Query: detect Detects suspicious execution of rundll32, with specific calls to some DLLs with known LOLBIN functionalities in logs
Matching passage: Sigma rule: Detects suspicious execution of rundll32, with specific calls to some DLLs with known LOLBIN functionalities. Logsource: windows / process_creation. Rule: title: Potentially Suspicious Rundll32 Activity id: e593cf51-88db-4ee1-b920-37e89012a3c9 status: test description: Detects suspicious execution of rundll32, with specific calls to some DLLs with known LOLBIN functionalities references: - http://www.hexacorn.com/blog/2017/05/01/running-programs-via-proxy-jumping-on-a-edr-bypass-trampoline/ - https://twitter.com/Hexacorn/status/885258886428725250 - https://gist.github.com/ryhanson/227229866af52e2d963cf941af135a52 - https://twitter.com/nas_bench/status/1433344116071583746 - https://twitter.com/eral4m/status/1479106975967240209 - https://twitter.com/eral4m/status/1479080793003671557 author: juju4, Jonhnathan Ribeiro, oscd.community, Nasreddine Bencherchali (Nextron Systems) date: 2019-01-16 modified: 2023-05-17 tags: - attack.stealth - attack.t1218.011 logsource: category: process_creation product: windows detection: selection: - CommandLine|contains|all: - 'javascript:' - .RegisterXLL - CommandLine|contains|all: - url.dll - OpenURL - CommandLine|contains|all: - url.dll - OpenURLA - CommandLine|contains|all: - url.dll - FileProtocolHandler - CommandLine|contains|all: - zipfldr.dll - RouteTheCall - CommandLine|contains|all: - shell32.dll - Control_RunDLL - CommandLine|contains|all: - shell32.dll - ShellExec_RunDLL - CommandLine|contains|all: - mshtml.dll - PrintHTML - CommandLine|contains|all: - advpack.dll - LaunchINFSection - CommandLine|contains|all: - advpack.dll - RegisterOCX - CommandLine|contains|all: - ieadvpack.dll - LaunchINFSection - CommandLine|contains|all: - ieadvpack.dll - RegisterOCX - CommandLine|contains|all: - ieframe.dll - OpenURL - CommandLine|contains|all: - shdocvw.dll - OpenURL - CommandLine|contains|all: - syssetup.dll - SetupInfObjectInstallAction - CommandLine|contains|all: - setupapi.dll - InstallHinfSection - CommandLine|contains|all: - pcwutl.dll - LaunchApplication - CommandLine|contains|all: - dfshim.dll - ShOpenVerbApplication - CommandLine|contains|all: - dfshim.dll - ShOpenVerbShortcut - CommandLine|contains|all: - scrobj.dll - GenerateTypeLib - http - CommandLine|contains|all: - shimgvw.dll - ImageView_Fullscreen - http - CommandLine|contains|all: - comsvcs.dll - MiniDump filter_main_screensaver: CommandLine|contains: shell32.dll,Control_RunDLL desk.cpl,screensaver,@screensaver filter_main_parent_cpl: ParentImage: C:\Windows\System32\control.exe ParentCommandLine|contains: .cpl CommandLine|contains|all: - Shell32.dll - Control_RunDLL - .cpl filter_main_startmenu: ParentImage:
Near-miss passage: Sigma rule: Detects execition of commands and binaries from the context of The program compatibility assistant (Pcalua.exe). This ca. Logsource: windows / process_creation. Rule: title: Use of Pcalua For Execution id: 0955e4e1-c281-4fb9-9ee1-5ee7b4b754d2 related: - id: fa47597e-90e9-41cd-ab72-c3b74cfb0d02 type: obsolete status: test description: Detects execition of commands and binaries from the context of The program compatibility assistant (Pcalua.exe). This can be used as a LOLBIN in order to bypass application whitelisting. references: - https://lolbas-project.github.io/lolbas/Binaries/Pcalua/ - https://pentestlab.blog/2020/07/06/indirect-command-execution/ author: Nasreddine Bencherchali (Nextron Systems), E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community date: 2022-06-14 modified: 2023-01-04 tags: - attack.execution - attack.t1059 logsource: category: process_creation product: windows detection: selection: Image|endswith: \pcalua.exe CommandLine|contains: ' -a' condition: selection falsepositives: - Legitimate use by a via a batch script or by an administrator. level: medium