""ET TROJAN REvil Exfil SFTP Certificate Inbound""

SID: 2033205

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2021_06_30, deployment Perimeter, malware_family Ransomware, performance_impact Low, signature_severity Major, updated_at 2021_06_30, reviewed_at 2024_05_06

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: any

Destination Network: $HOME_NET

Destination Port: 21

Flow: to_client,established

Contents:

  • Value: "Kanzas City"

  • Value: "System IT Inc"

  • Value: "|55 04 03|"

  • Value: "|06|server"

Within: 7

PCRE:

Special Options:

  • nocase

  • fast_pattern

source