""ET TROJAN [ANY.RUN] Konni.APT Exfiltration""

SID: 2046820

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_07_14, deployment Perimeter, signature_severity Critical, tag Konni, updated_at 2023_09_01

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: "/upload.php"

  • Value: "fn=" Depth: 3

  • Value: "&fd="

  • Value: "&r=63"

  • Value: "Content-Type|3a 20|application/x-www-form-urlencoded|0d 0a|Host"

  • Value: "|0d 0a|Expect|3a 20|100|2d|continue|0d 0a|Connection|3a 20|Keep|2d|Alive"

Within:

PCRE: "/^Content-Type\x3a\x20[^\r\n]+\r\nHost\x3a\x20[^\r\n]+\r\nContent-Length\x3a\x20[^\r\n]+\r\nExpect\x3a\x20[^\r\n]+\r\nConnection|0d 0a 0d 0a|/H"

Special Options:

  • http_method

  • http_uri

  • http_client_body

  • http_client_body

  • http_client_body

  • fast_pattern

  • http_header

  • http_header

source