Analysis
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max time kernel
137s -
max time network
133s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
15-03-2021 06:37
Behavioral task
behavioral1
Sample
general_1632.xlsb
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
general_1632.xlsb
Resource
win10v20201028
windows10_x64
0 signatures
0 seconds
General
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Target
general_1632.xlsb
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Size
82KB
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MD5
f235e2d66307244100d0f14430c3e501
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SHA1
f513b73dac3f4f08b0016973cca05d34e0e3883e
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SHA256
60ca78fbf084dd3df00eabb0409ab3e9967c2e7d869f0ba6d3fc5cb1f55ab865
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SHA512
1937f278e2c7c4dd56ce00f1651bbb3279d56b029fdd1a6c40e5e6acbbd702291bc713235afe7b8b8acaa7ff71e4295d0f62747af10190649f5ae255fd1fcfb8
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 500 1212 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 1212 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 1212 EXCEL.EXE 1212 EXCEL.EXE 1212 EXCEL.EXE 1212 EXCEL.EXE 1212 EXCEL.EXE 1212 EXCEL.EXE 1212 EXCEL.EXE 1212 EXCEL.EXE 1212 EXCEL.EXE 1212 EXCEL.EXE 1212 EXCEL.EXE 1212 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 1212 wrote to memory of 500 1212 EXCEL.EXE rundll32.exe PID 1212 wrote to memory of 500 1212 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_1632.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/500-7-0x0000000000000000-mapping.dmp
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memory/1212-2-0x00007FFC22770000-0x00007FFC22780000-memory.dmpFilesize
64KB
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memory/1212-3-0x00007FFC22770000-0x00007FFC22780000-memory.dmpFilesize
64KB
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memory/1212-4-0x00007FFC22770000-0x00007FFC22780000-memory.dmpFilesize
64KB
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memory/1212-5-0x00007FFC22770000-0x00007FFC22780000-memory.dmpFilesize
64KB
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memory/1212-6-0x00007FFC48550000-0x00007FFC48B87000-memory.dmpFilesize
6.2MB