Analysis
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max time kernel
139s -
max time network
139s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
13-03-2021 19:44
Behavioral task
behavioral1
Sample
document-1467203121.xls
Resource
win7v20201028
Behavioral task
behavioral2
Sample
document-1467203121.xls
Resource
win10v20201028
General
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Target
document-1467203121.xls
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Size
138KB
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MD5
9c2ddb1d8786b31a33b6b29819001dc2
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SHA1
1e31002ae8fef5ce967bb0f8bf2df2549b82a9ac
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SHA256
6557493aa9a9cd2a19145a179e877b50f1c47e9d0f2280cac686260299d43da0
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SHA512
767233213fc73a35ec7f28e2ad4df0dace94c876d1dbf068309c3b7b2ee90cd24c81009f127735dbe9310c0d3d3d2639da6f1e0afd342e560eabfc0b53e967e9
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 3096 3996 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 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 3996 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 3996 EXCEL.EXE 3996 EXCEL.EXE 3996 EXCEL.EXE 3996 EXCEL.EXE 3996 EXCEL.EXE 3996 EXCEL.EXE 3996 EXCEL.EXE 3996 EXCEL.EXE 3996 EXCEL.EXE 3996 EXCEL.EXE 3996 EXCEL.EXE 3996 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 3996 wrote to memory of 3096 3996 EXCEL.EXE rundll32.exe PID 3996 wrote to memory of 3096 3996 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-1467203121.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3996 -
C:\Windows\SYSTEM32\rundll32.exerundll32 ..\zfbfg.ere,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:3096
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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memory/3096-7-0x0000000000000000-mapping.dmp
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memory/3996-2-0x00007FFC108D0000-0x00007FFC108E0000-memory.dmpFilesize
64KB
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memory/3996-3-0x00007FFC108D0000-0x00007FFC108E0000-memory.dmpFilesize
64KB
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memory/3996-4-0x00007FFC108D0000-0x00007FFC108E0000-memory.dmpFilesize
64KB
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memory/3996-6-0x00007FFC108D0000-0x00007FFC108E0000-memory.dmpFilesize
64KB
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memory/3996-5-0x00007FFC33A00000-0x00007FFC34037000-memory.dmpFilesize
6.2MB