""ET TROJAN Win32/Emotet CnC Activity M12 (POST)""

SID: 2043308

Revision: 6

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2023_01_17, deployment Perimeter, deployment SSLDecrypt, malware_family Emotet, performance_impact Significant, confidence Medium, signature_severity Major, updated_at 2023_03_16, reviewed_at 2023_11_14

Reference:

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: !"."

  • Value: !"&"

  • Value: !"-"

  • Value: !"?"

  • Value: "=" Depth: 17

  • Value: !"rtype=" Depth: 6

  • Value: "&"

  • Value: "Content-Type|3a 20|application/x-www-form-urlencoded|0d 0a|"

  • Value: "Content-Length|3a 20|"

Within: 300

PCRE: "/^Connection\x3a\x20[^\r\n]+\r\nContent-Type\x3a\x20[^\r\n]+\r\nContent-Length\x3a\x20[^\r\n]+\r\nHost\x3a\x20[^\r\n]+\r\n\r\n$/H"

Special Options:

  • http_method

  • http_uri

  • http_uri

  • http_uri

  • http_uri

  • http_client_body

  • http_client_body

  • http_header

source