""ET INFO Dropbox paper Document Request Observed""

SID: 2052813

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Any, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2024_05_21, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Informational, tag TA_Abused_Service, updated_at 2024_05_21

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: "/scl/fi/" Depth: 8

  • Value: ".paper|3f|rlkey|3d|"

  • Value: "Host|3a 20|www.dropbox.com|0d 0a|"

Within:

PCRE: "/.paper\x3frlkey\x3d[a-zA-Z0-9]{21}/U"

Special Options:

  • http_method

  • http_uri

  • http_uri

  • fast_pattern

  • http_header

source