""ET TROJAN abubasbanditbot CnC Checkin""

SID: 2047015

Revision: 1

Class Type: trojan-activity

Metadata: created_at 2023_08_01, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, updated_at 2023_08_01

Reference:

  • md5

  • 9bd1cc9b027a4420d6e4f780c50af93c

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: "/bot" Depth: 4

  • Value: "/sendMessage"

  • Value: "host|3a 20|api.telegram.org"

  • Value: "chat_id" Depth: 7

  • Value: "&text|3d 25 44 30 25 39 34 25 44 30 25 42 42 25 44 31 25 38 46 2b 25 44 30 25 42 32 25 44 30 25 42 30 25 44 31 25 38 31 2b 25 44 31 25 38 32 25 44 31 25 38 30 25 44 31 25 38 33 25 44 30 25 42 34 25 44 30 25 42 38 25 44 31 25 38 32 25 44 31 25 38 31 25 44 31 25 38 46 2b 25 44 30 25 39 46 25 44 30 25 39 41 25 33 41 2b 25 32 33|"

  • Value: !"Referer|3a 20|"

  • Value: !"User-Agent|3a 20|"

Within:

PCRE: "/content-type\x3a\x20[^\r\n]+\r\naccept\x3a\x20[^\r\n]+\r\nhost\x3a\x20[^\r\n]+\r\ncontent-length[^\r\n]+\r\n\r\n/Hm"

Special Options:

  • http_method

  • http_uri

  • http_uri

  • http_header

  • http_client_body

  • http_client_body

  • fast_pattern

  • http_header

  • nocase

  • http_header

  • nocase

source