Analysis
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max time kernel
151s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
28-04-2024 04:17
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
b14962c7c77bf46fcc0b49b5aae60a55c306611a08656be14b0b3ea63df85f32.dll
Resource
win7-20240221-en
windows7-x64
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
b14962c7c77bf46fcc0b49b5aae60a55c306611a08656be14b0b3ea63df85f32.dll
Resource
win10v2004-20240226-en
windows10-2004-x64
4 signatures
150 seconds
General
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Target
b14962c7c77bf46fcc0b49b5aae60a55c306611a08656be14b0b3ea63df85f32.dll
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Size
2.7MB
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MD5
05ad7d045156eaed2587bd77f701ccd0
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SHA1
3108cdb067a8ee49f2ee4acfc4d5602fe22f633a
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SHA256
b14962c7c77bf46fcc0b49b5aae60a55c306611a08656be14b0b3ea63df85f32
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SHA512
0aaf081a2919b90164068f653279038a00572c118f58f3d7c4774cc67c8345273d7f5c069330ec3de1a6d3fd04f909320ed27d03f01425ee579b046562926f88
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SSDEEP
49152:E8yXJCM1lKgpGmsLwK2mX/eQdjjSjhTSGIo8Y70UiBqMmP3e1zo0kfrFaBdT+E:E8yL1mm0wKh3djm2Uyf9OrQT+E
Score
7/10
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 564 EF03.tmp -
Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\OFFICE16\msvcr120.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\Interceptor.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\STSCOPY.DLL EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\MSVCR110.DLL EF03.tmp File opened for modification C:\Program Files\7-Zip\7z.sfx EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\OFFICE16\MSOIDCLIL.DLL EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Analysis Services\AS OLEDB\140\msolap.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Analysis Services\AS OLEDB\140\SQLDumper.exe EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\NPSPWRAP.DLL EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\OCHelper.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\OFFICE16\MSO.DLL EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\VVIEWER.DLL EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\NAMEEXT.DLL EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\OWSSUPP.DLL EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\Web Server Extensions\16\BIN\FPSRVUTL.DLL EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\OFFICE16\ADAL.DLL EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\OFFICE16\mfc140u.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\NAME.DLL EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\EQUATION\concrt140.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\EQUATION\mfc140u.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\GROOVEEX.DLL EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\mfc140u.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\VVIEWDWG.DLL EF03.tmp File opened for modification C:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe EF03.tmp File opened for modification C:\Program Files\7-Zip\7zCon.sfx EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Analysis Services\AS OLEDB\140\msmdlocal.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\AppSharingHookController.exe EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\JitV.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\SystemX86\mfc140.dll EF03.tmp File opened for modification C:\Program Files\Common Files\microsoft shared\ClickToRun\C2R32.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Analysis Services\AS OLEDB\140\dbghelp.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\msvcr120.dll EF03.tmp File opened for modification C:\Program Files\Mozilla Firefox\uninstall\helper.exe EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\Web Server Extensions\16\BIN\FPWEC.DLL EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\OFFICE16\ADALPREVIOUS.DLL EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\OFFICE16\Mso40UIwin32client.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\OFFICE16\Mso98win32client.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\EQUATION\msvcr120.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\MSOHEV.DLL EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\MSOHTMED.EXE EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\ONBttnIE.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\ONLNTCOMLIB.DLL EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\OWSCLT.DLL EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\PPSLAX.DLL EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\MeetingJoinAxOC.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\OFFICE16\Csi.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\OFFICE16\Mso20win32client.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\Portal\PortalConnectCore.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\MSOSB.DLL EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\filecompare.exe EF03.tmp File opened for modification C:\Program Files\7-Zip\Uninstall.exe EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\OFFICE16\ONNXRuntime-0.5.X.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Analysis Services\AS OLEDB\140\msmgdsrv.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Analysis Services\AS OLEDB\140\msolui.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\concrt140.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\URLREDIR.DLL EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\OFFICE16\concrt140.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\OFFICE16\msoshext.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Analysis Services\AS OLEDB\140\xmsrv.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\OFFICE16\Mso30win32client.dll EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\OFFICE16\MSOXMLMF.DLL EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\IEAWSDC.DLL EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\OLKFSTUB.DLL EF03.tmp File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\ONBttnIELinkedNotes.dll EF03.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2992 rundll32.exe 2992 rundll32.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2960 wrote to memory of 2992 2960 rundll32.exe 90 PID 2960 wrote to memory of 2992 2960 rundll32.exe 90 PID 2960 wrote to memory of 2992 2960 rundll32.exe 90 PID 2992 wrote to memory of 564 2992 rundll32.exe 91 PID 2992 wrote to memory of 564 2992 rundll32.exe 91 PID 2992 wrote to memory of 564 2992 rundll32.exe 91
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\b14962c7c77bf46fcc0b49b5aae60a55c306611a08656be14b0b3ea63df85f32.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2960 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\b14962c7c77bf46fcc0b49b5aae60a55c306611a08656be14b0b3ea63df85f32.dll,#12⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2992 -
C:\Users\Admin\AppData\Local\Temp\EF03.tmpC:\Users\Admin\AppData\Local\Temp\EF03.tmp3⤵
- Executes dropped EXE
- Drops file in Program Files directory
PID:564
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4028 --field-trial-handle=2280,i,716736634476467098,11449718822158202904,262144 --variations-seed-version /prefetch:81⤵PID:4184
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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Filesize
145KB
MD5c610e7ccd6859872c585b2a85d7dc992
SHA1362b3d4b72e3add687c209c79b500b7c6a246d46
SHA25614063fc61dc71b9881d75e93a587c27a6daf8779ff5255a24a042beace541041
SHA5128570aad2ae8b5dcba00fc5ebf3dc0ea117e96cc88a83febd820c5811bf617a6431c1367b3eb88332f43f80b30ebe2c298c22dcc44860a075f7b41bf350236666