""ET CURRENT_EVENTS Suspicious Proxifier DL (non-browser observed in maldoc campaigns)""

SID: 2023138

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 2016_08_26, deployment Perimeter, performance_impact Low, signature_severity Major, tag MalDoc, updated_at 2016_08_26

Reference:

  • md5

  • 2a0728a6edab6921520a93e10a86d4b2

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "/distr/Proxifier" Depth: 16

  • Value: !"User-Agent|3a|"

  • Value: !"Referer|3a|"

  • Value: !"Accept-"

  • Value: !"Cookie|3a|"

  • Value: "proxifier.com|0d 0a|"

Within:

PCRE:

Special Options:

  • http_uri

  • nocase

  • fast_pattern

  • http_header

  • nocase

  • http_header

  • http_header

  • http_header

  • nocase

source