""ET TROJAN Win32/DCRat CnC Exfil""

SID: 2033087

Revision: 3

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_06_04, deployment Perimeter, malware_family DCRat, signature_severity Major, updated_at 2021_07_09

Reference:

  • md5

  • 3aa17643535d17db367447e1104e12d9

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: ".php?"

  • Value: "|0d 0a|Content-Type|3a 20|"

  • Value: "|0d 0a 0d 0a|PK"

  • Value: "Browsers/"

  • Value: !"Accept-"

  • Value: !"Referer"

Within: 6

PCRE: "/\r\nContent-Type\x3a\x20[a-f0-9]{32}\r\n\r\nPK/Psi"

Special Options:

  • http_method

  • http_uri

  • http_client_body

  • http_client_body

  • http_client_body

  • fast_pattern

  • http_header

  • http_header

source