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Analysis
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max time kernel
102s -
max time network
147s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
31/01/2023, 17:35
Behavioral task
behavioral1
Sample
18cf59a39f2bcba65624698a5333a6cc.xls
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
18cf59a39f2bcba65624698a5333a6cc.xls
Resource
win10v2004-20221111-en
General
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Target
18cf59a39f2bcba65624698a5333a6cc.xls
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Size
374KB
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MD5
18cf59a39f2bcba65624698a5333a6cc
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SHA1
e36fee0800a5db7af08f1543a674cc36b4500eb9
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SHA256
7d4ca9f0993cb838b6918739f45623d466cb98a2217195685372dd8d76785066
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SHA512
edb40398bcec969ca82274eb8ac16ba84b80f871fd17f73e4b84151d1a9ca52f960c7fb51167a72f890b4bccca1480eaa7f5a5f9744d0cf4d4de04488c7300ac
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SSDEEP
6144:2XGSLCvXuzqAsQ4/OEl7B5hiEPpXlou8xuJ1TBFWVAth:SvgE2j
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 3500 4692 cmd.exe 80 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2544 4692 cmd.exe 80 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2792 4692 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\86D65E00\:Zone.Identifier:$DATA EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4692 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 14 IoCs
pid Process 4692 EXCEL.EXE 4692 EXCEL.EXE 4692 EXCEL.EXE 4692 EXCEL.EXE 4692 EXCEL.EXE 4692 EXCEL.EXE 4692 EXCEL.EXE 4692 EXCEL.EXE 4692 EXCEL.EXE 4692 EXCEL.EXE 4692 EXCEL.EXE 4692 EXCEL.EXE 4692 EXCEL.EXE 4692 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 4692 wrote to memory of 3500 4692 EXCEL.EXE 83 PID 4692 wrote to memory of 3500 4692 EXCEL.EXE 83 PID 4692 wrote to memory of 2544 4692 EXCEL.EXE 85 PID 4692 wrote to memory of 2544 4692 EXCEL.EXE 85 PID 4692 wrote to memory of 2792 4692 EXCEL.EXE 86 PID 4692 wrote to memory of 2792 4692 EXCEL.EXE 86 PID 3500 wrote to memory of 484 3500 cmd.exe 89 PID 3500 wrote to memory of 484 3500 cmd.exe 89 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 484 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\18cf59a39f2bcba65624698a5333a6cc.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:4692 -
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:3500 -
C:\Windows\system32\attrib.exeattrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"3⤵
- Views/modifies file attributes
PID:484
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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:2544
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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:2792
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