Nasreddine Bencherchali
64 lines
2.7 KiB
YAML
64 lines
2.7 KiB
YAML
title: Antivirus Software DLL Sideloading
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id: 552b6b65-df37-4d3e-a258-f2fc4771ae54
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status: experimental
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description: Detects DLL sideloading of DLLs that are part of antivirus software suchas McAfee, Symantec...etc
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references:
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- https://hijacklibs.net/ # For list of DLLs that could be sideloaded (search for dlls mentioned here in there)
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author: Nasreddine Bencherchali, Wietze Beukema (project and research)
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date: 2022/08/17
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modified: 2022/10/25
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tags:
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- attack.defense_evasion
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- attack.persistence
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- attack.privilege_escalation
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- attack.t1574.001
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- attack.t1574.002
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logsource:
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category: image_load
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product: windows
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detection:
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# Bitdefender
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selection_bitdefender:
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ImageLoaded|endswith: '\log.dll'
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filter_log_dll_bitdefender:
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ImageLoaded|startswith:
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- 'C:\Program Files\Bitdefender Antivirus Free\'
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- 'C:\Program Files (x86)\Bitdefender Antivirus Free\'
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filter_log_dll_dell_sar:
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Image: 'C:\Program Files\Dell\SARemediation\audit\TelemetryUtility.exe'
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ImageLoaded:
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- 'C:\Program Files\Dell\SARemediation\plugin\log.dll'
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- 'C:\Program Files\Dell\SARemediation\audit\log.dll'
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filter_log_dll_canon:
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ImageLoaded|startswith: 'C:\Program Files\Canon\MyPrinter\'
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# F-Secure
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selection_fsecure:
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ImageLoaded|endswith: '\qrt.dll'
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filter_fsecure:
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ImageLoaded|startswith:
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- 'C:\Program Files\F-Secure\Anti-Virus\'
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- 'C:\Program Files (x86)\F-Secure\Anti-Virus\'
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# McAfee
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selection_mcafee:
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ImageLoaded|endswith:
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- '\ashldres.dll'
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- '\lockdown.dll'
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- '\vsodscpl.dll'
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filter_mcafee:
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ImageLoaded|startswith:
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- 'C:\Program Files\McAfee\'
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- 'C:\Program Files (x86)\McAfee\'
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# CyberArk
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selection_cyberark:
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ImageLoaded|endswith: '\vftrace.dll'
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filter_cyberark:
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ImageLoaded|startswith:
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- 'C:\Program Files\CyberArk\Endpoint Privilege Manager\Agent\x32\'
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- 'C:\Program Files (x86)\CyberArk\Endpoint Privilege Manager\Agent\x32\'
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condition: (selection_bitdefender and not 1 of filter_log_dll_*) or (selection_fsecure and not filter_fsecure) or (selection_mcafee and not filter_mcafee) or (selection_cyberark and not filter_cyberark)
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falsepositives:
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- Applications that load the same dlls mentioned in the detection section. Investigate them and filter them out if a lot FPs are caused.
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- Dell SARemediation plugin folder (C:\Program Files\Dell\SARemediation\plugin\log.dll) is known to contain the 'log.dll' file.
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- The Canon MyPrinter folder 'C:\Program Files\Canon\MyPrinter\' is known to contain the 'log.dll' file
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level: medium
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