Analysis
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max time kernel
136s -
max time network
130s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
24-02-2021 19:33
Behavioral task
behavioral1
Sample
document-1549008713.xls
Resource
win7v20201028
Behavioral task
behavioral2
Sample
document-1549008713.xls
Resource
win10v20201028
General
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Target
document-1549008713.xls
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Size
90KB
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MD5
ff1cb95e9037762f726f9485db9eff12
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SHA1
cfe3fdca0bc87f49788f75d872a56ed1842a02c5
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SHA256
d64cc2ecc4cff3b0cd2d55dac173f57cb2dafd2e36e850c73b2c125197aca954
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SHA512
b10677b6016699ce43f800c92360efc916649166cf0668f740abddf8b1c3e05bc29d53ae4dca2ffc40e9f977ff33b8a65e012c12b4383850647798176b9140ee
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 4076 4772 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 value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 4772 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
EXCEL.EXEpid process 4772 EXCEL.EXE 4772 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 4772 EXCEL.EXE 4772 EXCEL.EXE 4772 EXCEL.EXE 4772 EXCEL.EXE 4772 EXCEL.EXE 4772 EXCEL.EXE 4772 EXCEL.EXE 4772 EXCEL.EXE 4772 EXCEL.EXE 4772 EXCEL.EXE 4772 EXCEL.EXE 4772 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 4772 wrote to memory of 4076 4772 EXCEL.EXE rundll32.exe PID 4772 wrote to memory of 4076 4772 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-1549008713.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
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C:\Windows\SYSTEM32\rundll32.exerundll32 ..\rieuro.vnt,DllRegisterServer2⤵
- Process spawned unexpected child process
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/4076-7-0x0000000000000000-mapping.dmp
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memory/4772-2-0x00007FFF21F30000-0x00007FFF21F40000-memory.dmpFilesize
64KB
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memory/4772-3-0x00007FFF21F30000-0x00007FFF21F40000-memory.dmpFilesize
64KB
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memory/4772-4-0x00007FFF21F30000-0x00007FFF21F40000-memory.dmpFilesize
64KB
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memory/4772-5-0x00007FFF45E00000-0x00007FFF46437000-memory.dmpFilesize
6.2MB
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memory/4772-6-0x00007FFF21F30000-0x00007FFF21F40000-memory.dmpFilesize
64KB