Analysis
- max time kernel
136s - max time network
132s - platform
windows10_x64 - resource
win10v20201028 - submitted
29/03/2021, 15:51
Static task
static1
Behavioral task
behavioral1
Sample
Claim172979626403292021.xlsm
Resource
win7v20201028
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
Claim172979626403292021.xlsm
Resource
win10v20201028
0 signatures
0 seconds
General
- Target Claim172979626403292021.xlsm
- Size 173KB
- Sample210329-e2szf1l8qj
- SHA256 0509c2db06fdbae73497f92f5941c7c391f78fbec4b9dca79fbb57eab6df188e
- MD5 e9ccb698f40782b140028d589addcdec
- SHA1 697d34a74ac5da154426b6ee0fbed43cd37bedd0
- SHA512 eed27ffacc9604b8de081564ca6827fff64f27c60124afd44c1e9fc831f0ff69759756551e11923421808f937c0ba19c47a6bb7886cd9fcec3990ddd8fc154d1
- MD5 SHA1 SHA512
Score
10/10
Malware Config
Signatures
- 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 3724 4012 rundll32.exe 67 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2128 4012 rundll32.exe 67 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2400 4012 rundll32.exe 67 - 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 4012 EXCEL.EXE - Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 4012 EXCEL.EXE 4012 EXCEL.EXE - Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 4012 EXCEL.EXE 4012 EXCEL.EXE 4012 EXCEL.EXE 4012 EXCEL.EXE 4012 EXCEL.EXE 4012 EXCEL.EXE 4012 EXCEL.EXE 4012 EXCEL.EXE 4012 EXCEL.EXE 4012 EXCEL.EXE 4012 EXCEL.EXE 4012 EXCEL.EXE - Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4012 wrote to memory of 3724 4012 EXCEL.EXE 81 PID 4012 wrote to memory of 3724 4012 EXCEL.EXE 81 PID 4012 wrote to memory of 2128 4012 EXCEL.EXE 82 PID 4012 wrote to memory of 2128 4012 EXCEL.EXE 82 PID 4012 wrote to memory of 2400 4012 EXCEL.EXE 83 PID 4012 wrote to memory of 2400 4012 EXCEL.EXE 83
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\Claim172979626403292021.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:4012 -
C:\Windows\SYSTEM32\rundll32.exerundll32 ..\Hodas.vyur,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:3724
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C:\Windows\SYSTEM32\rundll32.exerundll32 ..\Hodas.vyur1,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:2128
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C:\Windows\SYSTEM32\rundll32.exerundll32 ..\Hodas.vyur2,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:2400
-