""ET TROJAN Win32/Grandoreiro Sending System Information (POST)""

SID: 2038618

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 2022_08_25, deployment Perimeter, malware_family Grandoreiro, signature_severity Major, updated_at 2023_02_27, reviewed_at 2024_01_26

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: ".php?MD="

  • Value: "&OUT="

  • Value: "&SO="

  • Value: "&AV="

  • Value: "&PC="

  • Value: "|28|compatible|3b 20|Clever|20|Internet|20|Suite|29 0d 0a|"

  • Value: !"Referer|3a 20|"

Within:

PCRE: "/^User-Agent\x3a\x20[^\r\n]+\x28compatible\x3b\x20Clever\x20Internet\x20Suite\x29/Hmi"

Special Options:

  • http_method

  • http_uri

  • http_uri

  • http_uri

  • http_uri

  • http_uri

  • http_header

  • http_header

source