""ET TROJAN Win32/Backdoor.Graphon Checkin Activity (GET)""

SID: 2034224

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2021_10_18, deployment Perimeter, deployment SSLDecrypt, signature_severity Major, updated_at 2021_10_18

Reference:

  • md5

  • ff81a65150e318c1ffbeaba7a56bb09f

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: "/api/Values_V1/AuthAsyncComplete_V1?Identity=" Depth: 45

  • Value: "=%3E"

Within:

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

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_raw_uri

source