Analysis
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max time kernel
173s -
max time network
178s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
25-11-2022 19:26
Behavioral task
behavioral1
Sample
a9bf187a58a7182f5b9b061e6df7cb4b1d08d97bc79184534cbcbd18c98429e8.xls
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
a9bf187a58a7182f5b9b061e6df7cb4b1d08d97bc79184534cbcbd18c98429e8.xls
Resource
win10v2004-20220812-en
General
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Target
a9bf187a58a7182f5b9b061e6df7cb4b1d08d97bc79184534cbcbd18c98429e8.xls
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Size
92KB
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MD5
d5b5f9a2bbcd1dace2067604967cecf9
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SHA1
6dd5d8d7eb265aeba616ba0cf68f5e68cc408451
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SHA256
a9bf187a58a7182f5b9b061e6df7cb4b1d08d97bc79184534cbcbd18c98429e8
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SHA512
175ec07fb1d5ff3edea343501c9a7abf8e875d262f3ae6aacfb32368a51dc74a9def3f391f727bd19eff88b0ad4879f09ca1fffc3512d786b7c1e77a5cba47a0
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SSDEEP
1536:izzzXha7HJzAWDbrzQ7ITkbIOLA23IM88S/JtXwgodJ:YWDbrzQ7ITkEERj2JtXwddJ
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 2980 2476 cmd.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4816 2476 cmd.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4728 2476 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\26D75E00\:Zone.Identifier:$DATA EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 2476 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 14 IoCs
Processes:
EXCEL.EXEpid process 2476 EXCEL.EXE 2476 EXCEL.EXE 2476 EXCEL.EXE 2476 EXCEL.EXE 2476 EXCEL.EXE 2476 EXCEL.EXE 2476 EXCEL.EXE 2476 EXCEL.EXE 2476 EXCEL.EXE 2476 EXCEL.EXE 2476 EXCEL.EXE 2476 EXCEL.EXE 2476 EXCEL.EXE 2476 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
EXCEL.EXEcmd.exedescription pid process target process PID 2476 wrote to memory of 2980 2476 EXCEL.EXE cmd.exe PID 2476 wrote to memory of 2980 2476 EXCEL.EXE cmd.exe PID 2476 wrote to memory of 4816 2476 EXCEL.EXE cmd.exe PID 2476 wrote to memory of 4816 2476 EXCEL.EXE cmd.exe PID 2476 wrote to memory of 4728 2476 EXCEL.EXE cmd.exe PID 2476 wrote to memory of 4728 2476 EXCEL.EXE cmd.exe PID 2980 wrote to memory of 2120 2980 cmd.exe attrib.exe PID 2980 wrote to memory of 2120 2980 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\a9bf187a58a7182f5b9b061e6df7cb4b1d08d97bc79184534cbcbd18c98429e8.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
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Downloads
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memory/2120-142-0x0000000000000000-mapping.dmp
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memory/2476-138-0x00007FF9E3000000-0x00007FF9E3010000-memory.dmpFilesize
64KB
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memory/2476-144-0x00007FF9E5370000-0x00007FF9E5380000-memory.dmpFilesize
64KB
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memory/2476-135-0x00007FF9E5370000-0x00007FF9E5380000-memory.dmpFilesize
64KB
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memory/2476-136-0x00007FF9E5370000-0x00007FF9E5380000-memory.dmpFilesize
64KB
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memory/2476-137-0x00007FF9E3000000-0x00007FF9E3010000-memory.dmpFilesize
64KB
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memory/2476-132-0x00007FF9E5370000-0x00007FF9E5380000-memory.dmpFilesize
64KB
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memory/2476-147-0x00007FF9E5370000-0x00007FF9E5380000-memory.dmpFilesize
64KB
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memory/2476-146-0x00007FF9E5370000-0x00007FF9E5380000-memory.dmpFilesize
64KB
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memory/2476-145-0x00007FF9E5370000-0x00007FF9E5380000-memory.dmpFilesize
64KB
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memory/2476-133-0x00007FF9E5370000-0x00007FF9E5380000-memory.dmpFilesize
64KB
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memory/2476-134-0x00007FF9E5370000-0x00007FF9E5380000-memory.dmpFilesize
64KB
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memory/2980-139-0x0000000000000000-mapping.dmp
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memory/4728-141-0x0000000000000000-mapping.dmp
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memory/4816-140-0x0000000000000000-mapping.dmp