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Analysis
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max time kernel
101s -
max time network
137s -
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, 17:28
Behavioral task
behavioral1
Sample
ca9141d70ac492e6adb61f3c7e14ed59.xls
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
ca9141d70ac492e6adb61f3c7e14ed59.xls
Resource
win10v2004-20220812-en
General
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Target
ca9141d70ac492e6adb61f3c7e14ed59.xls
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Size
289KB
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MD5
ca9141d70ac492e6adb61f3c7e14ed59
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SHA1
56ebf9533953af1c34f3bc89b527c78fecb1cbce
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SHA256
b6a2a4a911c808f75204b6fbf55a0fc4c6408b0240d3f59e8e5933b186a1d68f
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SHA512
73ad90fc3017ff4424e8b805655ba31976e174dd815786ccc5230d359b5c33af0c025692a285f5150031a0d8d04df143e61a1f3783369738f82643784be43834
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SSDEEP
3072:LP99KZ26S+xPffpSRRRDLuTUXnPjAYmOEHEGjq4yW9WDecBGPfeZh1HHebx8kAP7:D9YZ26S+PW5EwNMY68h8CO3
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 1540 4056 cmd.exe 79 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4332 4056 cmd.exe 79 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4232 4056 cmd.exe 79 -
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\23965E00\:Zone.Identifier:$DATA EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4056 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 4056 EXCEL.EXE 4056 EXCEL.EXE 4056 EXCEL.EXE 4056 EXCEL.EXE 4056 EXCEL.EXE 4056 EXCEL.EXE 4056 EXCEL.EXE 4056 EXCEL.EXE 4056 EXCEL.EXE 4056 EXCEL.EXE 4056 EXCEL.EXE 4056 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 4056 wrote to memory of 1540 4056 EXCEL.EXE 82 PID 4056 wrote to memory of 1540 4056 EXCEL.EXE 82 PID 4056 wrote to memory of 4232 4056 EXCEL.EXE 87 PID 4056 wrote to memory of 4232 4056 EXCEL.EXE 87 PID 4056 wrote to memory of 4332 4056 EXCEL.EXE 85 PID 4056 wrote to memory of 4332 4056 EXCEL.EXE 85 PID 1540 wrote to memory of 2336 1540 cmd.exe 88 PID 1540 wrote to memory of 2336 1540 cmd.exe 88 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 2336 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\ca9141d70ac492e6adb61f3c7e14ed59.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4056 -
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:1540 -
C:\Windows\system32\attrib.exeattrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"3⤵
- Views/modifies file attributes
PID:2336
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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:4332
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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:4232
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