""ET TROJAN Sharik/Smoke CnC Beacon 11""

SID: 2025993

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 2018_08_15, deployment Perimeter, malware_family Sharik, malware_family Smoke_Loader, malware_family SmokeLoader, signature_severity Major, tag c2, updated_at 2018_08_15, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel

Reference:

  • md5

  • d110be58537aa8420a9c25f4879ca77b

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: "/"

  • Value: "|0d 0a|Content-Length|3a 20|63|0d 0a|"

  • Value: "application/x-www-form-urlencoded"

  • Value: "keep-alive"

  • Value: "Referer"

Within:

PCRE: "/^[\x20-\x7e\r\n]{0,20}[^\x20-\x7e\r\n]/P"

Special Options:

  • http_method

  • http_uri

  • http_header

  • fast_pattern

  • http_header

  • nocase

  • http_header

  • http_header

source