""ET TROJAN DCRat Initial CnC Activity""

SID: 2029881

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 2020_04_13, deployment Perimeter, malware_family DCRat, signature_severity Major, updated_at 2020_07_07

Reference:

  • md5

  • 4467b54917f60b657e0c92df4296cbc1

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: ".php?"

  • Value: "=c"

  • Value: "=c|20|HTTP/1.1|0d 0a|"

Within: 2

PCRE: "/Host\x3a\x20[^\r\n]+\r\nConnection\x3a\x20[^\r\n]+\r\n\r\n$/Hmi"

Special Options:

  • http_method

  • http_uri

  • http_uri

  • fast_pattern

source