""ET TROJAN Win32/Zegost!ml CnC Checkin""

SID: 2038778

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 2022_09_08, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2022_09_08, reviewed_at 2024_08_19

Reference:

  • md5

  • 36b81518c59c0ab6c17e4e750be0c85e

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: "/dark/275.htm"

  • Value: "|3b 2b|SV1|3b|"

Within:

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

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_header

source