Analysis
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max time kernel
149s -
max time network
185s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
26-11-2022 03:09
Behavioral task
behavioral1
Sample
43d4bb7a5498ca535c4ae3daedf83858812b87bae3ad8e63fd616170f53fda4c.xls
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
43d4bb7a5498ca535c4ae3daedf83858812b87bae3ad8e63fd616170f53fda4c.xls
Resource
win10v2004-20220812-en
General
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Target
43d4bb7a5498ca535c4ae3daedf83858812b87bae3ad8e63fd616170f53fda4c.xls
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Size
133KB
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MD5
5dc23c1bb522f648a3378927810144f9
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SHA1
63bc0c9254d171c58112b1ddc68ada977adc4492
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SHA256
43d4bb7a5498ca535c4ae3daedf83858812b87bae3ad8e63fd616170f53fda4c
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SHA512
5d7e7d733799d3df9bb142ae490d9a2be73eb332293ec7dbbd405b7b5d105a3cd8095e1c290aea83ca5557895339a28b51b4177dd6ea05d811b22ce8812ab42f
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SSDEEP
1536:NpbrbuT5D8JJJ2ARaTraw83iU2jcc0lbxOvTgZ80I/cJtXwPvS:uAN2jcc0lbxOrwIEJtXwnS
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 3384 3580 cmd.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4548 3580 cmd.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4348 3580 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\33585E00\:Zone.Identifier:$DATA EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 3580 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 14 IoCs
Processes:
EXCEL.EXEpid process 3580 EXCEL.EXE 3580 EXCEL.EXE 3580 EXCEL.EXE 3580 EXCEL.EXE 3580 EXCEL.EXE 3580 EXCEL.EXE 3580 EXCEL.EXE 3580 EXCEL.EXE 3580 EXCEL.EXE 3580 EXCEL.EXE 3580 EXCEL.EXE 3580 EXCEL.EXE 3580 EXCEL.EXE 3580 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
EXCEL.EXEcmd.exedescription pid process target process PID 3580 wrote to memory of 3384 3580 EXCEL.EXE cmd.exe PID 3580 wrote to memory of 3384 3580 EXCEL.EXE cmd.exe PID 3580 wrote to memory of 4348 3580 EXCEL.EXE cmd.exe PID 3580 wrote to memory of 4348 3580 EXCEL.EXE cmd.exe PID 3580 wrote to memory of 4548 3580 EXCEL.EXE cmd.exe PID 3580 wrote to memory of 4548 3580 EXCEL.EXE cmd.exe PID 3384 wrote to memory of 3088 3384 cmd.exe attrib.exe PID 3384 wrote to memory of 3088 3384 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\43d4bb7a5498ca535c4ae3daedf83858812b87bae3ad8e63fd616170f53fda4c.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 RD /S /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 Del /F /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/3088-142-0x0000000000000000-mapping.dmp
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memory/3384-139-0x0000000000000000-mapping.dmp
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memory/3580-132-0x00007FFB9B4D0000-0x00007FFB9B4E0000-memory.dmpFilesize
64KB
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memory/3580-133-0x00007FFB9B4D0000-0x00007FFB9B4E0000-memory.dmpFilesize
64KB
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memory/3580-134-0x00007FFB9B4D0000-0x00007FFB9B4E0000-memory.dmpFilesize
64KB
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memory/3580-135-0x00007FFB9B4D0000-0x00007FFB9B4E0000-memory.dmpFilesize
64KB
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memory/3580-136-0x00007FFB9B4D0000-0x00007FFB9B4E0000-memory.dmpFilesize
64KB
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memory/3580-137-0x00007FFB99260000-0x00007FFB99270000-memory.dmpFilesize
64KB
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memory/3580-138-0x00007FFB99260000-0x00007FFB99270000-memory.dmpFilesize
64KB
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memory/4348-140-0x0000000000000000-mapping.dmp
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memory/4548-141-0x0000000000000000-mapping.dmp