""ET TROJAN Win32/Goofy Guineapig CnC Activity (GET) M2""

SID: 2042946

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_12_15, deployment Perimeter, deployment SSLDecrypt, signature_severity Major, updated_at 2022_12_15

Reference:

  • md5

  • a21dec89611368313e138480b3c94835

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: !"Authorization|3a 20|Basic"

  • Value: !"Authorization|3a 20|Digest"

  • Value: "User-Agent|3a 20|Mozilla|2f|5|2e|0|20 28|Windows|20|NT|20|6|2e|1|3b 20|WOW64|29 20|AppleWebKit|2f|537|2e|36|20 28|KHTML|2c 20|like|20|Gecko|29 20|Chrome|2f|54|2e|0|2e|2840|2e|71|20|Safari|2f|537|2e|36"

  • Value: "GET / HTTP/1.1" Depth: 15

Within:

PCRE: "/Authorization\x3a\x20[a-zA-Z0-9\x2f+=]{90,120}/H"

Special Options:

  • http_header

  • http_header

  • http_header

source