Arbitrary File Download Via MSOHTMED.EXE

testmedium
log source: windows · process_creationauthor Nasreddine Bencherchali (Nextron Systems)date 2022-08-19
01

description

What this is, in brief.

Detects usage of "MSOHTMED" to download arbitrary files

02

tags

attack.executionattack.stealthattack.t1218
03

rule source (YAML)

title: Arbitrary File Download Via MSOHTMED.EXE
id: 459f2f98-397b-4a4a-9f47-6a5ec2f1c69d
status: test
description: Detects usage of "MSOHTMED" to download arbitrary files
references:
    - https://github.com/LOLBAS-Project/LOLBAS/pull/238/files
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-08-19
modified: 2023-11-09
tags:
    - attack.execution
    - attack.stealth
    - attack.t1218
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\MSOHTMED.exe'
        - OriginalFileName: 'MsoHtmEd.exe'
    selection_cli:
        CommandLine|contains:
            - 'ftp://'
            - 'http://'
            - 'https://'
    condition: all of selection_*
falsepositives:
    - Unknown
level: medium
04

detects techniques (1)

ATT&CK techniques this enables or maps to.

05

references

External citations — patches, advisories, analysis.