""ET TROJAN Win32/Backdoor.Agent.qweydh CnC Checkin M2""

SID: 2025171

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 2017_12_22, deployment Perimeter, former_category MALWARE, performance_impact Moderate, signature_severity Major, updated_at 2022_05_03

Reference:

  • md5

  • 5dcc10711305c0bd4c8290eaae660ef3

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: "/update.php"

  • Value: "data=" Depth: 5

  • Value: !"Accept"

  • Value: !"User-Agent|3a|"

  • Value: !"Referer|3a|"

Within:

PCRE: "/^data=(?:[A-Za-z0-9%2b%2f]{4})*(?:[A-Za-z0-9%2b%2f]{2}%3d%3d|[A-Za-z0-9%2b%2f]{3}%3d|[A-Za-z0-9%2b%2f]{4})$/Psi"

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_client_body

  • http_header

  • http_header

source