""ET TROJAN MSIL/CrimsonRAT Activity (POST)""

SID: 2036290

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2022_04_21, deployment Perimeter, malware_family CrimsonRAT, signature_severity Major, updated_at 2022_04_21

Reference:

  • md5

  • 41702a1959b1b7038237d75330b904b6

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "q=" Depth: 2

  • Value: "|7c|ver="

  • Value: "|7c 7c|"

  • Value: !"Referer|3a 20|"

  • Value: !"User-Agent|3a 20|"

  • Value: !"Accept"

  • Value: "POST /indexer.php HTTP/1.1"

Within: 4

PCRE:

Special Options:

  • http_client_body

  • fast_pattern

  • http_client_body

  • http_client_body

  • http_header

  • http_client_body

  • http_client_body

source