""ET TROJAN Donot Group Downloader Activity (GET)""

SID: 2044208

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2023_02_15, deployment Perimeter, deployment SSLDecrypt, malware_family DonotGroup, confidence High, signature_severity Major, updated_at 2023_02_15

Reference:

  • md5

  • 8f2829a963c3b6f247ac77e0bf992bf1

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "GET"

  • Value: "|5c 5c 15 54 12 0d 0a|"

Within:

PCRE: "/^Accept\x3a\x20[^\r\n]+\r\nUser-Agent\x3a\x20[^\r\n]+\r\nHost\x3a\x20[^\r\n]+[\r\n]+$/H"

Special Options:

  • http_method

  • http_header

  • fast_pattern

source