""ET TROJAN Remcos Builder License Check""

SID: 2032783

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_04_19, deployment Perimeter, malware_family Remcos, performance_impact Low, signature_severity Major, updated_at 2021_04_19

Reference:

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: "logaccess.php?DATA="

  • Value: "User-Agent|3a 20|Remcos|0d 0a|"

Within:

PCRE: "/logaccess.php\?DATA=[0-9A-F]+$/U"

Special Options:

  • http_method

  • fast_pattern

  • http_uri

  • http_header

source