""ET INFO Gamaredon APT Style jpeg Request (GET)""

SID: 2045046

Revision: 1

Class Type: bad-unknown

Metadata: attack_target Client_Endpoint, created_at 2023_04_19, deployment Perimeter, performance_impact Significant, confidence Medium, signature_severity Informational, updated_at 2023_04_19

Reference:

  • md5

  • a92c520c99b0c626b43ba4b3bd754ccc

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: ".jpeg"

  • Value: !"Referer|3a 20|"

Within:

PCRE: "/^Host\x3a\x20\d{1,3}.\d{1,3}.\d{1,3}.\d{1,3}\r\n/Hm"

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_header

source