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Analysis
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max time kernel
147s -
max time network
139s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
11/02/2023, 02:21
Behavioral task
behavioral1
Sample
5ffa4cb3f7db82c5db94ff5a288f132602383e285c9f110ba3b2eae848b2e946.xls
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
5ffa4cb3f7db82c5db94ff5a288f132602383e285c9f110ba3b2eae848b2e946.xls
Resource
win10v2004-20220901-en
General
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Target
5ffa4cb3f7db82c5db94ff5a288f132602383e285c9f110ba3b2eae848b2e946.xls
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Size
92KB
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MD5
c8d86480cae889d55896e2642369a5f1
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SHA1
5912e9a715533d5b9110daab4dbafe49236c8891
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SHA256
5ffa4cb3f7db82c5db94ff5a288f132602383e285c9f110ba3b2eae848b2e946
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SHA512
8b7182cdd30b1a95412bd847c30ff32e2493c5c445a0fcea12ce5801db7b3657a5230b328db66b44994c195862ffd7187acd972d771f8182e54b750563ef7714
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SSDEEP
1536:/Vk3hOdsylKlgxopeiBNhZFGzE+cL2kdApbCXuZH4gb4CEn9J4ZKnQxW:tk3hOdsylKlgxopeiBNhZFGzE+cL2kdH
Malware Config
Extracted
http://www.muyehuayi.com/cmp/8asA99KPsyA/v6lUsWbLen/
http://concivilpa.com.py/wp-admin/i3CQu9dzDrMW/
https://wijsneusmedia.nl/cgi-bin/kFB/
http://www.angloextrema.com.br/assets/oEt1yYckHKlnNIq/
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 100 4988 regsvr32.exe 80 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 228 4988 regsvr32.exe 80 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 5072 4988 regsvr32.exe 80 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2680 4988 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\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
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4988 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 4988 EXCEL.EXE 4988 EXCEL.EXE 4988 EXCEL.EXE 4988 EXCEL.EXE 4988 EXCEL.EXE 4988 EXCEL.EXE 4988 EXCEL.EXE 4988 EXCEL.EXE 4988 EXCEL.EXE 4988 EXCEL.EXE 4988 EXCEL.EXE 4988 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 4988 wrote to memory of 100 4988 EXCEL.EXE 82 PID 4988 wrote to memory of 100 4988 EXCEL.EXE 82 PID 4988 wrote to memory of 228 4988 EXCEL.EXE 83 PID 4988 wrote to memory of 228 4988 EXCEL.EXE 83 PID 4988 wrote to memory of 5072 4988 EXCEL.EXE 84 PID 4988 wrote to memory of 5072 4988 EXCEL.EXE 84 PID 4988 wrote to memory of 2680 4988 EXCEL.EXE 85 PID 4988 wrote to memory of 2680 4988 EXCEL.EXE 85
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\5ffa4cb3f7db82c5db94ff5a288f132602383e285c9f110ba3b2eae848b2e946.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4988 -
C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv1.ooocccxxx2⤵
- Process spawned unexpected child process
PID:100
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv2.ooocccxxx2⤵
- Process spawned unexpected child process
PID:228
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv3.ooocccxxx2⤵
- Process spawned unexpected child process
PID:5072
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv4.ooocccxxx2⤵
- Process spawned unexpected child process
PID:2680
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