimeter, malware_family Higasa, signature_severity Major, updated_at 2020_03_17

Reference:

  • md5

  • 23a30f6afa17f971148d9e955f65ae98

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "GET"

  • Value: ".php"

  • Value: "User-Agent|3a 20|Mozilla/5.0 (Windows NT 6.1|3b 20|WOW64|3b 20|rv|3a|13.0) Gecko/2010010"

  • Value: "|0d 0a|Host|3a 20|"

  • Value: !"Referer|3a|"

  • Value: !"Accept"

Within: 8

PCRE: "/\r\nUser-Agent\x3a\x20Mozilla\/5.0 (Windows NT 6.1\x3b\x20WOW64\x3b\x20rv\x3a13.0) Gecko\/2010010[A-F0-9]{8}\r\nHost\x3a\x20[^\r\n]+\r\n\r\n$/Hmi"

Special Options:

  • http_method

  • http_uri

  • http_header

  • http_header

  • http_header

  • http_header

source