""ET TROJAN W32/Quasar 1.3/Venom RAT Connectivity Check 3""

SID: 2033649

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_08_03, deployment Perimeter, malware_family Quasar, performance_impact Low, signature_severity Major, updated_at 2021_08_03

Reference:

  • md5

  • aabf88d786c8a58cccae674621277a54

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: "/xml/"

  • Value: "User-Agent|3a 20|Mozilla/5.0 (Windows NT 6.3|3b 20|rv|3a|48.0) Gecko/20100101 Firefox/48.0|0d 0a|"

  • Value: "Host|3a 20|freegeoip.net|0d 0a|"

  • Value: !"Referer|3a 20|"

Within:

PCRE:

Special Options:

  • http_method

  • http_uri

  • http_header

  • fast_pattern

  • http_header

  • http_header

source