Analysis
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max time kernel
142s -
max time network
157s -
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 19:07
Behavioral task
behavioral1
Sample
3b65f45b8ef1ae7e290bd79f6b4be830b8dcd3dd53ce4b2f3086c356170710a6.xls
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
3b65f45b8ef1ae7e290bd79f6b4be830b8dcd3dd53ce4b2f3086c356170710a6.xls
Resource
win10v2004-20220812-en
General
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Target
3b65f45b8ef1ae7e290bd79f6b4be830b8dcd3dd53ce4b2f3086c356170710a6.xls
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Size
88KB
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MD5
a3ca7b671b6451cdcafd8f47a4e88e75
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SHA1
a508ac5d96b1526c37a808f886c06dfe068fe5e9
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SHA256
3b65f45b8ef1ae7e290bd79f6b4be830b8dcd3dd53ce4b2f3086c356170710a6
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SHA512
85c144a33fdefe5e3b38d4a6b163a844b44605ee3ad60d664d31dcafbe622e35f55095e8b4929cce6e50ff5a7f18ff8064b1dccddd12c493cead5fa51c1f1fe9
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SSDEEP
1536:i222y9MfecOg2jcc0lbxOvTgZsLcY7nJdFoOGIayWU2XKgb/:qg2jcc0lbxOr/p8baq/
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 2816 1664 cmd.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3204 1664 cmd.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3016 1664 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 -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1664 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 11 IoCs
Processes:
EXCEL.EXEpid process 1664 EXCEL.EXE 1664 EXCEL.EXE 1664 EXCEL.EXE 1664 EXCEL.EXE 1664 EXCEL.EXE 1664 EXCEL.EXE 1664 EXCEL.EXE 1664 EXCEL.EXE 1664 EXCEL.EXE 1664 EXCEL.EXE 1664 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
EXCEL.EXEcmd.exedescription pid process target process PID 1664 wrote to memory of 2816 1664 EXCEL.EXE cmd.exe PID 1664 wrote to memory of 2816 1664 EXCEL.EXE cmd.exe PID 1664 wrote to memory of 3204 1664 EXCEL.EXE cmd.exe PID 1664 wrote to memory of 3204 1664 EXCEL.EXE cmd.exe PID 1664 wrote to memory of 3016 1664 EXCEL.EXE cmd.exe PID 1664 wrote to memory of 3016 1664 EXCEL.EXE cmd.exe PID 2816 wrote to memory of 2152 2816 cmd.exe attrib.exe PID 2816 wrote to memory of 2152 2816 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\3b65f45b8ef1ae7e290bd79f6b4be830b8dcd3dd53ce4b2f3086c356170710a6.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- 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
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C:\Windows\system32\werfault.exewerfault.exe /h /shared Global\d65a855610b34564804119bf5f03a030 /t 3480 /p 16641⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/1664-138-0x00007FF9EC8D0000-0x00007FF9EC8E0000-memory.dmpFilesize
64KB
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memory/1664-133-0x00007FF9EEA10000-0x00007FF9EEA20000-memory.dmpFilesize
64KB
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memory/1664-134-0x00007FF9EEA10000-0x00007FF9EEA20000-memory.dmpFilesize
64KB
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memory/1664-135-0x00007FF9EEA10000-0x00007FF9EEA20000-memory.dmpFilesize
64KB
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memory/1664-136-0x00007FF9EEA10000-0x00007FF9EEA20000-memory.dmpFilesize
64KB
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memory/1664-137-0x00007FF9EC8D0000-0x00007FF9EC8E0000-memory.dmpFilesize
64KB
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memory/1664-132-0x00007FF9EEA10000-0x00007FF9EEA20000-memory.dmpFilesize
64KB
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memory/1664-145-0x000002142E062000-0x000002142E064000-memory.dmpFilesize
8KB
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memory/1664-146-0x000002142E062000-0x000002142E064000-memory.dmpFilesize
8KB
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memory/2152-144-0x0000000000000000-mapping.dmp
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memory/2816-141-0x0000000000000000-mapping.dmp
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memory/3016-143-0x0000000000000000-mapping.dmp
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memory/3204-142-0x0000000000000000-mapping.dmp