Analysis
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max time kernel
541s -
max time network
519s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
01-07-2021 09:56
Behavioral task
behavioral1
Sample
document-550193913.xls
Resource
win10v20210410
windows10_x64
0 signatures
0 seconds
General
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Target
document-550193913.xls
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Size
91KB
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MD5
4107cd071635b4cc3689f77c688f57c3
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SHA1
cf6dea64431b614757906f32d3d1f016b5afdbb5
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SHA256
d49b40d468269f57fb87ea6ad7fd8bb303fbeb033dbd45fb4967c34c5dfbc2ed
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SHA512
ae568d93ef0c9cea430e18bdf5a27cb5e71fe2e13cfca9c508f196aead42d7a1e68dd863587a0549391b7c08af85de9e6db574c9d819422482ed6529df52c0fb
Score
10/10
Malware Config
Extracted
Language
xlm4.0
Source
URLs
xlm40.dropper
https://helendunnosteopathy.co.uk/ds/2202.gif
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 1924 3212 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 3212 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
EXCEL.EXEpid process 3212 EXCEL.EXE 3212 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 15 IoCs
Processes:
EXCEL.EXEpid process 3212 EXCEL.EXE 3212 EXCEL.EXE 3212 EXCEL.EXE 3212 EXCEL.EXE 3212 EXCEL.EXE 3212 EXCEL.EXE 3212 EXCEL.EXE 3212 EXCEL.EXE 3212 EXCEL.EXE 3212 EXCEL.EXE 3212 EXCEL.EXE 3212 EXCEL.EXE 3212 EXCEL.EXE 3212 EXCEL.EXE 3212 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 3212 wrote to memory of 1924 3212 EXCEL.EXE rundll32.exe PID 3212 wrote to memory of 1924 3212 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-550193913.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:3212 -
C:\Windows\SYSTEM32\rundll32.exerundll32 ..\rieuro.vnt,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:1924
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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memory/1924-179-0x0000000000000000-mapping.dmp
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memory/3212-114-0x00007FF668F00000-0x00007FF66C4B6000-memory.dmpFilesize
53.7MB
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memory/3212-115-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmpFilesize
64KB
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memory/3212-116-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmpFilesize
64KB
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memory/3212-117-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmpFilesize
64KB
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memory/3212-118-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmpFilesize
64KB
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memory/3212-119-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmpFilesize
64KB
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memory/3212-122-0x00007FF858F10000-0x00007FF859FFE000-memory.dmpFilesize
16.9MB
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memory/3212-123-0x00000164968D0000-0x00000164987C5000-memory.dmpFilesize
31.0MB