""ET TROJAN Win32/Qbot CnC Activity M2""

SID: 2035525

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_12_09, deployment Perimeter, deployment SSLDecrypt, malware_family Qbot, performance_impact Low, signature_severity Major, updated_at 2020_12_09

Reference:

  • md5

  • 3ceb36fc3607df3d67d9eb0f1d00fea0

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "POST|20|/t4|20|HTTP/1.1" Depth: 17

  • Value: "Accept|3a 20|Accept: application/x-shockwave-flash, image/gif, image/jpeg, image/pjpeg, /|0d 0a|"

  • Value: !"Referer|3a|"

Within:

PCRE: "/^[A-Za-z0-9]{3,20}=(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})$/Psi"

Special Options:

  • fast_pattern

  • http_header

  • http_header

source