IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Potential DLL SideLoading via Trusted Microsoft Programs
editPotential DLL SideLoading via Trusted Microsoft Programs
editIdentifies an instance of a Windows trusted program that is known to be vulnerable to DLL Search Order Hijacking starting after being renamed or from a non-standard path. This is uncommon behavior and may indicate an attempt to evade defenses via side loading a malicious DLL within the memory space of one of those processes.
Rule type: query
Rule indices:
- winlogbeat-*
- logs-endpoint.events.*
Severity: high
Risk score: 73
Runs every: 5 minutes
Searches indices from: now-9m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
Tags:
- Elastic
- Host
- Windows
- Threat Detection
- Defense Evasion
Version: 1
Added (Elastic Stack release): 7.10.0
Rule authors: Elastic
Rule license: Elastic License
Rule query
editevent.category:process and event.type:(start or process_started) and
(process.pe.original_file_name:(WinWord.exe or EXPLORER.EXE or
w3wp.exe or DISM.EXE) or
winlog.event_data.OriginalFileName:(WinWord.exe or EXPLORER.EXE or
w3wp.exe or DISM.EXE)) and not (process.name:(winword.exe or
WINWORD.EXE or explorer.exe or w3wp.exe or Dism.exe) or
process.executable:("C:\Windows\explorer.exe" or
C\:\\Program?Files\\Microsoft?Office\\root\\Office*\\WINWORD.EXE or C\
:\\Program?Files?\(x86\)\\Microsoft?Office\\root\\Office*\\WINWORD.EXE
or "C:\Windows\System32\Dism.exe" or "C:\Windows\SysWOW64\Dism.exe" or
"C:\Windows\System32\inetsrv\w3wp.exe"))
Threat mapping
editFramework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Masquerading
- ID: T1036
- Reference URL: https://attack.mitre.org/techniques/T1036/