Potential Windows Defender AV Bypass Via Dump64.EXE Rename

Title: Potential Windows Defender AV Bypass Via Dump64.EXE Rename
Status: test
Description:Detects when a user is potentially trying to bypass the Windows Defender AV by renaming a tool to dump64.exe and placing it in the Visual Studio folder. Currently the rule is covering only usage of procdump but other utilities can be added in order to increase coverage.
References:
  -https://twitter.com/mrd0x/status/1460597833917251595
Author: Austin Songer @austinsonger, Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)
Date: 2021-11-26
modified:2024-06-21
Tags:

• -'attack.credential-access'
• -'attack.t1003.001'

Logsource:

• product: windows
• category: process_creation

Detection:
  selection_dump:
    Image|startswith: ':\Program Files'
    Image|contains: '\Microsoft Visual Studio\'
    Image|endswith: '\dump64.exe'
  selection_tools_procdump:
OriginalFileName:'procdump'     - CommandLine|contains:
      - ' -ma '
      - ' -mp '
  condition:selection_dump and 1 of selection_tools_*
Falsepositives:
  -Unknown
Level: high