""ET TROJAN Suspicious Zipped Filename in Outbound POST Request (cookie.txt) M2""

SID: 2027270

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2019_04_23, deployment Perimeter, performance_impact Low, signature_severity Major, tag T1005, tag Data_from_local_system, tag Collection, updated_at 2019_04_23

Reference:

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: "Content-Disposition|3a 20|form-data|3b 20|name="

  • Value: ".zip|22 0d 0a|"

  • Value: "|0d 0a|PK"

  • Value: "cookie.txt"

Within: 50

PCRE:

Special Options:

  • http_method

  • http_client_body

  • http_client_body

  • http_client_body

  • http_client_body

  • nocase

  • fast_pattern

source