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Analysis
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max time kernel
149s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
31/01/2023, 17:35
Behavioral task
behavioral1
Sample
26d2b3a92fda89574c74d396d85dec67.xls
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
26d2b3a92fda89574c74d396d85dec67.xls
Resource
win10v2004-20220812-en
General
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Target
26d2b3a92fda89574c74d396d85dec67.xls
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Size
117KB
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MD5
26d2b3a92fda89574c74d396d85dec67
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SHA1
5c239039f7f736427ff061f9c448664bafc1007e
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SHA256
eae8c6ea0030850478baf007d3253bc9dbf9c2d32770ba7849854fcb3c20a493
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SHA512
12450744f25ec19ababe14a279c26cbdb3ffffc4abed302d234c4fc7b8b6a9b503feca787af6d05db42c4451fed933a2c32609de4d0ecd34fdfefc73ec446ada
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SSDEEP
1536:T4HPa4Rz/Sbj13z/vHfQseqZyC23udv3OglgAb3NRKBqN/WwF1klo0UviBuEUIzC:pyC23yOglgAb3NRKEJhwzHKxyTk
Malware Config
Signatures
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Process spawned unexpected child process 3 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 3744 4796 cmd.exe 80 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3956 4796 cmd.exe 80 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 1888 4796 cmd.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\~MHz EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 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 4796 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 14 IoCs
pid Process 4796 EXCEL.EXE 4796 EXCEL.EXE 4796 EXCEL.EXE 4796 EXCEL.EXE 4796 EXCEL.EXE 4796 EXCEL.EXE 4796 EXCEL.EXE 4796 EXCEL.EXE 4796 EXCEL.EXE 4796 EXCEL.EXE 4796 EXCEL.EXE 4796 EXCEL.EXE 4796 EXCEL.EXE 4796 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 4796 wrote to memory of 3744 4796 EXCEL.EXE 84 PID 4796 wrote to memory of 3744 4796 EXCEL.EXE 84 PID 4796 wrote to memory of 3956 4796 EXCEL.EXE 86 PID 4796 wrote to memory of 3956 4796 EXCEL.EXE 86 PID 4796 wrote to memory of 1888 4796 EXCEL.EXE 87 PID 4796 wrote to memory of 1888 4796 EXCEL.EXE 87 PID 3744 wrote to memory of 1908 3744 cmd.exe 90 PID 3744 wrote to memory of 1908 3744 cmd.exe 90 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 1908 attrib.exe
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\26d2b3a92fda89574c74d396d85dec67.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4796 -
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:3744 -
C:\Windows\system32\attrib.exeattrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"3⤵
- Views/modifies file attributes
PID:1908
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c Del /F /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"2⤵
- Process spawned unexpected child process
PID:3956
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c RD /S /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"2⤵
- Process spawned unexpected child process
PID:1888
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