""ET TROJAN Kimsuky Maldoc Activity""

SID: 2032275

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2021_03_22, deployment Perimeter, malware_family Kimsuky, performance_impact Low, signature_severity Major, updated_at 2021_03_22

Reference:

  • md5

  • 1670bb091dba017606ea5e763072d45f

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "HEAD"

  • Value: "/tmp?q=6"

  • Value: "|20|Office|20|"

  • Value: !"Referer|3a 20|"

  • Value: !"Accept"

Within:

PCRE: "/^User-Agent\x3a\x20[^\r\n]+\x20Office\x20/Hmi"

Special Options:

  • http_method

  • fast_pattern

  • http_uri

  • http_header

  • http_header

  • http_header

source