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Analysis
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max time kernel
143s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system -
submitted
20/09/2023, 12:26
Behavioral task
behavioral1
Sample
catalog-2048582418.xlsm
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
catalog-2048582418.xlsm
Resource
win10v2004-20230915-en
General
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Target
catalog-2048582418.xlsm
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Size
81KB
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MD5
b5f20259cc4d16c9608f7cc90e2df35b
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SHA1
c770a08241951d06e7c900f557cfaade4268c246
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SHA256
f5bfcf48c0cd34368b28b8ed027ef2c09d47133720f767633b2c1f8da3bb4b0e
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SHA512
3495abe20f881b5d201e1f3c56f0728d99cf645c7d2f3f799fe0d976caddd6fc38499ef1c9ed31a8fa1dfa2917d2d81ffe83098a375587bb83729d483ff31f98
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SSDEEP
1536:bhvD0tUn/dDuL7QQ64eyZJViW++poHndClu286aYbgBF+iyffn5:bVjwXQQteyZJAW++4dF286aYbgEfh
Malware Config
Extracted
http://halle-auer20h.ru.com/lenta.html
https://acienciaparaficarrico.com.br/drms/lenta.html
https://deccanrestaurant.co.uk/drms/lenta.html
https://steilppm.ac.id/drms/lenta.html
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 1240 4916 rundll32.exe 29 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3656 4916 rundll32.exe 29 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 5056 4916 rundll32.exe 29 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 788 4916 rundll32.exe 29 -
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 4916 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 4916 EXCEL.EXE 4916 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 14 IoCs
pid Process 4916 EXCEL.EXE 4916 EXCEL.EXE 4916 EXCEL.EXE 4916 EXCEL.EXE 4916 EXCEL.EXE 4916 EXCEL.EXE 4916 EXCEL.EXE 4916 EXCEL.EXE 4916 EXCEL.EXE 4916 EXCEL.EXE 4916 EXCEL.EXE 4916 EXCEL.EXE 4916 EXCEL.EXE 4916 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 4916 wrote to memory of 1240 4916 EXCEL.EXE 88 PID 4916 wrote to memory of 1240 4916 EXCEL.EXE 88 PID 4916 wrote to memory of 3656 4916 EXCEL.EXE 89 PID 4916 wrote to memory of 3656 4916 EXCEL.EXE 89 PID 4916 wrote to memory of 5056 4916 EXCEL.EXE 90 PID 4916 wrote to memory of 5056 4916 EXCEL.EXE 90 PID 4916 wrote to memory of 788 4916 EXCEL.EXE 91 PID 4916 wrote to memory of 788 4916 EXCEL.EXE 91
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\catalog-2048582418.xlsm"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:4916 -
C:\Windows\SYSTEM32\rundll32.exerundll32 ..\xtjxjt.sdfg1,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:1240
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C:\Windows\SYSTEM32\rundll32.exerundll32 ..\xtjxjt.sdfg2,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:3656
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C:\Windows\SYSTEM32\rundll32.exerundll32 ..\xtjxjt.sdfg3,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:5056
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C:\Windows\SYSTEM32\rundll32.exerundll32 ..\xtjxjt.sdfg4,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:788
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