""ET TROJAN Kimsuky Related Activity (POST)""

SID: 2033199

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2021_06_28, deployment Perimeter, malware_family Kimsuky, performance_impact Low, signature_severity Major, updated_at 2021_06_28

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: "/?m="

Offset: 4

  • Value: "&p1="

  • Value: "&p2="

  • Value: "|0d 0a|Content-Length|3a 20|0|0d 0a|"

Within:

PCRE: "/^User-Agent\x3a\x20[^\r\n]+\r\nHost\x3a\x20[^\r\n]+\r\nContent-Length\x3a\x20[^\r\n]+\r\nCache-Control\x3a\x20[^\r\n]+\r\n\r\n$/H"

Special Options:

  • http_method

  • fast_pattern

  • http_uri

  • http_uri

  • http_uri

  • http_header

source