""ET TROJAN Possible Graftor EXE Download Common Header Order""

SID: 2018254

Revision: 2

Class Type: trojan-activity

Metadata: created_at 2014_03_12, performance_impact Significant, updated_at 2023_03_10, reviewed_at 2024_02_16

Reference:

  • md5

  • 5d9d5b9089ad464e51ff391b14da1953

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: ".exe"

  • Value: " MSIE "

  • Value: "Host|3a|" Depth: 5

  • Value: "Connection|3a 20|close|0d 0a|"

  • Value: !"Referer|3a 20|"

Within:

PCRE: "/^Host\x3a[^\r\n]+\r\nAccept-Language\x3a[^\r\n]+\r\nAccept\x3a[^\r\n]+\r\nAccept-Encoding\x3a[^\r\n]+\r\nConnection\x3a\x20close\r\nUser-Agent\x3a[^\r\n]+\r\n(?:\r\n)?$/H"

Special Options:

  • http_uri

  • http_header

  • http_header

  • http_header

  • http_header

source