Analysis
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max time kernel
148s -
max time network
151s -
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 21:20
Behavioral task
behavioral1
Sample
1f27d56f0a1d1598591124f21a4a13cc7ae88e1b69ae208f06326b390bb5065b.xls
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
1f27d56f0a1d1598591124f21a4a13cc7ae88e1b69ae208f06326b390bb5065b.xls
Resource
win10v2004-20241007-en
General
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Target
1f27d56f0a1d1598591124f21a4a13cc7ae88e1b69ae208f06326b390bb5065b.xls
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Size
47KB
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MD5
07a8e6bd83c12cd49647fcc32353da25
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SHA1
06b0b3eede09550e8c89fa0e44693d852c188895
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SHA256
1f27d56f0a1d1598591124f21a4a13cc7ae88e1b69ae208f06326b390bb5065b
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SHA512
f4e6b8fab8387d2778699f42a45455ba58a50a4b63a0165b72150464b980fb1913bc958e95103b113f046c2fd039a3642be93b14a537bf7ba60ba7d9a159f607
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SSDEEP
768:4DM52tfQXi8vgLZkTOHkQT51Vp6AwPdM8gQ6JT5X6DGwUdh+pqjeSLjcvLtzrxFW:462tfQXi8vgLZkTOHkQT51Vp6AwPe8gD
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 1680 3132 regsvr32.exe 81 -
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 3132 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 3132 EXCEL.EXE 3132 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 14 IoCs
pid Process 3132 EXCEL.EXE 3132 EXCEL.EXE 3132 EXCEL.EXE 3132 EXCEL.EXE 3132 EXCEL.EXE 3132 EXCEL.EXE 3132 EXCEL.EXE 3132 EXCEL.EXE 3132 EXCEL.EXE 3132 EXCEL.EXE 3132 EXCEL.EXE 3132 EXCEL.EXE 3132 EXCEL.EXE 3132 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 3132 wrote to memory of 1680 3132 EXCEL.EXE 89 PID 3132 wrote to memory of 1680 3132 EXCEL.EXE 89
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\1f27d56f0a1d1598591124f21a4a13cc7ae88e1b69ae208f06326b390bb5065b.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:3132 -
C:\Windows\SYSTEM32\regsvr32.exeregsvr32.exe ..\wnrul.ocx2⤵
- Process spawned unexpected child process
PID:1680
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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