Analysis Overview
SHA256
91d861616547fa15ed365dbb5562abd70abdea2f351bbf0d04a4bd1d8fc6d074
Threat Level: Known bad
The file 91d861616547fa15ed365dbb5562abd70abdea2f351bbf0d04a4bd1d8fc6d074 was found to be: Known bad.
Malicious Activity Summary
Process spawned unexpected child process
Suspicious Office macro
System Location Discovery: System Language Discovery
Suspicious use of SetWindowsHookEx
Modifies registry class
Suspicious use of FindShellTrayWindow
Enumerates system info in registry
Suspicious behavior: AddClipboardFormatListener
Suspicious use of WriteProcessMemory
Checks processor information in registry
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-08 21:05
Signatures
Suspicious Office macro
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-08 21:05
Reported
2024-11-08 21:06
Platform
win7-20241023-en
Max time kernel
19s
Max time network
17s
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\rundll32.exe | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
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 |
Suspicious behavior: AddClipboardFormatListener
| 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 |
| 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
| Description | Indicator | Process | Target |
| PID 1956 wrote to memory of 2848 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Windows\SysWOW64\rundll32.exe |
| PID 1956 wrote to memory of 2848 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Windows\SysWOW64\rundll32.exe |
| PID 1956 wrote to memory of 2848 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Windows\SysWOW64\rundll32.exe |
| PID 1956 wrote to memory of 2848 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Windows\SysWOW64\rundll32.exe |
| PID 1956 wrote to memory of 2848 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Windows\SysWOW64\rundll32.exe |
| PID 1956 wrote to memory of 2848 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Windows\SysWOW64\rundll32.exe |
| PID 1956 wrote to memory of 2848 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Windows\SysWOW64\rundll32.exe |
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\91d861616547fa15ed365dbb5562abd70abdea2f351bbf0d04a4bd1d8fc6d074.xls
C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Users\Public\Documents\UUie.txt,DllRegisterServer
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | syracuse.best | udp |
Files
memory/1956-0-0x000000005FFF0000-0x0000000060000000-memory.dmp
memory/1956-1-0x0000000071F8D000-0x0000000071F98000-memory.dmp
memory/1956-2-0x0000000071F8D000-0x0000000071F98000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-08 21:05
Reported
2024-11-08 21:06
Platform
win10v2004-20241007-en
Max time kernel
59s
Max time network
58s
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\explorer.exe | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE |
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 |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000_Classes\Local Settings | C:\Windows\explorer.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 |
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 |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1900 wrote to memory of 2440 | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | C:\Windows\explorer.exe |
| PID 1900 wrote to memory of 2440 | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | C:\Windows\explorer.exe |
| PID 4124 wrote to memory of 1412 | N/A | C:\Windows\explorer.exe | C:\Windows\System32\WScript.exe |
| PID 4124 wrote to memory of 1412 | N/A | C:\Windows\explorer.exe | C:\Windows\System32\WScript.exe |
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\91d861616547fa15ed365dbb5562abd70abdea2f351bbf0d04a4bd1d8fc6d074.xls"
C:\Windows\explorer.exe
explorer.exe C:\Users\Public\Documents\J8t0HoAC.vbs
C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Public\Documents\J8t0HoAC.vbs"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | roaming.officeapps.live.com | udp |
| IE | 52.109.76.243:443 | roaming.officeapps.live.com | tcp |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.89.109.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | syracuse.best | udp |
| US | 8.8.8.8:53 | 243.76.109.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 75.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 3.173.189.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 53.210.109.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 71.209.201.84.in-addr.arpa | udp |
Files
memory/1900-1-0x00007FF9067AD000-0x00007FF9067AE000-memory.dmp
memory/1900-3-0x00007FF8C6790000-0x00007FF8C67A0000-memory.dmp
memory/1900-0-0x00007FF8C6790000-0x00007FF8C67A0000-memory.dmp
memory/1900-2-0x00007FF8C6790000-0x00007FF8C67A0000-memory.dmp
memory/1900-5-0x00007FF906710000-0x00007FF906905000-memory.dmp
memory/1900-6-0x00007FF906710000-0x00007FF906905000-memory.dmp
memory/1900-7-0x00007FF906710000-0x00007FF906905000-memory.dmp
memory/1900-8-0x00007FF8C6790000-0x00007FF8C67A0000-memory.dmp
memory/1900-4-0x00007FF8C6790000-0x00007FF8C67A0000-memory.dmp
memory/1900-12-0x00007FF906710000-0x00007FF906905000-memory.dmp
memory/1900-13-0x00007FF906710000-0x00007FF906905000-memory.dmp
memory/1900-14-0x00007FF8C4290000-0x00007FF8C42A0000-memory.dmp
memory/1900-11-0x00007FF906710000-0x00007FF906905000-memory.dmp
memory/1900-10-0x00007FF906710000-0x00007FF906905000-memory.dmp
memory/1900-9-0x00007FF906710000-0x00007FF906905000-memory.dmp
memory/1900-15-0x00007FF906710000-0x00007FF906905000-memory.dmp
memory/1900-16-0x00007FF906710000-0x00007FF906905000-memory.dmp
memory/1900-17-0x00007FF906710000-0x00007FF906905000-memory.dmp
memory/1900-18-0x00007FF8C4290000-0x00007FF8C42A0000-memory.dmp
C:\Users\Public\Documents\J8t0HoAC.vbs
| MD5 | a04c7a641958c6ce83ba9f70903e5fb4 |
| SHA1 | 1e9bec7c956e6906258d5c7c1a3984d54b06b526 |
| SHA256 | 1c548bbac3d414d74f26fe02c65aac9749b8d5ab067e078cf7d3cd75a59edfb9 |
| SHA512 | 539bad66306114eb9ff1f70aaf3d90536b7036d34adc35108675c9a37aeb15b72bae671bcd6c6229689b4954f41c8bdfd5c0295ed0f2b1495d1e9a7df77ffc05 |
memory/1900-30-0x00007FF906710000-0x00007FF906905000-memory.dmp
memory/1900-31-0x00007FF9067AD000-0x00007FF9067AE000-memory.dmp
memory/1900-32-0x00007FF906710000-0x00007FF906905000-memory.dmp
memory/1900-33-0x00007FF906710000-0x00007FF906905000-memory.dmp