""ET TROJAN Possible APT40/Dadstache Stage 2 Payload Beacon""

SID: 2029420

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_02_11, deployment Perimeter, signature_severity Major, tag c2, updated_at 2020_02_11, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel

Reference:

  • md5

  • 9cf5fb135c3cc29e79b2a1c78233934b

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: to_server,established

Contents:

  • Value: "POST"

  • Value: "Content-Disposition|3a 20|form-data|3b 20|name=|22|file|22 3b 20|filename=|22|"

  • Value: ".png|22 0d 0a|Content-Type|3a 20|video/JPEG|0d 0a 0d 0a 89 50 4e 47|"

Within:

PCRE:

Special Options:

  • http_method

  • http_client_body

  • http_client_body

source