""ET TROJAN Possible Dragonfly APT Activity - SMB credential harvesting""

SID: 2024898

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2017_10_23, deployment Perimeter, signature_severity Major, updated_at 2017_10_23

Reference:

Protocol: tcp

Source Network: any

Source Port: any

Destination Network: any

Destination Port: 445

Flow: established,to_server

Contents:

  • Value: "|FF|SMB|75 00 00 00 00|" Depth: 9 Offset: 4

  • Value: "|08 00 01 00|"

  • Value: "|00 5c 5c|"

  • Value: "|5c|AME_ICON.PNG"

Within: 3

PCRE:

Special Options:

  • fast_pattern

source