Analysis
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max time kernel
90s -
max time network
89s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
24-02-2021 19:34
Behavioral task
behavioral1
Sample
document-1444787431.xls
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
document-1444787431.xls
Resource
win10v20201028
windows10_x64
0 signatures
0 seconds
General
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Target
document-1444787431.xls
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Size
90KB
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MD5
3561877f0685930b467f49e00e1f5265
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SHA1
d70ac9e9f8d3d7f71886e5204468e431ebff4538
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SHA256
96cf591ab3eb5ca14724c2ed5084a21ef64608d1f54a866f7fad15d013306213
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SHA512
176914efb16b793293325042a456b72e3f53fbaf4dae140b3cfc34523bfd3e35467ce44681cc5d48da6b99071a0857a3f8c41191b54e24d03b7a277390242a19
Score
10/10
Malware Config
Extracted
Language
xlm4.0
Source
URLs
xlm40.dropper
http://37.10.71.99/22.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 564 1152 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 (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 (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 (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\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 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 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 -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1152 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
EXCEL.EXEpid process 1152 EXCEL.EXE 1152 EXCEL.EXE 1152 EXCEL.EXE -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 1152 wrote to memory of 564 1152 EXCEL.EXE rundll32.exe PID 1152 wrote to memory of 564 1152 EXCEL.EXE rundll32.exe PID 1152 wrote to memory of 564 1152 EXCEL.EXE rundll32.exe PID 1152 wrote to memory of 564 1152 EXCEL.EXE rundll32.exe PID 1152 wrote to memory of 564 1152 EXCEL.EXE rundll32.exe PID 1152 wrote to memory of 564 1152 EXCEL.EXE rundll32.exe PID 1152 wrote to memory of 564 1152 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-1444787431.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/564-6-0x0000000000000000-mapping.dmp
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memory/564-7-0x00000000760C1000-0x00000000760C3000-memory.dmpFilesize
8KB
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memory/1152-2-0x000000002F471000-0x000000002F474000-memory.dmpFilesize
12KB
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memory/1152-3-0x0000000071191000-0x0000000071193000-memory.dmpFilesize
8KB
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memory/1152-4-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
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memory/2008-5-0x000007FEF72E0000-0x000007FEF755A000-memory.dmpFilesize
2.5MB