Analysis
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max time kernel
69s -
max time network
70s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
20-02-2021 11:30
Behavioral task
behavioral1
Sample
document-871813132.xls
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
document-871813132.xls
Resource
win10v20201028
windows10_x64
0 signatures
0 seconds
General
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Target
document-871813132.xls
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Size
89KB
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MD5
b513cec51f27439d29fac0f50dddfc2e
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SHA1
f13417ee00c33d16b6cc23772710dafcddcbe7df
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SHA256
56c3b93db9d347f6ce801f8100d58561d60fa111ae394278471eb0713c799ef8
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SHA512
b258dcbfd69d264639d4bc8e06ce77d75f9f2ac256114ff49dc58225135779a9b0fc418d4bd5dc00ac1f6df57003dc46afd2093b5d1e3757bd42622981bbd10d
Score
10/10
Malware Config
Extracted
Language
xlm4.0
Source
URLs
xlm40.dropper
https://semanadaquebradeparadigmas.com.br/ds/1902.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 1368 1924 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 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 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\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 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 -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1924 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
EXCEL.EXEpid process 1924 EXCEL.EXE 1924 EXCEL.EXE 1924 EXCEL.EXE -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 1924 wrote to memory of 1368 1924 EXCEL.EXE rundll32.exe PID 1924 wrote to memory of 1368 1924 EXCEL.EXE rundll32.exe PID 1924 wrote to memory of 1368 1924 EXCEL.EXE rundll32.exe PID 1924 wrote to memory of 1368 1924 EXCEL.EXE rundll32.exe PID 1924 wrote to memory of 1368 1924 EXCEL.EXE rundll32.exe PID 1924 wrote to memory of 1368 1924 EXCEL.EXE rundll32.exe PID 1924 wrote to memory of 1368 1924 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-871813132.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 ..\iopjvdf.vock,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/1368-6-0x0000000000000000-mapping.dmp
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memory/1368-7-0x0000000075AE1000-0x0000000075AE3000-memory.dmpFilesize
8KB
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memory/1904-5-0x000007FEF6680000-0x000007FEF68FA000-memory.dmpFilesize
2.5MB
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memory/1924-2-0x000000002F231000-0x000000002F234000-memory.dmpFilesize
12KB
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memory/1924-3-0x0000000071821000-0x0000000071823000-memory.dmpFilesize
8KB
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memory/1924-4-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB