Analysis
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max time kernel
147s -
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
27-02-2024 09:36
Static task
static1
Behavioral task
behavioral1
Sample
a8d31615714628c60a43b42327534c63.xls
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
a8d31615714628c60a43b42327534c63.xls
Resource
win10v2004-20240226-en
General
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Target
a8d31615714628c60a43b42327534c63.xls
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Size
1014KB
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MD5
a8d31615714628c60a43b42327534c63
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SHA1
7079943b612e427ada6a4e0bd9d1bba80501a58e
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SHA256
7e962d426bd5b1df9b48697741f47ba5275b1d730dae04d370ded8a20282f82f
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SHA512
ef390604e1de9bc47a7e4302e32c2b9a63b4b5fd80fb9eb2a6be01be37cdfa20f9d44641a8136067f7d6cc71492706b74f786b576cfc225a58c040dfd69500b9
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SSDEEP
12288:4A579njioXPKBCe2N0LfIZiAhe92KW70TJoE2Ij:77rmIbe9HoE2Ij
Malware Config
Signatures
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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 5040 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 5040 EXCEL.EXE 5040 EXCEL.EXE 5040 EXCEL.EXE 5040 EXCEL.EXE 5040 EXCEL.EXE 5040 EXCEL.EXE 5040 EXCEL.EXE 5040 EXCEL.EXE 5040 EXCEL.EXE 5040 EXCEL.EXE 5040 EXCEL.EXE 5040 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 5040 wrote to memory of 3120 5040 EXCEL.EXE splwow64.exe PID 5040 wrote to memory of 3120 5040 EXCEL.EXE splwow64.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\a8d31615714628c60a43b42327534c63.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5040 -
C:\Windows\splwow64.exeC:\Windows\splwow64.exe 122882⤵PID:3120
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc1⤵PID:4084