MediumSplunk security content Michael Haag +1

Windows Application Whitelisting Bypass Attempt via Rundll32

Description

The following analytic detects the execution of rundll32.exe calling one of the following DLLs: - Advpack.dll - Ieadvpack.dll - Syssetup.dll - Setupapi.dll with one of the following functions: "LaunchINFSection", "InstallHinfSection", "SetupInfObjectInstallAction". This method is identified through Endpoint Detection and Response (EDR) telemetry, focusing on command-line executions and process details. This activity is significant as it indicates a potential application control or whitelisting bypass, allowing script code execution from a file. If confirmed malicious, an attacker could execute arbitrary code, potentially leading to privilege escalation, persistence, or further network compromise. Investigate the script content, network connections, and any spawned child processes for further context.

Detection logic

Detection requirements

Platform: Windows
The rule states no platform. This is derived from the ATT&CK technique it maps to.
Log source category: crowdstrike_processrollup2 sysmon_eventid_1 windows_event_log_security_4688

Known benign triggers

Although unlikely, some legitimate applications may leverage one of the following DLLs syssetup.dll, dvpack.dll, ieadvpack.dll and can trigger a false positive. Apply additional filters as needed.

References

Links the source published beside this detection. Reference is the link the source wrote, unmodified. Class is decided by this catalogue from the host and path, not stated by the source. Cited by counts published detections citing the same resource, including this one, and the sources beneath it count the repositories this catalogue ingests, which is not the same as independent research.
Reference	Class	Cited by
attack.mitre.org/techniques/T1218/011/	Taxonomy	9
bohops.com/2018/02/26/leveraging-inf-sct-fetch-execute-techniques-for-bypass-evasion-persistence/	Security research	4
github.com/redcanaryco/atomic-red-team/blob/388942adbd9641f4dfdcf079d7efe9a75ec0ac43/atomics/T1218.011/T1218.011.yaml#L112	Detection test	5
github.com/redcanaryco/atomic-red-team/blob/388942adbd9641f4dfdcf079d7efe9a75ec0ac43/atomics/T1218.011/T1218.011.yaml#L138	Detection test	5
github.com/redcanaryco/atomic-red-team/blob/388942adbd9641f4dfdcf079d7efe9a75ec0ac43/atomics/T1218.011/T1218.011.yaml#L59	Detection test	5
github.com/redcanaryco/atomic-red-team/blob/388942adbd9641f4dfdcf079d7efe9a75ec0ac43/atomics/T1218.011/T1218.011.yaml#L85	Detection test	5
github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1218.011/T1218.011.md	Detection test	5
lolbas-project.github.io/lolbas/Binaries/Rundll32/	Tool	7
lolbas-project.github.io/lolbas/Libraries/Advpack/	Tool	Only this detection cites it
lolbas-project.github.io/lolbas/Libraries/Ieadvpack/	Tool	Only this detection cites it
lolbas-project.github.io/lolbas/Libraries/Setupapi/	Tool	2from 2 sources
lolbas-project.github.io/lolbas/Libraries/Syssetup/	Tool	Only this detection cites it

Detection rules

Windows Application Whitelisting Bypass Attempt via Rundll32

Description

Detection logic

Detection requirements

Known benign triggers

MITRE ATT&CK mappings

References

From the source

Licence

Authorship

Detection rules