Analysis
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max time kernel
105s -
max time network
32s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
27-11-2022 19:58
Behavioral task
behavioral1
Sample
ɽи¼ùԱ.xls
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
ɽи¼ùԱ.xls
Resource
win10v2004-20221111-en
General
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Target
ɽи¼ùԱ.xls
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Size
87KB
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MD5
e8d103a9aedae5e4fa29c442c0688c44
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SHA1
c4ccc7fe49fc8597c5d07b00725ddc6d64d0246e
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SHA256
733646f77e4d6fa78aa78ba0df7cc16e5716ac549775acc3340c3b25de2e6b48
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SHA512
a9c543dc18de680ac7941621098e29014f5a5ab437f7981047998108f8e81edbf2bc285436ea2196502dc6d1c1e4dbfb94dc67b7e6c368d1d8735381a46c6356
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SSDEEP
1536:OoooEvG/awH0U1ic7U2jcc0lbxOvTgZgoMY7nJdJoOd7cJKXweb82:iGkQ7U2jcc0lbxOr4tAJKXwk82
Malware Config
Signatures
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Process spawned unexpected child process 3 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
cmd.execmd.execmd.exedescription pid pid_target process target process Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process 280 1952 cmd.exe EXCEL.EXE Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process 1316 1952 cmd.exe EXCEL.EXE Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process 1532 1952 cmd.exe EXCEL.EXE -
Deletes itself 1 IoCs
Processes:
EXCEL.EXEpid process 1952 EXCEL.EXE -
Office loads VBA resources, possible macro or embedded object present
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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-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\MenuExt EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\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-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\Toolbar EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105" EXCEL.EXE -
NTFS ADS 1 IoCs
Processes:
EXCEL.EXEdescription ioc process File created C:\Users\Admin\AppData\Local\Temp\15FD6000\:Zone.Identifier:$DATA EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1952 EXCEL.EXE -
Suspicious behavior: RenamesItself 1 IoCs
Processes:
EXCEL.EXEpid process 1952 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 5 IoCs
Processes:
EXCEL.EXEpid process 1952 EXCEL.EXE 1952 EXCEL.EXE 1952 EXCEL.EXE 1952 EXCEL.EXE 1952 EXCEL.EXE -
Suspicious use of WriteProcessMemory 16 IoCs
Processes:
EXCEL.EXEcmd.exedescription pid process target process PID 1952 wrote to memory of 280 1952 EXCEL.EXE cmd.exe PID 1952 wrote to memory of 280 1952 EXCEL.EXE cmd.exe PID 1952 wrote to memory of 280 1952 EXCEL.EXE cmd.exe PID 1952 wrote to memory of 280 1952 EXCEL.EXE cmd.exe PID 1952 wrote to memory of 1316 1952 EXCEL.EXE cmd.exe PID 1952 wrote to memory of 1316 1952 EXCEL.EXE cmd.exe PID 1952 wrote to memory of 1316 1952 EXCEL.EXE cmd.exe PID 1952 wrote to memory of 1316 1952 EXCEL.EXE cmd.exe PID 1952 wrote to memory of 1532 1952 EXCEL.EXE cmd.exe PID 1952 wrote to memory of 1532 1952 EXCEL.EXE cmd.exe PID 1952 wrote to memory of 1532 1952 EXCEL.EXE cmd.exe PID 1952 wrote to memory of 1532 1952 EXCEL.EXE cmd.exe PID 280 wrote to memory of 832 280 cmd.exe attrib.exe PID 280 wrote to memory of 832 280 cmd.exe attrib.exe PID 280 wrote to memory of 832 280 cmd.exe attrib.exe PID 280 wrote to memory of 832 280 cmd.exe attrib.exe -
Views/modifies file attributes 1 TTPs 1 IoCs
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\ɽи¼ùԱ.xls1⤵
- Deletes itself
- Enumerates system info in registry
- Modifies Internet Explorer settings
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\attrib.exeattrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"3⤵
- Views/modifies file attributes
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c Del /F /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"2⤵
- Process spawned unexpected child process
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c RD /S /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"2⤵
- 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/280-219-0x0000000000000000-mapping.dmp
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memory/832-222-0x0000000000000000-mapping.dmp
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memory/1316-220-0x0000000000000000-mapping.dmp
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memory/1532-221-0x0000000000000000-mapping.dmp
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memory/1952-54-0x000000002F2E1000-0x000000002F2E4000-memory.dmpFilesize
12KB
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memory/1952-55-0x0000000071C81000-0x0000000071C83000-memory.dmpFilesize
8KB
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memory/1952-56-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
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memory/1952-57-0x0000000072C6D000-0x0000000072C78000-memory.dmpFilesize
44KB
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memory/1952-58-0x0000000075DA1000-0x0000000075DA3000-memory.dmpFilesize
8KB
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memory/1952-383-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
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memory/1952-384-0x0000000072C6D000-0x0000000072C78000-memory.dmpFilesize
44KB