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Analysis
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max time kernel
131s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
31/01/2023, 17:35
Behavioral task
behavioral1
Sample
f60f404494766df289220f643e5ca730.xls
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
f60f404494766df289220f643e5ca730.xls
Resource
win10v2004-20220812-en
General
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Target
f60f404494766df289220f643e5ca730.xls
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Size
364KB
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MD5
f60f404494766df289220f643e5ca730
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SHA1
386d63dc8623b901e02293e107dc58f280c09823
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SHA256
686afc6fb753f15bed690defac787693d35a4afe6c8ac2709d8c53bfad119df8
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SHA512
fe0d72f44a233bdea685daeb740285b82861b8e016e8e9b2ec405afb2b27f71f64b723e80eb49bc3a3f9a92065444fd2b3096368ec008ebd7bc8915352fd39b2
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SSDEEP
3072:cXBlllllllllllllllllllllllllXO7WXW1+cCUQCiWqAZffIXdHMnIr2FhqDow2:j7WXWkWvfhWYlF73k
Malware Config
Signatures
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Process spawned unexpected child process 3 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 612 3576 cmd.exe 80 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2320 3576 cmd.exe 80 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 1960 3576 cmd.exe 80 -
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 -
NTFS ADS 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Local\Temp\11D65E00\:Zone.Identifier:$DATA EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 3576 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 14 IoCs
pid Process 3576 EXCEL.EXE 3576 EXCEL.EXE 3576 EXCEL.EXE 3576 EXCEL.EXE 3576 EXCEL.EXE 3576 EXCEL.EXE 3576 EXCEL.EXE 3576 EXCEL.EXE 3576 EXCEL.EXE 3576 EXCEL.EXE 3576 EXCEL.EXE 3576 EXCEL.EXE 3576 EXCEL.EXE 3576 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 3576 wrote to memory of 612 3576 EXCEL.EXE 84 PID 3576 wrote to memory of 612 3576 EXCEL.EXE 84 PID 3576 wrote to memory of 2320 3576 EXCEL.EXE 86 PID 3576 wrote to memory of 2320 3576 EXCEL.EXE 86 PID 3576 wrote to memory of 1960 3576 EXCEL.EXE 87 PID 3576 wrote to memory of 1960 3576 EXCEL.EXE 87 PID 612 wrote to memory of 4220 612 cmd.exe 90 PID 612 wrote to memory of 4220 612 cmd.exe 90 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 4220 attrib.exe
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\f60f404494766df289220f643e5ca730.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3576 -
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:612 -
C:\Windows\system32\attrib.exeattrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"3⤵
- Views/modifies file attributes
PID:4220
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c Del /F /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"2⤵
- Process spawned unexpected child process
PID:2320
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c RD /S /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"2⤵
- Process spawned unexpected child process
PID:1960
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