Analysis
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max time kernel
139s -
max time network
140s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
12-03-2021 20:56
Behavioral task
behavioral1
Sample
document-1812162758.xls
Resource
win7v20201028
Behavioral task
behavioral2
Sample
document-1812162758.xls
Resource
win10v20201028
General
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Target
document-1812162758.xls
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Size
138KB
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MD5
f5ee428d9e8a0775a2589b5d9e8bbd76
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SHA1
7f19c82ca70376110ae74dcd3c65f1ce204b6a6f
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SHA256
ef760ceabfd9410e28de9ca1c038f95907407d15fe401f032875c621e715b9a4
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SHA512
620cec5f752b190a48e3f90869aab844c9e514c9f1004fb613500320a7917eb711e7a13c1fe89e7268cd83be4628b03d8e5c3746093d903acae36abbb32272d6
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 1340 3116 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 3116 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 3116 EXCEL.EXE 3116 EXCEL.EXE 3116 EXCEL.EXE 3116 EXCEL.EXE 3116 EXCEL.EXE 3116 EXCEL.EXE 3116 EXCEL.EXE 3116 EXCEL.EXE 3116 EXCEL.EXE 3116 EXCEL.EXE 3116 EXCEL.EXE 3116 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 3116 wrote to memory of 1340 3116 EXCEL.EXE rundll32.exe PID 3116 wrote to memory of 1340 3116 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-1812162758.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3116 -
C:\Windows\SYSTEM32\rundll32.exerundll32 ..\zfbfg.ere,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:1340
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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memory/1340-7-0x0000000000000000-mapping.dmp
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memory/3116-2-0x00007FF7FC7D0000-0x00007FF7FC7E0000-memory.dmpFilesize
64KB
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memory/3116-3-0x00007FF7FC7D0000-0x00007FF7FC7E0000-memory.dmpFilesize
64KB
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memory/3116-4-0x00007FF7FC7D0000-0x00007FF7FC7E0000-memory.dmpFilesize
64KB
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memory/3116-5-0x00007FF7FC7D0000-0x00007FF7FC7E0000-memory.dmpFilesize
64KB
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memory/3116-6-0x00007FF81F9E0000-0x00007FF820017000-memory.dmpFilesize
6.2MB