Analysis
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max time kernel
69s -
max time network
39s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
24-02-2021 19:34
Behavioral task
behavioral1
Sample
document-706788186.xls
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
document-706788186.xls
Resource
win10v20201028
windows10_x64
0 signatures
0 seconds
General
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Target
document-706788186.xls
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Size
90KB
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MD5
e21fa247ae9af58927aedaf5dfd63478
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SHA1
7f83938a868a71c0430978963e7edb94521895cc
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SHA256
9c4d4c6009c4c6659443d3cee334bfa45d584a7494e1d473139d118fe757c998
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SHA512
17d5dcbd0c7a4c2f3ad581d8a705bd1038dcf3eed9ce80cffb5a04b330236c572d776f504eacf1d053bcf16fdaed95f17227b57df15321d0befa57339d49cf09
Score
10/10
Malware Config
Extracted
Language
xlm4.0
Source
URLs
xlm40.dropper
http://185.212.47.84/22.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 888 1908 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 Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar 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 (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 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 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 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 (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 (int) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1908 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
EXCEL.EXEpid process 1908 EXCEL.EXE 1908 EXCEL.EXE 1908 EXCEL.EXE -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 1908 wrote to memory of 888 1908 EXCEL.EXE rundll32.exe PID 1908 wrote to memory of 888 1908 EXCEL.EXE rundll32.exe PID 1908 wrote to memory of 888 1908 EXCEL.EXE rundll32.exe PID 1908 wrote to memory of 888 1908 EXCEL.EXE rundll32.exe PID 1908 wrote to memory of 888 1908 EXCEL.EXE rundll32.exe PID 1908 wrote to memory of 888 1908 EXCEL.EXE rundll32.exe PID 1908 wrote to memory of 888 1908 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-706788186.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/888-6-0x0000000000000000-mapping.dmp
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memory/888-7-0x0000000075781000-0x0000000075783000-memory.dmpFilesize
8KB
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memory/1752-5-0x000007FEF7430000-0x000007FEF76AA000-memory.dmpFilesize
2.5MB
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memory/1908-2-0x000000002F731000-0x000000002F734000-memory.dmpFilesize
12KB
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memory/1908-3-0x0000000071271000-0x0000000071273000-memory.dmpFilesize
8KB
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memory/1908-4-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB