""ET TROJAN Maldoc Second Stage VBS Downloader with URL Padding""

SID: 2023739

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2017_01_12, deployment Perimeter, malware_family Maldoc, performance_impact Low, signature_severity Major, tag MalDoc, updated_at 2017_01_12

Reference:

  • md5

  • 57ce6f966c6b441fe82a211647c6e863

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: ".exe???????????????"

  • Value: "WinHttp.WinHttpRequest."

Within:

PCRE: "/.exe\?+$/Ui"

Special Options:

  • http_uri

  • nocase

  • http_header

source