Analysis
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max time kernel
141s -
max time network
147s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
15-03-2021 08:04
Behavioral task
behavioral1
Sample
general_2589.xlsb
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
general_2589.xlsb
Resource
win10v20201028
windows10_x64
0 signatures
0 seconds
General
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Target
general_2589.xlsb
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Size
65KB
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MD5
0f643d82af7f4daccccfb24cdf3f63f2
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SHA1
e34f37bc019d659a10e942c27b601be5fbe7d313
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SHA256
6c1fdee9b69b6eb4e1c8a3f3defd32f346aea9d464ad51c1aca45d1359fa6e62
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SHA512
68f36c53190c245ded65b7fc849e998c419896eaf1eb3aa16b4e9b023ece671bad59e3cf03fda745f9a26d170bd9d1d171a7d7877d79a5e6fceaf2b7d9755a67
Score
10/10
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 896 1456 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\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 1456 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 1456 EXCEL.EXE 1456 EXCEL.EXE 1456 EXCEL.EXE 1456 EXCEL.EXE 1456 EXCEL.EXE 1456 EXCEL.EXE 1456 EXCEL.EXE 1456 EXCEL.EXE 1456 EXCEL.EXE 1456 EXCEL.EXE 1456 EXCEL.EXE 1456 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 1456 wrote to memory of 896 1456 EXCEL.EXE rundll32.exe PID 1456 wrote to memory of 896 1456 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\general_2589.xlsb"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\wCmfmRe\dtxzrRg\GZUJoxy.dll,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/896-7-0x0000000000000000-mapping.dmp
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memory/1456-2-0x00007FFB33400000-0x00007FFB33410000-memory.dmpFilesize
64KB
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memory/1456-3-0x00007FFB33400000-0x00007FFB33410000-memory.dmpFilesize
64KB
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memory/1456-4-0x00007FFB33400000-0x00007FFB33410000-memory.dmpFilesize
64KB
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memory/1456-5-0x00007FFB33400000-0x00007FFB33410000-memory.dmpFilesize
64KB
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memory/1456-6-0x00007FFB59020000-0x00007FFB59657000-memory.dmpFilesize
6.2MB