""ET TROJAN W32.Dreambot File Upload (No Data Sent)""

SID: 2022970

Revision: 3

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2016_07_14, deployment Perimeter, malware_family ursnif, malware_family Dreambot, malware_family ISFB, performance_impact Low, signature_severity Major, updated_at 2016_11_04

Reference:

  • md5

  • e17b1d84da1d2c684f3e67adff7ef582

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: "/images/"

  • Value: "_2"

  • Value: "User-Agent|3a 20|" Depth: 12

  • Value: "Content-Length|3a 20|2|0d 0a|"

  • Value: !"Referer|3a 20|"

  • Value: !"Accept"

Within:

PCRE: "/\/images\/._2[FB]..(?:avi|gif|bmp|jpeg|png)$/Ui"

Special Options:

  • http_method

  • http_uri

  • http_uri

  • http_header

  • http_header

  • fast_pattern

  • http_header

  • http_header

source