Analysis
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max time kernel
70s -
max time network
129s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
02-03-2021 22:23
Behavioral task
behavioral1
Sample
document-1955896638.xls
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
document-1955896638.xls
Resource
win10v20201028
windows10_x64
0 signatures
0 seconds
General
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Target
document-1955896638.xls
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Size
85KB
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MD5
66e5e724f99a77455e36bca858366e5b
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SHA1
aad43897bccde3be594cf89863341050b6eed55a
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SHA256
16a0c2f741a14c423b7abe293e26f711fdb984fc52064982d874bf310c520b12
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SHA512
e96dd67971cd9e55d37278e65f59060a1f708dc2d841d6aae02bc5440a3c99dc5fcfbebc98b68fea928b4df52ca59679d03af1dca06c553a2fe68a884b056571
Score
10/10
Malware Config
Signatures
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Process spawned unexpected child process 1 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 1496 1276 rundll32.exe 68 -
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\ProcessorNameString EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz 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 1276 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 1276 EXCEL.EXE 1276 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 1276 EXCEL.EXE 1276 EXCEL.EXE 1276 EXCEL.EXE 1276 EXCEL.EXE 1276 EXCEL.EXE 1276 EXCEL.EXE 1276 EXCEL.EXE 1276 EXCEL.EXE 1276 EXCEL.EXE 1276 EXCEL.EXE 1276 EXCEL.EXE 1276 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 1276 wrote to memory of 1496 1276 EXCEL.EXE 76 PID 1276 wrote to memory of 1496 1276 EXCEL.EXE 76
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\document-1955896638.xls"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:1276 -
C:\Windows\SYSTEM32\rundll32.exerundll32 ..\IEUDLK.CJF,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:1496
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