""ET MALWARE Win32/44Caliber Stealer Variant Activity (POST)""

SID: 2033833

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2021_08_30, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, signature_severity Major, updated_at 2021_08_30, reviewed_at 2023_11_07

Reference:

  • md5

  • 32595ac79386e97e05f876c5dd2ab874

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: "44CALIBER|20|MODIFIED|20|BY"

  • Value: "Build|3a 20|"

  • Value: "PC|3a 20|"

Within:

PCRE:

Special Options:

  • http_method

  • nocase

  • fast_pattern

  • http_client_body

  • http_client_body

  • http_client_body

source