Analysis Overview
SHA256
d3592e74ae6782a68ae77bddb4829989f92508f3c098614c14e2ac5ef0588bec
Threat Level: Known bad
The file d3592e74ae6782a68ae77bddb4829989f92508f3c098614c14e2ac5ef0588bec was found to be: Known bad.
Malicious Activity Summary
Process spawned unexpected child process
Suspicious Office macro
System Location Discovery: System Language Discovery
Suspicious behavior: AddClipboardFormatListener
Checks processor information in registry
Enumerates system info in registry
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of FindShellTrayWindow
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-11 17:40
Signatures
Suspicious Office macro
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-11 17:40
Reported
2024-11-11 17:42
Platform
win7-20241010-en
Max time kernel
61s
Max time network
133s
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\regsvr32.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:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWow64\regsvr32.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 |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2116 wrote to memory of 2252 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Windows\SysWow64\regsvr32.exe |
| PID 2116 wrote to memory of 2252 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Windows\SysWow64\regsvr32.exe |
| PID 2116 wrote to memory of 2252 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Windows\SysWow64\regsvr32.exe |
| PID 2116 wrote to memory of 2252 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Windows\SysWow64\regsvr32.exe |
| PID 2116 wrote to memory of 2252 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Windows\SysWow64\regsvr32.exe |
| PID 2116 wrote to memory of 2252 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Windows\SysWow64\regsvr32.exe |
| PID 2116 wrote to memory of 2252 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Windows\SysWow64\regsvr32.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\d3592e74ae6782a68ae77bddb4829989f92508f3c098614c14e2ac5ef0588bec.xlsm
C:\Windows\SysWow64\regsvr32.exe
C:\Windows\SysWow64\regsvr32.exe -s ..\rfs.dll
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | www.ajaxmatters.com | udp |
| US | 104.21.28.230:80 | www.ajaxmatters.com | tcp |
| US | 104.21.28.230:443 | www.ajaxmatters.com | tcp |
| US | 8.8.8.8:53 | c.pki.goog | udp |
| GB | 142.250.187.227:80 | c.pki.goog | tcp |
Files
memory/2116-0-0x000000005FFF0000-0x0000000060000000-memory.dmp
memory/2116-1-0x0000000072C3D000-0x0000000072C48000-memory.dmp
C:\Users\Admin\rfs.dll
| MD5 | 4ed8ca5542b641fddd200acebadf4e3c |
| SHA1 | 41fd7fb6cb84805fbc229cbf13620f80a5008003 |
| SHA256 | 3f03ee986c82c3be72da6272448f92d97426f53e07079334edeb502f6386cc33 |
| SHA512 | 866719609b7200cdd4d97b6a83d7fb6424d3900b555e23d2db8744539b1ae204c0da0a5e595c676ee4cad7df3f743aad1e746c750cd30afe3a74d89bf188979a |
memory/2116-26-0x0000000072C3D000-0x0000000072C48000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-11 17:40
Reported
2024-11-11 17:42
Platform
win10v2004-20241007-en
Max time kernel
133s
Max time network
144s
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\SysWow64\regsvr32.exe | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWow64\regsvr32.exe | 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 |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1080 wrote to memory of 620 | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | C:\Windows\SysWow64\regsvr32.exe |
| PID 1080 wrote to memory of 620 | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | C:\Windows\SysWow64\regsvr32.exe |
| PID 1080 wrote to memory of 620 | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | C:\Windows\SysWow64\regsvr32.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\d3592e74ae6782a68ae77bddb4829989f92508f3c098614c14e2ac5ef0588bec.xlsm"
C:\Windows\SysWow64\regsvr32.exe
C:\Windows\SysWow64\regsvr32.exe -s ..\rfs.dll
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 70.209.201.84.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.89.109.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | roaming.officeapps.live.com | udp |
| GB | 52.109.32.7:443 | roaming.officeapps.live.com | tcp |
| US | 8.8.8.8:53 | www.ajaxmatters.com | udp |
| US | 104.21.28.230:80 | www.ajaxmatters.com | tcp |
| US | 104.21.28.230:443 | www.ajaxmatters.com | tcp |
| US | 8.8.8.8:53 | c.pki.goog | udp |
| GB | 172.217.16.227:80 | c.pki.goog | tcp |
| US | 8.8.8.8:53 | 7.32.109.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 230.28.21.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 227.16.217.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 253.15.104.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 212.20.149.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 105.209.201.84.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 14.227.111.52.in-addr.arpa | udp |
Files
memory/1080-2-0x00007FF7ED410000-0x00007FF7ED420000-memory.dmp
memory/1080-3-0x00007FF82D42D000-0x00007FF82D42E000-memory.dmp
memory/1080-0-0x00007FF7ED410000-0x00007FF7ED420000-memory.dmp
memory/1080-5-0x00007FF7ED410000-0x00007FF7ED420000-memory.dmp
memory/1080-4-0x00007FF7ED410000-0x00007FF7ED420000-memory.dmp
memory/1080-7-0x00007FF82D390000-0x00007FF82D585000-memory.dmp
memory/1080-6-0x00007FF82D390000-0x00007FF82D585000-memory.dmp
memory/1080-1-0x00007FF7ED410000-0x00007FF7ED420000-memory.dmp
memory/1080-11-0x00007FF82D390000-0x00007FF82D585000-memory.dmp
memory/1080-14-0x00007FF82D390000-0x00007FF82D585000-memory.dmp
memory/1080-13-0x00007FF82D390000-0x00007FF82D585000-memory.dmp
memory/1080-12-0x00007FF82D390000-0x00007FF82D585000-memory.dmp
memory/1080-16-0x00007FF7EACA0000-0x00007FF7EACB0000-memory.dmp
memory/1080-15-0x00007FF82D390000-0x00007FF82D585000-memory.dmp
memory/1080-10-0x00007FF82D390000-0x00007FF82D585000-memory.dmp
memory/1080-17-0x00007FF7EACA0000-0x00007FF7EACB0000-memory.dmp
memory/1080-18-0x00007FF82D390000-0x00007FF82D585000-memory.dmp
memory/1080-9-0x00007FF82D390000-0x00007FF82D585000-memory.dmp
memory/1080-8-0x00007FF82D390000-0x00007FF82D585000-memory.dmp
C:\Users\Admin\rfs.dll
| MD5 | 4ed8ca5542b641fddd200acebadf4e3c |
| SHA1 | 41fd7fb6cb84805fbc229cbf13620f80a5008003 |
| SHA256 | 3f03ee986c82c3be72da6272448f92d97426f53e07079334edeb502f6386cc33 |
| SHA512 | 866719609b7200cdd4d97b6a83d7fb6424d3900b555e23d2db8744539b1ae204c0da0a5e595c676ee4cad7df3f743aad1e746c750cd30afe3a74d89bf188979a |
memory/1080-40-0x00007FF82D390000-0x00007FF82D585000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b8ab77100df80ab2.customDestinations-ms
| MD5 | 278d74fd4289d085cfbe359a67ebd845 |
| SHA1 | 3612c2032b54d673fb4e3da53c995877b6dcc001 |
| SHA256 | cf27b74b6c6f59422bdaf1cdf4cd261aee875188e45b1bd1c8ec46726d944061 |
| SHA512 | f25522b830ec4681b8fb83d353f7b953cb638c3e022980fcef9f85be1665ffe5594e3c9e98794b9ff9ad4f95c010800bc65949c2ddbdbb82a55a1c0ede75917c |