""ET INFO Suspicious Zipped Filename in Outbound POST Request (Bookmarks Firefox.txt) M1""

SID: 2039111

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2022_10_06, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Stealer, updated_at 2022_10_06

Reference:

  • md5

  • 8a5761a2d8a5730e5f6edaf558781897

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: "PK" Depth: 2

  • Value: "Bookmarks|5c|Firefox.txt"

Within:

PCRE:

Special Options:

  • http_method

  • http_client_body

  • fast_pattern

  • http_client_body

  • nocase

source