Analysis
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max time kernel
145s -
max time network
137s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
13-05-2021 12:59
Static task
static1
Behavioral task
behavioral1
Sample
catalog-295819331.xls
Resource
win7v20210408
Behavioral task
behavioral2
Sample
catalog-295819331.xls
Resource
win10v20210410
General
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Target
catalog-295819331.xls
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Size
367KB
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MD5
80a1976552ba348d725db1c3c3ff5a14
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SHA1
27963b4571a46f1cbd4dc9af90681d16d77e4ef8
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SHA256
4cb5af26782cfc92d9b813c409352532e5149a3c2b80bdeac5ac1228da568522
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SHA512
30545af59e4b8e9ee70fe398751b3d6333b50d9cf7745cb5662617c5588ccea29717f8ad1aa59b5e8f355417471a7324bd5e31fbf66388cc7447fc3ac9d33c7d
Malware Config
Signatures
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Process spawned unexpected child process 2 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
rundll32.exerundll32.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2164 3560 rundll32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3856 3560 rundll32.exe EXCEL.EXE -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
EXCEL.EXEdescription 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
Processes:
EXCEL.EXEdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 3560 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 14 IoCs
Processes:
EXCEL.EXEpid process 3560 EXCEL.EXE 3560 EXCEL.EXE 3560 EXCEL.EXE 3560 EXCEL.EXE 3560 EXCEL.EXE 3560 EXCEL.EXE 3560 EXCEL.EXE 3560 EXCEL.EXE 3560 EXCEL.EXE 3560 EXCEL.EXE 3560 EXCEL.EXE 3560 EXCEL.EXE 3560 EXCEL.EXE 3560 EXCEL.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 3560 wrote to memory of 2164 3560 EXCEL.EXE rundll32.exe PID 3560 wrote to memory of 2164 3560 EXCEL.EXE rundll32.exe PID 3560 wrote to memory of 3856 3560 EXCEL.EXE rundll32.exe PID 3560 wrote to memory of 3856 3560 EXCEL.EXE rundll32.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\catalog-295819331.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3560 -
C:\Windows\SYSTEM32\rundll32.exerundll32 ..\tuti.rut,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:2164
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C:\Windows\SYSTEM32\rundll32.exerundll32 ..\tuti.rut1,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:3856
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