Analysis
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max time kernel
140s -
max time network
125s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
12-03-2021 19:49
Behavioral task
behavioral1
Sample
document-996222844.xls
Resource
win7v20201028
Behavioral task
behavioral2
Sample
document-996222844.xls
Resource
win10v20201028
General
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Target
document-996222844.xls
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Size
138KB
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MD5
e90d2a2f56259c727446606cebda3935
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SHA1
0bbe206461fe5b342e4dc64f9a5018d900d0467d
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SHA256
702819e475205cc650d688ef4ca3c7e8fed30e3db0d8435cf4ee502007facafa
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SHA512
cd4a4c66d22e4bd78e9d104509368cd3cb48c2638d53c1eb2e25262039352bf6c20e7dd1b8fd5272aed4cfc0b0a45ee668b2ec059878b66f92717819f4253121
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 1516 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 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 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 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 1516 3996 EXCEL.EXE rundll32.exe PID 3996 wrote to memory of 1516 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-996222844.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:1516
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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memory/1516-7-0x0000000000000000-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/3996-5-0x00007FFC108D0000-0x00007FFC108E0000-memory.dmpFilesize
64KB
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memory/3996-6-0x00007FFC339A0000-0x00007FFC33FD7000-memory.dmpFilesize
6.2MB