""ET TROJAN Win32/Fynloski.AA CnC Checkin""

SID: 2037234

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_06_30, deployment Perimeter, malware_family Win32_Fynloski_AA, performance_impact Low, signature_severity Major, updated_at 2022_06_30

Reference:

  • md5

  • 082ba31c83e3fc1114b6444111e88019

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: "/ok?hw="

  • Value: "uuid={"

  • Value: "ver="

  • Value: "name="

  • Value: "system="

  • Value: "sysdate="

  • Value: "act="

  • Value: "str1="

  • Value: "str2="

  • Value: "str3="

  • Value: !"Referer|3a 20|"

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_uri

  • http_uri

  • http_uri

  • http_uri

  • http_uri

  • http_uri

  • http_uri

  • http_uri

  • http_uri

  • http_header

source