""ET MALWARE Win32/DownWare.V Checkin""

SID: 2034903

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2022_01_12, deployment Perimeter, updated_at 2022_01_12, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1496, mitre_technique_name Resource_Hijacking

Reference:

  • md5

  • 68b8cd6e7905578b21dd2ad02b33648c

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: "av="

  • Value: "&mac="

  • Value: "&os="

  • Value: "&secret="

  • Value: "&sid="

Within: 4

PCRE: "/&sid=[0-9a-fA-F]{8}\b-[0-9a-fA-F]{4}\b-[0-9a-fA-F]{4}\b-[0-9a-fA-F]{4}\b-[0-9a-fA-F]{12}$/U"

Special Options:

  • http_method

  • http_uri

  • http_uri

  • http_uri

  • http_uri

  • fast_pattern

  • http_uri

source