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
Behavioral task
behavioral2
Sample
document-1955896638.xls
Resource
win10v20201028
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
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.
Processes:
rundll32.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 1496 1276 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 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
Processes:
EXCEL.EXEdescription 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
Processes:
EXCEL.EXEpid process 1276 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
EXCEL.EXEpid process 1276 EXCEL.EXE 1276 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid 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
Processes:
EXCEL.EXEdescription pid process target process PID 1276 wrote to memory of 1496 1276 EXCEL.EXE rundll32.exe PID 1276 wrote to memory of 1496 1276 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\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
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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memory/1276-2-0x00007FFC444D0000-0x00007FFC444E0000-memory.dmpFilesize
64KB
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memory/1276-3-0x00007FFC444D0000-0x00007FFC444E0000-memory.dmpFilesize
64KB
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memory/1276-4-0x00007FFC444D0000-0x00007FFC444E0000-memory.dmpFilesize
64KB
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memory/1276-5-0x00007FFC681C0000-0x00007FFC687F7000-memory.dmpFilesize
6.2MB
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memory/1276-6-0x00007FFC444D0000-0x00007FFC444E0000-memory.dmpFilesize
64KB
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memory/1496-7-0x0000000000000000-mapping.dmp