Analysis
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max time kernel
128s -
max time network
56s -
platform
windows7_x64 -
resource
win7v20210410 -
submitted
27-07-2021 14:10
Behavioral task
behavioral1
Sample
analysis-1808712384.xlsb
Resource
win7v20210410
Behavioral task
behavioral2
Sample
analysis-1808712384.xlsb
Resource
win10v20210408
General
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Target
analysis-1808712384.xlsb
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Size
142KB
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MD5
e9d54291f481858ce92cfa7542db7e15
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SHA1
19685ad8b987846231c1615aa2f90d74ecb1f7f4
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SHA256
8d076c43b33231edb93313f5a0e311492b4c2d51888d6a6b6a42ad535f1be2d6
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SHA512
559917816900aedbc9973daa529975d19db2558d74ab30102aeecf23ece4efa0263f49fdaf5f9460d0baadc38f11c5a3c8eeb1af0570e2a85be97df32e505179
Malware Config
Extracted
https://phacdochuabenh.com/jJTYkIFPp6x/yy.html
https://mobilesmsmarketing.online/1knoj4Bd3F0/yy.html
Signatures
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Process spawned unexpected child process 2 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
regsvr32.exeregsvr32.exedescription pid pid_target process target process Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process 1912 1728 regsvr32.exe EXCEL.EXE Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process 1704 1728 regsvr32.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-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\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-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\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-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1728 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 5 IoCs
Processes:
EXCEL.EXEpid process 1728 EXCEL.EXE 1728 EXCEL.EXE 1728 EXCEL.EXE 1728 EXCEL.EXE 1728 EXCEL.EXE -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 1728 wrote to memory of 1912 1728 EXCEL.EXE regsvr32.exe PID 1728 wrote to memory of 1912 1728 EXCEL.EXE regsvr32.exe PID 1728 wrote to memory of 1912 1728 EXCEL.EXE regsvr32.exe PID 1728 wrote to memory of 1912 1728 EXCEL.EXE regsvr32.exe PID 1728 wrote to memory of 1912 1728 EXCEL.EXE regsvr32.exe PID 1728 wrote to memory of 1912 1728 EXCEL.EXE regsvr32.exe PID 1728 wrote to memory of 1912 1728 EXCEL.EXE regsvr32.exe PID 1728 wrote to memory of 1704 1728 EXCEL.EXE regsvr32.exe PID 1728 wrote to memory of 1704 1728 EXCEL.EXE regsvr32.exe PID 1728 wrote to memory of 1704 1728 EXCEL.EXE regsvr32.exe PID 1728 wrote to memory of 1704 1728 EXCEL.EXE regsvr32.exe PID 1728 wrote to memory of 1704 1728 EXCEL.EXE regsvr32.exe PID 1728 wrote to memory of 1704 1728 EXCEL.EXE regsvr32.exe PID 1728 wrote to memory of 1704 1728 EXCEL.EXE regsvr32.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\analysis-1808712384.xlsb1⤵
- 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\regsvr32.exeregsvr32 -s ..\vin.dll2⤵
- Process spawned unexpected child process
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C:\Windows\SysWOW64\regsvr32.exeregsvr32 -s ..\vun.dll2⤵
- 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/1704-64-0x0000000000000000-mapping.dmp
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memory/1728-59-0x000000002FC61000-0x000000002FC64000-memory.dmpFilesize
12KB
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memory/1728-60-0x0000000071581000-0x0000000071583000-memory.dmpFilesize
8KB
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memory/1728-61-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
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memory/1912-62-0x0000000000000000-mapping.dmp
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memory/1912-63-0x00000000753E1000-0x00000000753E3000-memory.dmpFilesize
8KB