""ET TROJAN ReverseRAT Activity (POST) M1""

SID: 2033174

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2021_06_24, deployment Perimeter, malware_family ReverseRAT, performance_impact Low, signature_severity Major, updated_at 2021_06_24

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "POST"

  • Value: "|43 21 f0 39 ff 82 2c 1c 54 06|" Depth: 10

  • Value: !"User-Agent|3a 20|"

  • Value: !"Referer|3a 20|"

  • Value: !"Accept"

Within:

PCRE: "/\x3a\x20[^\r\n]+\r\nExpect\x3a\x20[^\r\n]+\r\nConnection\x3a\x20[^\r\n]+[\r\n]+$/H"

Special Options:

  • http_method

  • fast_pattern

  • http_client_body

  • http_header

  • http_header

  • http_header

source