""ET TROJAN Win32/TrickBot Anchor Variant Style External IP Check""

SID: 2032216

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_11_16, deployment Perimeter, malware_family AnchorTrickBot, signature_severity Major, updated_at 2020_11_16

Reference:

  • md5

  • 730b66cd89c8b4751dbe2c5158701a0b

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: "User-Agent|3a 20|WinHTTP loader/"

  • Value: "Host|3a 20|checkip.amazonaws.com|0d 0a|"

  • Value: !"Referer"

Within:

PCRE:

Special Options:

  • http_method

  • http_header

  • http_header

  • http_header

source