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Analysis
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max time kernel
151s -
max time network
157s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
31/12/2023, 02:07
Behavioral task
behavioral1
Sample
23ebbb920e5e5c9815337e3069c90e2a.xls
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
23ebbb920e5e5c9815337e3069c90e2a.xls
Resource
win10v2004-20231215-en
General
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Target
23ebbb920e5e5c9815337e3069c90e2a.xls
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Size
36KB
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MD5
23ebbb920e5e5c9815337e3069c90e2a
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SHA1
bbd7400c042d387dd2b31b0a016d07b8f28fdebe
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SHA256
ef14dfd11872d5868c868d851f791f44d60a95ae4f1743fe3be0dc466c1d2e3a
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SHA512
3db70047fec5cbf07aef3932d8237ddca7548a08e6fc54e7095240f3147f54cb087a3898acd8d059304cf263e35e9cd691fe8725dd7c75495cc9b4a174025371
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SSDEEP
768:cPqNk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJWGqJTF6qEv:Iok3hbdlylKsgqopeJBWhZFGkE+cL2Ny
Malware Config
Signatures
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Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
description pid pid_target Process procid_target Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4640 5084 explorer.exe 14 -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000_Classes\Local Settings explorer.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 5084 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 5084 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 5084 EXCEL.EXE 5084 EXCEL.EXE 5084 EXCEL.EXE 5084 EXCEL.EXE 5084 EXCEL.EXE 5084 EXCEL.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 5084 wrote to memory of 4640 5084 EXCEL.EXE 92 PID 5084 wrote to memory of 4640 5084 EXCEL.EXE 92 PID 1644 wrote to memory of 3336 1644 explorer.exe 94 PID 1644 wrote to memory of 3336 1644 explorer.exe 94
Processes
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C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\23ebbb920e5e5c9815337e3069c90e2a.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5084 -
C:\Windows\explorer.exeexplorer.exe C:\Users\Public\Documents\Sk1WDhc.vbs2⤵
- Process spawned unexpected child process
PID:4640
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C:\Windows\explorer.exeC:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1644 -
C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Public\Documents\Sk1WDhc.vbs"2⤵PID:3336
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
560B
MD581aa64d53881c78f42261dd82034d906
SHA1922c1a39e01c46841895aaf30ed85937dd829725
SHA256e2ae377e7e0149b942da8e0045d5ebcbaee3e1c5c554de48b70bdfb6f36bf2a6
SHA5124198a623bfeed95267b579b8a173f03172cda3f6a087dd1f7140c0f5a47b2bd1ffd89cbfab9278711f94f3ae7ab9f9fac831b503ef1f67153b98c6b7db38cb3d