Analysis
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max time kernel
69s -
max time network
33s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
08-04-2021 06:31
Behavioral task
behavioral1
Sample
document-550193913.xls
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
document-550193913.xls
Resource
win10v20201028
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 (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process 572 2008 rundll32.exe EXCEL.EXE -
Enumerates system info in registry 2 TTPs 1 IoCs
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE -
Processes:
EXCEL.EXEdescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 2008 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
EXCEL.EXEpid process 2008 EXCEL.EXE 2008 EXCEL.EXE 2008 EXCEL.EXE -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 2008 wrote to memory of 572 2008 EXCEL.EXE rundll32.exe PID 2008 wrote to memory of 572 2008 EXCEL.EXE rundll32.exe PID 2008 wrote to memory of 572 2008 EXCEL.EXE rundll32.exe PID 2008 wrote to memory of 572 2008 EXCEL.EXE rundll32.exe PID 2008 wrote to memory of 572 2008 EXCEL.EXE rundll32.exe PID 2008 wrote to memory of 572 2008 EXCEL.EXE rundll32.exe PID 2008 wrote to memory of 572 2008 EXCEL.EXE rundll32.exe
Processes
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C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\document-550193913.xls1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32 ..\rieuro.vnt,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/572-6-0x0000000000000000-mapping.dmp
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memory/572-7-0x0000000076641000-0x0000000076643000-memory.dmpFilesize
8KB
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memory/1972-5-0x000007FEF7B20000-0x000007FEF7D9A000-memory.dmpFilesize
2.5MB
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memory/2008-2-0x000000002FAC1000-0x000000002FAC4000-memory.dmpFilesize
12KB
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memory/2008-3-0x00000000719D1000-0x00000000719D3000-memory.dmpFilesize
8KB
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memory/2008-4-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB