""ET TROJAN Win32/VB.SDB CnC Beacon""

SID: 2023544

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 2016_11_23, deployment Perimeter, signature_severity Major, tag c2, updated_at 2016_11_23, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: any

Flow: established,to_server

Contents:

  • Value: "Auth" Depth: 4

  • Value: "|20 40 20|"

  • Value: "|5c 23 2f|Microsoft|20|"

Within:

PCRE:

Special Options:

  • fast_pattern

source