Analysis
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max time kernel
136s -
max time network
126s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
08-03-2021 17:52
Behavioral task
behavioral1
Sample
obligations (88)[3478].xls
Resource
win7v20201028
Behavioral task
behavioral2
Sample
obligations (88)[3478].xls
Resource
win10v20201028
General
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Target
obligations (88)[3478].xls
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Size
317KB
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MD5
78bdd8ac2ff1478b2bf628d4e5dcde9c
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SHA1
745d763b1cd4b0bda8dafaeb9fc53d3db237c5ac
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SHA256
5e3f0cb52eb4774aac49f3d250347dd99f5535fb6241ab33127c1534f59799d2
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SHA512
eaa82b328f4e90a346d1f23e81ec13d83779b663afe863556b9126dfa9e7a0d19208e71bf2d03b5335cb24366fde273430d511df1415bbd1e833f9a15e56c1cd
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 416 1144 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 1144 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
EXCEL.EXEpid process 1144 EXCEL.EXE 1144 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 15 IoCs
Processes:
EXCEL.EXEpid process 1144 EXCEL.EXE 1144 EXCEL.EXE 1144 EXCEL.EXE 1144 EXCEL.EXE 1144 EXCEL.EXE 1144 EXCEL.EXE 1144 EXCEL.EXE 1144 EXCEL.EXE 1144 EXCEL.EXE 1144 EXCEL.EXE 1144 EXCEL.EXE 1144 EXCEL.EXE 1144 EXCEL.EXE 1144 EXCEL.EXE 1144 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 1144 wrote to memory of 416 1144 EXCEL.EXE rundll32.exe PID 1144 wrote to memory of 416 1144 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\obligations (88)[3478].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
PID:1144 -
C:\Windows\SYSTEM32\rundll32.exerundll32 ..\zdfb.zgz,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:416
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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memory/416-7-0x0000000000000000-mapping.dmp
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memory/1144-2-0x00007FFDFD230000-0x00007FFDFD240000-memory.dmpFilesize
64KB
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memory/1144-3-0x00007FFDFD230000-0x00007FFDFD240000-memory.dmpFilesize
64KB
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memory/1144-4-0x00007FFDFD230000-0x00007FFDFD240000-memory.dmpFilesize
64KB
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memory/1144-5-0x00007FFE20AF0000-0x00007FFE21127000-memory.dmpFilesize
6.2MB
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memory/1144-6-0x00007FFDFD230000-0x00007FFDFD240000-memory.dmpFilesize
64KB