""ET TROJAN Win32/WhiskerSpy - FTP STOR Command M1""

SID: 2044255

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2023_02_20, deployment Perimeter, malware_family WhiskerSpy, performance_impact Moderate, confidence Medium, signature_severity Major, updated_at 2023_02_20

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: [21,53]

Flow: established,to_server

Contents:

  • Value: "STOR l"

Within:

PCRE: "/^[a-f0-9]{16}\x0d\x0a/R"

Special Options:

source