Analysis
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max time kernel
133s -
max time network
147s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
26-12-2023 09:53
Behavioral task
behavioral1
Sample
6533ebb305b8ec6171acbfdf1cb9d8c1.xls
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
6533ebb305b8ec6171acbfdf1cb9d8c1.xls
Resource
win10v2004-20231215-en
General
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Target
6533ebb305b8ec6171acbfdf1cb9d8c1.xls
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Size
37KB
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MD5
6533ebb305b8ec6171acbfdf1cb9d8c1
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SHA1
5c7ef00abccf8eb6ee04fbcef501001d1e3de8bc
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SHA256
da8caea69dceb74167452937c467602abe04419bfabd539914d3809e637965fc
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SHA512
fbb46b6ebdc674b6bd3a657a87d440914d8a2dc0ac75ba177245943dc5bb335e80acdc08a53d874aa441f9cb4bb2e67b20d59ca92a5179c572635549bdda1bd1
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SSDEEP
768:QPqNk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJ9AC12PeaTnsBbXtGS:8ok3hbdlylKsgqopeJBWhZFGkE+cL2N8
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 4560 4376 explorer.exe 18 -
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-1-5-21-768304381-2824894965-3840216961-1000_Classes\Local Settings explorer.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4376 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4376 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 4376 EXCEL.EXE 4376 EXCEL.EXE 4376 EXCEL.EXE 4376 EXCEL.EXE 4376 EXCEL.EXE 4376 EXCEL.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 4376 wrote to memory of 4560 4376 EXCEL.EXE 38 PID 4376 wrote to memory of 4560 4376 EXCEL.EXE 38 PID 1480 wrote to memory of 4648 1480 explorer.exe 39 PID 1480 wrote to memory of 4648 1480 explorer.exe 39
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\6533ebb305b8ec6171acbfdf1cb9d8c1.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:4376 -
C:\Windows\explorer.exeexplorer.exe C:\Users\Public\Documents\ief.vbs2⤵
- Process spawned unexpected child process
PID:4560
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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:1480 -
C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Public\Documents\ief.vbs"2⤵PID:4648
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