""ET TROJAN Win32.Agent.OSCF CnC Checkin""

SID: 2039607

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2022_10_31, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, updated_at 2022_10_31

Reference:

  • md5

  • 38fdb5c2bf21500a888fa9b0d9649a19

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: any

Flow: established,to_server

Contents:

  • Value: "IP|3d|"

  • Value: "IP|3d|"

  • Value: "|3d|Microsoft|20|Windows|20|"

  • Value: "|3d|C|3a 5c|"

  • Value: "|0d 0a 0d 0a|"

Within:

PCRE:

Special Options:

  • fast_pattern

source