Analysis
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max time kernel
136s -
max time network
129s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
12-03-2021 19:53
Behavioral task
behavioral1
Sample
document-1775529683.xls
Resource
win7v20201028
Behavioral task
behavioral2
Sample
document-1775529683.xls
Resource
win10v20201028
General
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Target
document-1775529683.xls
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Size
138KB
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MD5
d90e1e2487d95b60d6a00af6bf809d1c
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SHA1
e805ab11c60f76f1497f04897a76f69d678bcc0c
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SHA256
8682fa4786c1c04d5fdd0b33ed9552457a1225badd60301fd649262f0daa7b7a
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SHA512
acf2a7c8fa163775886cffb148fae770c3f6e2e7adff980bb14c481950996e0d2097b90bfa7203111f7254cdec65080617128b874b6cd797f41d62f7c568429c
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 1204 1276 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 1276 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
EXCEL.EXEpid process 1276 EXCEL.EXE 1276 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 1276 EXCEL.EXE 1276 EXCEL.EXE 1276 EXCEL.EXE 1276 EXCEL.EXE 1276 EXCEL.EXE 1276 EXCEL.EXE 1276 EXCEL.EXE 1276 EXCEL.EXE 1276 EXCEL.EXE 1276 EXCEL.EXE 1276 EXCEL.EXE 1276 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 1276 wrote to memory of 1204 1276 EXCEL.EXE rundll32.exe PID 1276 wrote to memory of 1204 1276 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-1775529683.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:1276 -
C:\Windows\SYSTEM32\rundll32.exerundll32 ..\zfbfg.ere,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:1204
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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memory/1204-7-0x0000000000000000-mapping.dmp
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memory/1276-2-0x00007FFC444D0000-0x00007FFC444E0000-memory.dmpFilesize
64KB
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memory/1276-3-0x00007FFC444D0000-0x00007FFC444E0000-memory.dmpFilesize
64KB
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memory/1276-4-0x00007FFC444D0000-0x00007FFC444E0000-memory.dmpFilesize
64KB
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memory/1276-5-0x00007FFC68930000-0x00007FFC68F67000-memory.dmpFilesize
6.2MB
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memory/1276-6-0x00007FFC444D0000-0x00007FFC444E0000-memory.dmpFilesize
64KB