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.
Processes:
cmd.execmd.execmd.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3500 4692 cmd.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2544 4692 cmd.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2792 4692 cmd.exe EXCEL.EXE -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
EXCEL.EXEdescription 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
Processes:
EXCEL.EXEdescription 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
Processes:
EXCEL.EXEdescription ioc process File created C:\Users\Admin\AppData\Local\Temp\86D65E00\:Zone.Identifier:$DATA EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 4692 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 14 IoCs
Processes:
EXCEL.EXEpid 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
Processes:
EXCEL.EXEcmd.exedescription pid process target process PID 4692 wrote to memory of 3500 4692 EXCEL.EXE cmd.exe PID 4692 wrote to memory of 3500 4692 EXCEL.EXE cmd.exe PID 4692 wrote to memory of 2544 4692 EXCEL.EXE cmd.exe PID 4692 wrote to memory of 2544 4692 EXCEL.EXE cmd.exe PID 4692 wrote to memory of 2792 4692 EXCEL.EXE cmd.exe PID 4692 wrote to memory of 2792 4692 EXCEL.EXE cmd.exe PID 3500 wrote to memory of 484 3500 cmd.exe attrib.exe PID 3500 wrote to memory of 484 3500 cmd.exe attrib.exe -
Views/modifies file attributes 1 TTPs 1 IoCs
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
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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
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C:\Windows\system32\attrib.exeattrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"3⤵
- Views/modifies file attributes
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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
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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
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/484-142-0x0000000000000000-mapping.dmp
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memory/2544-140-0x0000000000000000-mapping.dmp
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memory/2792-141-0x0000000000000000-mapping.dmp
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memory/3500-139-0x0000000000000000-mapping.dmp
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memory/4692-136-0x00007FFC713F0000-0x00007FFC71400000-memory.dmpFilesize
64KB
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memory/4692-137-0x00007FFC6F060000-0x00007FFC6F070000-memory.dmpFilesize
64KB
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memory/4692-138-0x00007FFC6F060000-0x00007FFC6F070000-memory.dmpFilesize
64KB
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memory/4692-132-0x00007FFC713F0000-0x00007FFC71400000-memory.dmpFilesize
64KB
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memory/4692-135-0x00007FFC713F0000-0x00007FFC71400000-memory.dmpFilesize
64KB
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memory/4692-134-0x00007FFC713F0000-0x00007FFC71400000-memory.dmpFilesize
64KB
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memory/4692-133-0x00007FFC713F0000-0x00007FFC71400000-memory.dmpFilesize
64KB
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memory/4692-143-0x000001651640F000-0x0000016516411000-memory.dmpFilesize
8KB
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memory/4692-145-0x00007FFC713F0000-0x00007FFC71400000-memory.dmpFilesize
64KB
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memory/4692-146-0x00007FFC713F0000-0x00007FFC71400000-memory.dmpFilesize
64KB
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memory/4692-147-0x00007FFC713F0000-0x00007FFC71400000-memory.dmpFilesize
64KB
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memory/4692-148-0x00007FFC713F0000-0x00007FFC71400000-memory.dmpFilesize
64KB