Analysis
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max time kernel
59s -
max time network
34s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
04-09-2024 22:09
Behavioral task
behavioral1
Sample
c5a2c876c7f5d78801825f71e6dbe0145d6f9967a8c1930d01cf2336f45ffa1b.xls
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
c5a2c876c7f5d78801825f71e6dbe0145d6f9967a8c1930d01cf2336f45ffa1b.xls
Resource
win10v2004-20240802-en
General
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Target
c5a2c876c7f5d78801825f71e6dbe0145d6f9967a8c1930d01cf2336f45ffa1b.xls
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Size
36KB
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MD5
d674ff31458f092405d0325722210e81
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SHA1
c521c429efc9078a34527f0085a4dd9089b178eb
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SHA256
c5a2c876c7f5d78801825f71e6dbe0145d6f9967a8c1930d01cf2336f45ffa1b
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SHA512
0e390ebec8b8cbeb2b809965af0b6d226cb6a0deb08620db3b3a059bf9f74f12fca37c3d1f37b7bb4ac1e5955d7f0bd40a4bb4af3798ec4d855daef3964a6829
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SSDEEP
768:bPqNk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJlcK0hUoYf+ooV:jok3hbdlylKsgqopeJBWhZFGkE+cL2N7
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 2016 2404 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 value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE -
Modifies registry class 1 IoCs
Processes:
explorer.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000_Classes\Local Settings explorer.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 2404 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
EXCEL.EXEpid process 2404 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 6 IoCs
Processes:
EXCEL.EXEpid process 2404 EXCEL.EXE 2404 EXCEL.EXE 2404 EXCEL.EXE 2404 EXCEL.EXE 2404 EXCEL.EXE 2404 EXCEL.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
EXCEL.EXEexplorer.exedescription pid process target process PID 2404 wrote to memory of 2016 2404 EXCEL.EXE explorer.exe PID 2404 wrote to memory of 2016 2404 EXCEL.EXE explorer.exe PID 1292 wrote to memory of 4552 1292 explorer.exe WScript.exe PID 1292 wrote to memory of 4552 1292 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\c5a2c876c7f5d78801825f71e6dbe0145d6f9967a8c1930d01cf2336f45ffa1b.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:2404 -
C:\Windows\explorer.exeexplorer.exe C:\Users\Public\Documents\NB127.vbs2⤵
- Process spawned unexpected child process
PID:2016
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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:1292 -
C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Public\Documents\NB127.vbs"2⤵PID:4552
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
597B
MD533808777eb2b9ed582ba7fdc79781e9c
SHA1bdb5f3b64701de05ef0abfdf4632369d7ab81df4
SHA25645d6efc5d51f8e67751f8e6c03eddb3dd6e1685691977d136d484fa146f679d0
SHA512e8bd296488e5c2a3a2eccde2cdb71fea1da49aae5b679a992d70b69c9904cf5b2500408f9ef4bddc938a47cfac53a207b9a7248776d93882a04abd30e210940f