Analysis
- max time kernel
148s - max time network
130s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
30/09/2026, 03:47
Behavioral task
behavioral1
Sample
attachment20260930-1092870-yytzu8.xlsm
Resource
win10v2004-20260911-en
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
attachment20260930-1092870-yytzu8.xlsm
Resource
win11ltsc2024-20260911-en
8 signatures
150 seconds
General
- Target attachment20260930-1092870-yytzu8.xlsm
- Size 555KB
- Sample260930-ecpvzazzbx
- SHA256 7dc6e3106413ad883680745af653b737bc9ae0b2d2599eeb7ee45aeea3a4494f
- MD5 39aa1923e02ff1b6ba0730167cc55165
- SHA1 e78df3924af4b8006325a97a0be7722606c8c60f
- SHA512 54a89b3528b9b09ad04c81bb31af3ce09b53a85f4009a38c5827b99c8ed8af84e0ffbbaae3ab02ae8d0a54b07df3f786ee5a92070c347bb2c5bee35367e84c08
- SSDEEP 12288:stqRgLFbA4XUTzCpOrYUsEV3lol/AWkf/SaBQHD:s+gLNITztKExs//MSJ
- TLSH T1F5C42319E3489C28C25F84B8E1DC10E582AB2B51E522F60F3CACB95C5F9D5774ECE399
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10
Malware Config
Signatures
- Deletes itself 1 TTPs 1 IoCs
pid Process 4128 EXCEL.EXE - 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 - NTFS ADS 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Local\Temp\E3D85E00\:Zone.Identifier:$DATA EXCEL.EXE - Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4128 EXCEL.EXE - Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 4128 EXCEL.EXE 4128 EXCEL.EXE - Suspicious use of SetWindowsHookEx 11 IoCs
pid Process 4128 EXCEL.EXE 4128 EXCEL.EXE 4128 EXCEL.EXE 4128 EXCEL.EXE 4128 EXCEL.EXE 4128 EXCEL.EXE 4128 EXCEL.EXE 4128 EXCEL.EXE 4128 EXCEL.EXE 4128 EXCEL.EXE 4128 EXCEL.EXE - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 4128 wrote to memory of 720 4128 EXCEL.EXE 91
Processes
-
C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\attachment20260930-1092870-yytzu8.xlsm"1⤵
- Deletes itself
- Checks processor information in registry
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4128 -
C:\Windows\splwow64.exeC:\Windows\splwow64.exe 122882⤵PID:720
-
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc1⤵PID:4084
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\E3D85E00
- Size 550KB
- SHA256 e04e8142033047b325483ebcb7f99b47b7195b6966e82376c81eb36eebc4fa1d
- MD5 d6c587e2a1ebdac1f7e0c09952b9592f
- SHA1 221c6b668ec0fdf073c405a76f905872ac15d5ce
- SHA512 50d81889edab5a8667ec0d912fe5bfdf3d2deb32bf769e84e07a64d3488e86e35d402291f203997649ad24adde678cdfecc36df7a5adbb662572e16263f269ff
- SSDEEP 12288:UYeJ04VK6trFlaX4pmUEo1V3rol/AWkKuQHfl:GJRVz1PpmUEexe//Vl
- TLSH T112C4121ADD68CC38D2D998B8D28D80F140675A559637960F30DCA9588B877FB0ECF2ED
- MD5 SHA1 SHA512 SSDEEP TLSH