Analysis
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max time kernel
150s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
28-02-2024 13:40
Behavioral task
behavioral1
Sample
ac03a2d9b008d75a4d5781ba90d6ab75.xls
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
ac03a2d9b008d75a4d5781ba90d6ab75.xls
Resource
win10v2004-20240226-en
General
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Target
ac03a2d9b008d75a4d5781ba90d6ab75.xls
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Size
36KB
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MD5
ac03a2d9b008d75a4d5781ba90d6ab75
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SHA1
043f1af8805ea0cb21c958d1535b87a3fb195c0a
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SHA256
aca489f0fc8955260e4fb24aacc59a261891fd40e0fbcfcc3be9cc651b8035eb
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SHA512
817556ad5eb6e876ce789d5e8f52f9e68ca70e5778ce08e094e7a3ba1ad545521005f38cbd627c56e961bd533d12e4b99ef5b3c3d86e4aede3de9292090f69f2
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SSDEEP
768:2PqNk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJKdJFIAxh7usSLVN:Kok3hbdlylKsgqopeJBWhZFGkE+cL2N0
Malware Config
Signatures
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Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
explorer.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 1940 2616 explorer.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 -
Modifies registry class 1 IoCs
Processes:
explorer.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000_Classes\Local Settings explorer.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 2616 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
EXCEL.EXEpid process 2616 EXCEL.EXE 2616 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 14 IoCs
Processes:
EXCEL.EXEpid process 2616 EXCEL.EXE 2616 EXCEL.EXE 2616 EXCEL.EXE 2616 EXCEL.EXE 2616 EXCEL.EXE 2616 EXCEL.EXE 2616 EXCEL.EXE 2616 EXCEL.EXE 2616 EXCEL.EXE 2616 EXCEL.EXE 2616 EXCEL.EXE 2616 EXCEL.EXE 2616 EXCEL.EXE 2616 EXCEL.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
EXCEL.EXEexplorer.exedescription pid process target process PID 2616 wrote to memory of 1940 2616 EXCEL.EXE explorer.exe PID 2616 wrote to memory of 1940 2616 EXCEL.EXE explorer.exe PID 1852 wrote to memory of 876 1852 explorer.exe WScript.exe PID 1852 wrote to memory of 876 1852 explorer.exe WScript.exe
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\ac03a2d9b008d75a4d5781ba90d6ab75.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2616 -
C:\Windows\explorer.exeexplorer.exe C:\Users\Public\Documents\nPrrovD.vbs2⤵
- Process spawned unexpected child process
PID:1940
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C:\Windows\explorer.exeC:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1852 -
C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Public\Documents\nPrrovD.vbs"2⤵PID:876
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
600B
MD52a16944dcbb437e12f999aa101f0f26d
SHA190e71d0eb96ff41adb88bea69c8394c67e3cd79a
SHA25601523f1774ea0eb6b7502ca98031addb047f3d8a2c6dd8dc9f7f0dbebffdca55
SHA51211efd37fafbfb0eb0bef4d8a5b9f40dad401902697c1b0c8661a0bd4cfb055375b27b472f135d5b342f3c304f9cc4d3b5298d0ea016ea458d176367ca4fe3813