Analysis
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max time kernel
148s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
20-11-2024 16:50
Behavioral task
behavioral1
Sample
159aa84aae82f19779e73e0f8e8d82b7503b23740f946f79dc0b29ac7413e114.xls
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
159aa84aae82f19779e73e0f8e8d82b7503b23740f946f79dc0b29ac7413e114.xls
Resource
win10v2004-20241007-en
General
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Target
159aa84aae82f19779e73e0f8e8d82b7503b23740f946f79dc0b29ac7413e114.xls
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Size
47KB
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MD5
fdc9219b6986a4f508aa6dd2e4f85320
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SHA1
9ea577bdeb5bc2917cd372a477631c1250a486c5
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SHA256
159aa84aae82f19779e73e0f8e8d82b7503b23740f946f79dc0b29ac7413e114
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SHA512
f74a3f0bfb2b33ad14b7c34c6c2f878f76ddd4b6eb2b5eac10da71efce20784672897e0e49f7a3333650651b3bff03ef781003ff81fee7e2abd913b3aeca7471
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SSDEEP
768:4DM52tfQXi8vgLZkTOHkQT51Vp6AwPdM8gQ6JT5X6DGwUdh+pqjeSLjcvLtzrxFm:462tfQXi8vgLZkTOHkQT51Vp6AwPe8gz
Malware Config
Extracted
https://www.escueladecinemza.com.ar/_installation/IBlj/
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.
description pid pid_target Process procid_target Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 1488 4468 regsvr32.exe 82 -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description 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
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 4468 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 4468 EXCEL.EXE 4468 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 14 IoCs
pid Process 4468 EXCEL.EXE 4468 EXCEL.EXE 4468 EXCEL.EXE 4468 EXCEL.EXE 4468 EXCEL.EXE 4468 EXCEL.EXE 4468 EXCEL.EXE 4468 EXCEL.EXE 4468 EXCEL.EXE 4468 EXCEL.EXE 4468 EXCEL.EXE 4468 EXCEL.EXE 4468 EXCEL.EXE 4468 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 4468 wrote to memory of 1488 4468 EXCEL.EXE 95 PID 4468 wrote to memory of 1488 4468 EXCEL.EXE 95
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\159aa84aae82f19779e73e0f8e8d82b7503b23740f946f79dc0b29ac7413e114.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:4468 -
C:\Windows\SYSTEM32\regsvr32.exeregsvr32.exe ..\wnrul.ocx2⤵
- Process spawned unexpected child process
PID:1488
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
86KB
MD5dfdb83bd3445e3f2ea46b104976c8d43
SHA178e1237f69e9ba18a68a2c72b6a78179fc01c29b
SHA25676e4a6a2d7ade92678bdc5dd447199ce8f16496d32b36b000726053a89e89443
SHA5126950cad2b1e7f9a20015ee358a44a7def9db96cb395c21a21fece6348e24cf4d307e10091b5f84edeb84368d9f435a82366ed992bcb372e078571a7b97cc328a