""ET TROJAN Possible DANDERSPRITZ HTTP Beacon""

SID: 2024248

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 2017_04_26, deployment Perimeter, signature_severity Major, tag c2, updated_at 2022_05_03, 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: $HTTP_PORTS

Flow: established,to_server

Contents:

• Value: "POST"

• Value: "|3a|0000"

• Value: "|f0 00 00 00 45 ff 11 ff f0 44 00 00|"

Offset: 0

Within:

PCRE:

Special Options:

• http_method

• http_header

• http_client_body

• fast_pattern

source