""ET TROJAN Ursnif Payload Request (cook64.rar)""

SID: 2031744

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 2021_03_02, deployment Perimeter, malware_family ursnif, signature_severity Major, updated_at 2021_03_02

Reference:

  • md5

  • c453d38c87a5df2fff509a4d9aba40e8

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: "/cook64.rar"

  • Value: !"Referer|3a 20|"

Within:

PCRE: "/\/cook64.rar$/U"

Special Options:

  • http_method

  • fast_pattern

  • http_uri

  • http_header

source