Analysis Overview
SHA256
48c8327b8fa0bd5e233a28148952aacad1180803bd004d344321eadc6c710479
Threat Level: Known bad
The file cc31c5d769e28c33b79dfb1c2b6cbea6 was found to be: Known bad.
Malicious Activity Summary
Process spawned unexpected child process
Suspicious Office macro
Office loads VBA resources, possible macro or embedded object present
Enumerates system info in registry
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of WriteProcessMemory
Suspicious use of FindShellTrayWindow
Modifies Internet Explorer settings
Suspicious use of SetWindowsHookEx
Views/modifies file attributes
Checks processor information in registry
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2023-12-28 06:35
Signatures
Suspicious Office macro
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-12-28 06:35
Reported
2024-01-02 15:28
Platform
win7-20231215-en
Max time kernel
102s
Max time network
120s
Command Line
Signatures
Process spawned unexpected child process
| Description | Indicator | Process | Target |
| Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE |
| Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE |
| Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE |
Office loads VBA resources, possible macro or embedded object present
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
Modifies Internet Explorer settings
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Internet Explorer\Toolbar | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Internet Explorer\MenuExt | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
Suspicious behavior: AddClipboardFormatListener
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
Suspicious use of WriteProcessMemory
Views/modifies file attributes
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
Processes
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\cc31c5d769e28c33b79dfb1c2b6cbea6.xls
C:\Windows\SysWOW64\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c RD /S /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c Del /F /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
Network
Files
memory/2480-1-0x000000007242D000-0x0000000072438000-memory.dmp
memory/2480-0-0x000000005FFF0000-0x0000000060000000-memory.dmp
memory/2480-4-0x000000007242D000-0x0000000072438000-memory.dmp
memory/2480-6-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-5-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-9-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-17-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-29-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-35-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-34-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-57-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-33-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-32-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-83-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-107-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-31-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-30-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-28-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-130-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-149-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-177-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-203-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-248-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-228-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-274-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-301-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-321-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-27-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-26-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-25-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-24-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-23-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-22-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-21-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-20-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-19-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-18-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-16-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-15-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-14-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-13-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-12-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-11-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-10-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-8-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-7-0x0000000000680000-0x0000000000780000-memory.dmp
memory/2480-355-0x000000007242D000-0x0000000072438000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-12-28 06:35
Reported
2024-01-02 15:28
Platform
win10v2004-20231215-en
Max time kernel
100s
Max time network
139s
Command Line
Signatures
Process spawned unexpected child process
| Description | Indicator | Process | Target |
| Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process | N/A | C:\Windows\system32\cmd.exe | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE |
| Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process | N/A | C:\Windows\system32\cmd.exe | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE |
| Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process | N/A | C:\Windows\system32\cmd.exe | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE |
Suspicious Office macro
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\BIOS | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
Suspicious behavior: AddClipboardFormatListener
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
Views/modifies file attributes
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\attrib.exe | N/A |
Processes
C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\cc31c5d769e28c33b79dfb1c2b6cbea6.xls"
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c RD /S /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c Del /F /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 5.181.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.32.109.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 173.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.136.104.51.in-addr.arpa | udp |
| US | 138.91.171.81:80 | tcp | |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.99.105.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 167.109.18.2.in-addr.arpa | udp |
| NL | 20.73.194.208:443 | tcp | |
| US | 20.42.65.89:443 | tcp | |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 57.110.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 146.78.124.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 100.5.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 119.110.54.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | udp | |
| US | 8.8.8.8:53 | udp | |
| US | 8.8.8.8:53 | udp | |
| US | 8.8.8.8:53 | udp | |
| US | 8.8.8.8:53 | udp | |
| US | 8.8.8.8:53 | 29.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 211.135.221.88.in-addr.arpa | udp |
| GB | 88.221.135.211:80 | tcp | |
| US | 204.79.197.200:443 | tcp | |
| US | 204.79.197.200:443 | tcp |
Files
memory/2544-3-0x00007FFBE28D0000-0x00007FFBE2AC5000-memory.dmp
memory/2544-8-0x00007FFBA2950000-0x00007FFBA2960000-memory.dmp
memory/2544-9-0x00007FFBE28D0000-0x00007FFBE2AC5000-memory.dmp
memory/2544-11-0x00007FFBE28D0000-0x00007FFBE2AC5000-memory.dmp
memory/2544-15-0x00007FFBE28D0000-0x00007FFBE2AC5000-memory.dmp
memory/2544-17-0x00007FFBE28D0000-0x00007FFBE2AC5000-memory.dmp
memory/2544-19-0x00007FFBE28D0000-0x00007FFBE2AC5000-memory.dmp
memory/2544-20-0x00007FFBE28D0000-0x00007FFBE2AC5000-memory.dmp
memory/2544-18-0x00007FFBA06D0000-0x00007FFBA06E0000-memory.dmp
memory/2544-16-0x00007FFBE28D0000-0x00007FFBE2AC5000-memory.dmp
memory/2544-14-0x00007FFBE28D0000-0x00007FFBE2AC5000-memory.dmp
memory/2544-13-0x00007FFBE28D0000-0x00007FFBE2AC5000-memory.dmp
memory/2544-12-0x00007FFBA06D0000-0x00007FFBA06E0000-memory.dmp
memory/2544-10-0x00007FFBE28D0000-0x00007FFBE2AC5000-memory.dmp
memory/2544-7-0x00007FFBE28D0000-0x00007FFBE2AC5000-memory.dmp
memory/2544-6-0x00007FFBA2950000-0x00007FFBA2960000-memory.dmp
memory/2544-4-0x00007FFBA2950000-0x00007FFBA2960000-memory.dmp
memory/2544-5-0x00007FFBE28D0000-0x00007FFBE2AC5000-memory.dmp
memory/2544-2-0x00007FFBA2950000-0x00007FFBA2960000-memory.dmp
memory/2544-0-0x00007FFBA2950000-0x00007FFBA2960000-memory.dmp
memory/2544-1-0x00007FFBE28D0000-0x00007FFBE2AC5000-memory.dmp
memory/2544-36-0x00007FFBE28D0000-0x00007FFBE2AC5000-memory.dmp
memory/2544-37-0x00007FFBE28D0000-0x00007FFBE2AC5000-memory.dmp
memory/2544-50-0x0000023B17100000-0x0000023B180D0000-memory.dmp
memory/2544-60-0x0000023B17100000-0x0000023B180D0000-memory.dmp
memory/2544-64-0x0000023B17100000-0x0000023B180D0000-memory.dmp
memory/2544-67-0x0000023B11E20000-0x0000023B12620000-memory.dmp
memory/2544-71-0x0000023B11E20000-0x0000023B12620000-memory.dmp
memory/2544-76-0x0000023B11E20000-0x0000023B12620000-memory.dmp
memory/2544-74-0x0000023B11E20000-0x0000023B12620000-memory.dmp
memory/2544-89-0x0000023B11E20000-0x0000023B12620000-memory.dmp
memory/2544-80-0x0000023B17100000-0x0000023B180D0000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\cc31c5d769e28c33b79dfb1c2b6cbea6.xls
| MD5 | d41d8cd98f00b204e9800998ecf8427e |
| SHA1 | da39a3ee5e6b4b0d3255bfef95601890afd80709 |
| SHA256 | e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 |
| SHA512 | cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e |
memory/2544-70-0x0000023B11E20000-0x0000023B12620000-memory.dmp
memory/2544-141-0x00007FFBE28D0000-0x00007FFBE2AC5000-memory.dmp
memory/2544-140-0x00007FFBA2950000-0x00007FFBA2960000-memory.dmp
memory/2544-139-0x00007FFBA2950000-0x00007FFBA2960000-memory.dmp
memory/2544-138-0x00007FFBA2950000-0x00007FFBA2960000-memory.dmp
memory/2544-137-0x00007FFBA2950000-0x00007FFBA2960000-memory.dmp