""ET TROJAN Sharik/Smoke CnC Beacon 8""

SID: 2025142

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_12_07, deployment Perimeter, signature_severity Major, tag Smoke_Loader, tag c2, updated_at 2017_12_07, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel

Reference:

  • md5

  • 5b0e06e3e896d541264a03abef5f30c7

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: "/ HTTP/1.1|0d 0a|Cache-Control|3a 20|no-cache|0d 0a|Connection|3a 20|Keep-Alive|0d 0a|Pragma|3a 20|no-cache|0d 0a|Content-Type|3a 20|"

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

  • Value: "|0d 0a|"

  • Value: "User-Agent|3a 20|Mozilla/5.0 (Windows NT 6.1|3b 20|WOW64|3b 20|Trident/7.0|3b 20|rv:11.0) like Gecko|0d 0a|"

Within: 2

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

Special Options:

  • http_method

  • http_header

  • http_header

  • http_header

source