""ET TROJAN Remote Utility Access Tool Key SMTP Exfil""

SID: 2043237

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_01_06, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2023_01_06

Reference:

  • md5

  • 305d37bb6e5c51191508761cee43f0e0

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: 587

Flow: established,to_server

Contents:

  • Value: "|40|pcomail|2e|com|3e 0d 0a|Subject|3a 0d 0a 20 3d 3f|UTF|2d|8|3f|B|3f|7"

  • Value: "To|3a 20|"

  • Value: "@pcomail.com"

  • Value: "UmVtb3RlIFV0aWxpdGllc+"

Within:

PCRE:

Special Options:

  • fast_pattern

source