Analysis
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max time kernel
141s -
max time network
30s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
26-11-2022 03:10
Behavioral task
behavioral1
Sample
91d0e2db5186b1bbb572b959915706234f25e01ab065c97a23986341cb4d77bf.xls
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
91d0e2db5186b1bbb572b959915706234f25e01ab065c97a23986341cb4d77bf.xls
Resource
win10v2004-20221111-en
General
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Target
91d0e2db5186b1bbb572b959915706234f25e01ab065c97a23986341cb4d77bf.xls
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Size
131KB
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MD5
578ec83f00482a0eb6ef9ac7d335824a
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SHA1
832f7ac4715fc88e203f2ef42d2e5511e2bf7bec
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SHA256
91d0e2db5186b1bbb572b959915706234f25e01ab065c97a23986341cb4d77bf
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SHA512
680480e8ae798fdf2bbc3a45a4bc30b858416d6440f01558ef7a261fe5ce073b0066d7f314e3d487a537cb61829f01965f7f95352d5e6af68f4f1e1548f51baf
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SSDEEP
1536:wnnnjYiabhn9nhnrngvna3APUi5g0Ka0pNMWVbrzQSstITkbA23CozWWt2XKyISs:X30UX0Ka0pNMWVbrzQSstITkZ7yaPZ
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 1548 960 cmd.exe EXCEL.EXE Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process 1108 960 cmd.exe EXCEL.EXE Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process 1628 960 cmd.exe 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\Toolbar EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\MenuExt 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 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 Key created \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 960 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
EXCEL.EXEpid process 960 EXCEL.EXE 960 EXCEL.EXE 960 EXCEL.EXE -
Suspicious use of WriteProcessMemory 16 IoCs
Processes:
EXCEL.EXEcmd.exedescription pid process target process PID 960 wrote to memory of 1548 960 EXCEL.EXE cmd.exe PID 960 wrote to memory of 1548 960 EXCEL.EXE cmd.exe PID 960 wrote to memory of 1548 960 EXCEL.EXE cmd.exe PID 960 wrote to memory of 1548 960 EXCEL.EXE cmd.exe PID 960 wrote to memory of 1108 960 EXCEL.EXE cmd.exe PID 960 wrote to memory of 1108 960 EXCEL.EXE cmd.exe PID 960 wrote to memory of 1108 960 EXCEL.EXE cmd.exe PID 960 wrote to memory of 1108 960 EXCEL.EXE cmd.exe PID 960 wrote to memory of 1628 960 EXCEL.EXE cmd.exe PID 960 wrote to memory of 1628 960 EXCEL.EXE cmd.exe PID 960 wrote to memory of 1628 960 EXCEL.EXE cmd.exe PID 960 wrote to memory of 1628 960 EXCEL.EXE cmd.exe PID 1548 wrote to memory of 1456 1548 cmd.exe attrib.exe PID 1548 wrote to memory of 1456 1548 cmd.exe attrib.exe PID 1548 wrote to memory of 1456 1548 cmd.exe attrib.exe PID 1548 wrote to memory of 1456 1548 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\91d0e2db5186b1bbb572b959915706234f25e01ab065c97a23986341cb4d77bf.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\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/960-54-0x000000002F831000-0x000000002F834000-memory.dmpFilesize
12KB
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memory/960-55-0x0000000071C81000-0x0000000071C83000-memory.dmpFilesize
8KB
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memory/960-56-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
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memory/960-57-0x0000000072C6D000-0x0000000072C78000-memory.dmpFilesize
44KB
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memory/960-58-0x0000000075DA1000-0x0000000075DA3000-memory.dmpFilesize
8KB
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memory/960-59-0x0000000072C6D000-0x0000000072C78000-memory.dmpFilesize
44KB
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memory/960-409-0x0000000072C6D000-0x0000000072C78000-memory.dmpFilesize
44KB
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memory/1108-221-0x0000000000000000-mapping.dmp
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memory/1456-223-0x0000000000000000-mapping.dmp
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memory/1548-220-0x0000000000000000-mapping.dmp
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memory/1628-222-0x0000000000000000-mapping.dmp