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Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
28/12/2023, 06:16
Behavioral task
behavioral1
Sample
caef107cfedd9ee277c0d9091c8cc3d9.xls
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
caef107cfedd9ee277c0d9091c8cc3d9.xls
Resource
win10v2004-20231215-en
General
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Target
caef107cfedd9ee277c0d9091c8cc3d9.xls
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Size
36KB
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MD5
caef107cfedd9ee277c0d9091c8cc3d9
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SHA1
b59c754f5b4cc12ea81e7786a528b640cc273528
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SHA256
a2057ca36d8ba7ee7863ebdc53a99d09a3903f4f92f0a524b0943d8b75cbef5a
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SHA512
ce9fb85d135dd268edd97f72455b8cc3e4cebbe8fd552e06777018264079ff149347177359edfdef9f728e79d7afcf8b2c75b82f8c182cb084ad03d7668ee43e
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SSDEEP
768:RPqNk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJ1QTk8Pv89uhTeox:Zok3hbdlylKsgqopeJBWhZFGkE+cL2NX
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 2688 5068 explorer.exe 82 -
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-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings explorer.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 5068 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 5068 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 5068 EXCEL.EXE 5068 EXCEL.EXE 5068 EXCEL.EXE 5068 EXCEL.EXE 5068 EXCEL.EXE 5068 EXCEL.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 5068 wrote to memory of 2688 5068 EXCEL.EXE 93 PID 5068 wrote to memory of 2688 5068 EXCEL.EXE 93 PID 2292 wrote to memory of 3648 2292 explorer.exe 94 PID 2292 wrote to memory of 3648 2292 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\caef107cfedd9ee277c0d9091c8cc3d9.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:5068 -
C:\Windows\explorer.exeexplorer.exe C:\Users\Public\Documents\z1gz.vbs2⤵
- Process spawned unexpected child process
PID:2688
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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:2292 -
C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Public\Documents\z1gz.vbs"2⤵PID:3648
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