Analysis
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max time kernel
186s -
max time network
192s -
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 21:07
Behavioral task
behavioral1
Sample
语文.xls
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
语文.xls
Resource
win10v2004-20220812-en
General
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Target
语文.xls
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Size
155KB
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MD5
affab620cd4c0a0b6b68d9eb1dbddd1e
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SHA1
86d4a4c9328762e7819d9d1203bafa9ceb2e7023
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SHA256
18ee8040609562e0d7890555c27bbf19029a41f724209eb8f49a1c021314e91c
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SHA512
5b5b4fa2eaae68ddab8db99ccfc27eddd0ca13d9a735da5421f18c0a8eb3242279b8dc3857076c0346e5f5bab37ca2492d4b6a32317377481e2504b08756e35e
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SSDEEP
3072:LSVQzu271vEDW3YkWVbrzQ7IjHgkZyDWTtn6KNLk:L0vHj
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 3748 2040 cmd.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 1044 2040 cmd.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 984 2040 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 value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz 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\C6C75E00\:Zone.Identifier:$DATA EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 2040 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 16 IoCs
Processes:
EXCEL.EXEpid process 2040 EXCEL.EXE 2040 EXCEL.EXE 2040 EXCEL.EXE 2040 EXCEL.EXE 2040 EXCEL.EXE 2040 EXCEL.EXE 2040 EXCEL.EXE 2040 EXCEL.EXE 2040 EXCEL.EXE 2040 EXCEL.EXE 2040 EXCEL.EXE 2040 EXCEL.EXE 2040 EXCEL.EXE 2040 EXCEL.EXE 2040 EXCEL.EXE 2040 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
EXCEL.EXEcmd.exedescription pid process target process PID 2040 wrote to memory of 3748 2040 EXCEL.EXE cmd.exe PID 2040 wrote to memory of 3748 2040 EXCEL.EXE cmd.exe PID 2040 wrote to memory of 984 2040 EXCEL.EXE cmd.exe PID 2040 wrote to memory of 984 2040 EXCEL.EXE cmd.exe PID 2040 wrote to memory of 1044 2040 EXCEL.EXE cmd.exe PID 2040 wrote to memory of 1044 2040 EXCEL.EXE cmd.exe PID 3748 wrote to memory of 348 3748 cmd.exe attrib.exe PID 3748 wrote to memory of 348 3748 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\语文.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
Loading Replay Monitor...
Downloads
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memory/348-142-0x0000000000000000-mapping.dmp
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memory/984-140-0x0000000000000000-mapping.dmp
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memory/1044-141-0x0000000000000000-mapping.dmp
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memory/2040-138-0x00007FFAB5780000-0x00007FFAB5790000-memory.dmpFilesize
64KB
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memory/2040-136-0x00007FFAB7CB0000-0x00007FFAB7CC0000-memory.dmpFilesize
64KB
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memory/2040-137-0x00007FFAB5780000-0x00007FFAB5790000-memory.dmpFilesize
64KB
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memory/2040-132-0x00007FFAB7CB0000-0x00007FFAB7CC0000-memory.dmpFilesize
64KB
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memory/2040-135-0x00007FFAB7CB0000-0x00007FFAB7CC0000-memory.dmpFilesize
64KB
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memory/2040-134-0x00007FFAB7CB0000-0x00007FFAB7CC0000-memory.dmpFilesize
64KB
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memory/2040-133-0x00007FFAB7CB0000-0x00007FFAB7CC0000-memory.dmpFilesize
64KB
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memory/2040-144-0x00007FFAB7CB0000-0x00007FFAB7CC0000-memory.dmpFilesize
64KB
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memory/2040-145-0x00007FFAB7CB0000-0x00007FFAB7CC0000-memory.dmpFilesize
64KB
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memory/2040-146-0x00007FFAB7CB0000-0x00007FFAB7CC0000-memory.dmpFilesize
64KB
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memory/2040-147-0x00007FFAB7CB0000-0x00007FFAB7CC0000-memory.dmpFilesize
64KB
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memory/3748-139-0x0000000000000000-mapping.dmp