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Analysis
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max time kernel
160s -
max time network
181s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
11/02/2023, 02:22
Behavioral task
behavioral1
Sample
434b81fd41ad827df4f81983828f43234278ccff8e5b13955200842d3a293ec0.xls
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
434b81fd41ad827df4f81983828f43234278ccff8e5b13955200842d3a293ec0.xls
Resource
win10v2004-20220812-en
General
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Target
434b81fd41ad827df4f81983828f43234278ccff8e5b13955200842d3a293ec0.xls
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Size
217KB
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MD5
0f91ec3735820b2bb1bf5b08716c4edb
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SHA1
91681fbec7a9e3aebf825cbc0034eb0777761783
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SHA256
434b81fd41ad827df4f81983828f43234278ccff8e5b13955200842d3a293ec0
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SHA512
99afb68db028567cfc0cad59d2d3ff4feffc4a3480c65d2200da2432f2b1df066187bbecc529bb45f88d2fc854d30b735850f34fefb0710f1eba9f0f559afefc
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SSDEEP
6144:HKpb8rGYrMPe3q7Q0XV5xtuEsi8/dgByY+TAQXTHGUMEyP5p6f5jQmo:BbGUMVWlbo
Malware Config
Extracted
http://ftp.agir-santeinternationale.com/doctors/KAacngW97n4ApzVBDdGy/
http://www.vinyz.com/admin3693/BDFFgAZ6zBRumcUSG/
http://ly.yjlianyi.top/wp-admin/NRAdJ/
http://www.muyehuayi.com/cmp/Vtm2m7z88g/
Signatures
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Process spawned unexpected child process 4 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
description pid pid_target Process procid_target Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3628 4824 regsvr32.exe 80 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 1152 4824 regsvr32.exe 80 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4512 4824 regsvr32.exe 80 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2300 4824 regsvr32.exe 80 -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process 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 Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
description 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
pid Process 4824 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 4824 EXCEL.EXE 4824 EXCEL.EXE 4824 EXCEL.EXE 4824 EXCEL.EXE 4824 EXCEL.EXE 4824 EXCEL.EXE 4824 EXCEL.EXE 4824 EXCEL.EXE 4824 EXCEL.EXE 4824 EXCEL.EXE 4824 EXCEL.EXE 4824 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 4824 wrote to memory of 3628 4824 EXCEL.EXE 85 PID 4824 wrote to memory of 3628 4824 EXCEL.EXE 85 PID 4824 wrote to memory of 1152 4824 EXCEL.EXE 88 PID 4824 wrote to memory of 1152 4824 EXCEL.EXE 88 PID 4824 wrote to memory of 4512 4824 EXCEL.EXE 89 PID 4824 wrote to memory of 4512 4824 EXCEL.EXE 89 PID 4824 wrote to memory of 2300 4824 EXCEL.EXE 90 PID 4824 wrote to memory of 2300 4824 EXCEL.EXE 90
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\434b81fd41ad827df4f81983828f43234278ccff8e5b13955200842d3a293ec0.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4824 -
C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\oxnv1.ooccxx2⤵
- Process spawned unexpected child process
PID:3628
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\oxnv2.ooccxx2⤵
- Process spawned unexpected child process
PID:1152
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\oxnv3.ooccxx2⤵
- Process spawned unexpected child process
PID:4512
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\oxnv4.ooccxx2⤵
- Process spawned unexpected child process
PID:2300
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