""ET MALWARE Reborn Stealer 2021 Exfil attempt via Telegram""

SID: 2033209

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 2021_06_30, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, signature_severity Major, updated_at 2021_06_30

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: "/sendDocument?chat_id="

  • Value: "|26|caption|3d|"

  • Value: "|f0 9f 8f b4 20|IP|3a 20|"

  • Value: "|20|BASIC|20|INFORMATION|3a 0a 20 20 20 e2 88 9f 20|Passwords|20 2d 20|"

Within:

PCRE:

Special Options:

  • http_method

  • http_uri

  • http_uri

  • http_uri

  • fast_pattern

  • http_uri

source