Analysis
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max time kernel
154s -
max time network
44s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
18/09/2022, 22:24
Static task
static1
Behavioral task
behavioral1
Sample
9b1ecfcc60aa64ff560fec55cac99ff2da66ecba030d9ee76c572e7837d0a0fc.xls
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
9b1ecfcc60aa64ff560fec55cac99ff2da66ecba030d9ee76c572e7837d0a0fc.xls
Resource
win10v2004-20220901-en
General
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Target
9b1ecfcc60aa64ff560fec55cac99ff2da66ecba030d9ee76c572e7837d0a0fc.xls
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Size
1.3MB
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MD5
20b9ea3c92dd839ec1779bac403a44e7
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SHA1
d4dd010d16da5d638b511f09598c430bef18c842
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SHA256
9b1ecfcc60aa64ff560fec55cac99ff2da66ecba030d9ee76c572e7837d0a0fc
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SHA512
a7fc30818b8d05c51792636c7dea031ef88cdbe076715cb6328cdf85fe672d37f0d9ec8ee6c1d44dbe62ed2e62b47c7b4a9056d617bd0704ca47a9056ebd605e
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SSDEEP
12288:5l07xAdrnmsyrfxHBZWJul+kWjVqG9wIUSlwvNkJf:UprpHBZKul+5kIVwu
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.
description pid pid_target Process procid_target Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process 1904 1508 cmd.exe 25 Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process 1748 1508 cmd.exe 25 Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process 892 1508 cmd.exe 25 -
Office loads VBA resources, possible macro or embedded object present
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Enumerates system info in registry 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Toolbar EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\MenuExt EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\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-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000" EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1508 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 1508 EXCEL.EXE 1508 EXCEL.EXE 1508 EXCEL.EXE 1508 EXCEL.EXE 1508 EXCEL.EXE 1508 EXCEL.EXE 1508 EXCEL.EXE 1508 EXCEL.EXE -
Suspicious use of WriteProcessMemory 16 IoCs
description pid Process procid_target PID 1508 wrote to memory of 1904 1508 EXCEL.EXE 26 PID 1508 wrote to memory of 1904 1508 EXCEL.EXE 26 PID 1508 wrote to memory of 1904 1508 EXCEL.EXE 26 PID 1508 wrote to memory of 1904 1508 EXCEL.EXE 26 PID 1508 wrote to memory of 1748 1508 EXCEL.EXE 28 PID 1508 wrote to memory of 1748 1508 EXCEL.EXE 28 PID 1508 wrote to memory of 1748 1508 EXCEL.EXE 28 PID 1508 wrote to memory of 1748 1508 EXCEL.EXE 28 PID 1508 wrote to memory of 892 1508 EXCEL.EXE 29 PID 1508 wrote to memory of 892 1508 EXCEL.EXE 29 PID 1508 wrote to memory of 892 1508 EXCEL.EXE 29 PID 1508 wrote to memory of 892 1508 EXCEL.EXE 29 PID 1904 wrote to memory of 756 1904 cmd.exe 32 PID 1904 wrote to memory of 756 1904 cmd.exe 32 PID 1904 wrote to memory of 756 1904 cmd.exe 32 PID 1904 wrote to memory of 756 1904 cmd.exe 32 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 756 attrib.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\9b1ecfcc60aa64ff560fec55cac99ff2da66ecba030d9ee76c572e7837d0a0fc.xls1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1508 -
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
PID:1904 -
C:\Windows\SysWOW64\attrib.exeattrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"3⤵
- Views/modifies file attributes
PID:756
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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
PID:1748
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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
PID:892
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