title: Malicious Payload Download via Office Binaries
author: Beyu Denis, oscd.community
date: 2019/10/26
description: Downloads payload from remote server
detection:
  SELECTION_1:
    EventID: 1
  SELECTION_2:
    Image:
    - '*\powerpnt.exe'
    - '*\winword.exe'
    - '*\excel.exe'
  SELECTION_3:
    CommandLine: '*http*'
  condition: (SELECTION_1 and SELECTION_2 and SELECTION_3)
falsepositives:
- Unknown
id: 0c79148b-118e-472b-bdb7-9b57b444cc19
level: high
logsource:
  category: process_creation
  product: windows
modified: 2019/11/04
references:
- https://github.com/LOLBAS-Project/LOLBAS/blob/master/yml/OtherMSBinaries/Powerpnt.yml
- https://medium.com/@reegun/unsanitized-file-validation-leads-to-malicious-payload-download-via-office-binaries-202d02db7191
- Reegun J (OCBC Bank)
status: experimental
tags:
- attack.command_and_control
- attack.t1105
ruletype: SIGMA