Analysis Overview
SHA256
fee9b11a869311cea1ff31c82b209c92ea89f545cbf65347ce9dda7b79c82fd3
Threat Level: Known bad
The file fee9b11a869311cea1ff31c82b209c92ea89f545cbf65347ce9dda7b79c82fd3 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 WriteProcessMemory
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Checks processor information in registry
Enumerates system info in registry
Suspicious behavior: AddClipboardFormatListener
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-11 17:32
Signatures
Suspicious Office macro
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-11 17:32
Reported
2024-11-11 17:34
Platform
win7-20240903-en
Max time kernel
121s
Max time network
128s
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 2968 wrote to memory of 600 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Windows\SysWow64\regsvr32.exe |
| PID 2968 wrote to memory of 600 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Windows\SysWow64\regsvr32.exe |
| PID 2968 wrote to memory of 600 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Windows\SysWow64\regsvr32.exe |
| PID 2968 wrote to memory of 600 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Windows\SysWow64\regsvr32.exe |
| PID 2968 wrote to memory of 600 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Windows\SysWow64\regsvr32.exe |
| PID 2968 wrote to memory of 600 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Windows\SysWow64\regsvr32.exe |
| PID 2968 wrote to memory of 600 | 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\fee9b11a869311cea1ff31c82b209c92ea89f545cbf65347ce9dda7b79c82fd3.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 |
| US | 8.8.8.8:53 | crl.microsoft.com | udp |
| GB | 2.19.117.18:80 | crl.microsoft.com | tcp |
Files
memory/2968-1-0x0000000071FCD000-0x0000000071FD8000-memory.dmp
memory/2968-0-0x000000005FFF0000-0x0000000060000000-memory.dmp
C:\Users\Admin\rfs.dll
| MD5 | 4ed8ca5542b641fddd200acebadf4e3c |
| SHA1 | 41fd7fb6cb84805fbc229cbf13620f80a5008003 |
| SHA256 | 3f03ee986c82c3be72da6272448f92d97426f53e07079334edeb502f6386cc33 |
| SHA512 | 866719609b7200cdd4d97b6a83d7fb6424d3900b555e23d2db8744539b1ae204c0da0a5e595c676ee4cad7df3f743aad1e746c750cd30afe3a74d89bf188979a |
memory/2968-26-0x0000000071FCD000-0x0000000071FD8000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-11 17:32
Reported
2024-11-11 17:34
Platform
win10v2004-20241007-en
Max time kernel
148s
Max time network
151s
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 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 |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 | 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 4560 wrote to memory of 3600 | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | C:\Windows\SysWow64\regsvr32.exe |
| PID 4560 wrote to memory of 3600 | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | C:\Windows\SysWow64\regsvr32.exe |
| PID 4560 wrote to memory of 3600 | 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\fee9b11a869311cea1ff31c82b209c92ea89f545cbf65347ce9dda7b79c82fd3.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 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 106.209.201.84.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 | 8.8.8.8:53 | 97.32.109.52.in-addr.arpa | udp |
| US | 172.67.147.196:80 | www.ajaxmatters.com | tcp |
| US | 172.67.147.196:443 | www.ajaxmatters.com | tcp |
| US | 8.8.8.8:53 | c.pki.goog | udp |
| GB | 142.250.187.227:80 | c.pki.goog | tcp |
| US | 8.8.8.8:53 | 7.32.109.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 196.147.67.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 69.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.73.42.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 212.20.149.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.42.69.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 72.209.201.84.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 29.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.236.111.52.in-addr.arpa | udp |
Files
memory/4560-1-0x00007FFC2D92D000-0x00007FFC2D92E000-memory.dmp
memory/4560-0-0x00007FFBED910000-0x00007FFBED920000-memory.dmp
memory/4560-3-0x00007FFBED910000-0x00007FFBED920000-memory.dmp
memory/4560-4-0x00007FFBED910000-0x00007FFBED920000-memory.dmp
memory/4560-5-0x00007FFBED910000-0x00007FFBED920000-memory.dmp
memory/4560-2-0x00007FFBED910000-0x00007FFBED920000-memory.dmp
memory/4560-7-0x00007FFC2D890000-0x00007FFC2DA85000-memory.dmp
memory/4560-6-0x00007FFC2D890000-0x00007FFC2DA85000-memory.dmp
memory/4560-11-0x00007FFC2D890000-0x00007FFC2DA85000-memory.dmp
memory/4560-10-0x00007FFC2D890000-0x00007FFC2DA85000-memory.dmp
memory/4560-9-0x00007FFC2D890000-0x00007FFC2DA85000-memory.dmp
memory/4560-12-0x00007FFBEB8B0000-0x00007FFBEB8C0000-memory.dmp
memory/4560-8-0x00007FFC2D890000-0x00007FFC2DA85000-memory.dmp
memory/4560-13-0x00007FFBEB8B0000-0x00007FFBEB8C0000-memory.dmp
memory/4560-14-0x00007FFC2D890000-0x00007FFC2DA85000-memory.dmp
memory/4560-16-0x00007FFC2D890000-0x00007FFC2DA85000-memory.dmp
memory/4560-15-0x00007FFC2D890000-0x00007FFC2DA85000-memory.dmp
memory/4560-18-0x00007FFC2D890000-0x00007FFC2DA85000-memory.dmp
memory/4560-19-0x00007FFC2D890000-0x00007FFC2DA85000-memory.dmp
memory/4560-17-0x00007FFC2D890000-0x00007FFC2DA85000-memory.dmp
C:\Users\Admin\rfs.dll
| MD5 | 4ed8ca5542b641fddd200acebadf4e3c |
| SHA1 | 41fd7fb6cb84805fbc229cbf13620f80a5008003 |
| SHA256 | 3f03ee986c82c3be72da6272448f92d97426f53e07079334edeb502f6386cc33 |
| SHA512 | 866719609b7200cdd4d97b6a83d7fb6424d3900b555e23d2db8744539b1ae204c0da0a5e595c676ee4cad7df3f743aad1e746c750cd30afe3a74d89bf188979a |
memory/4560-41-0x00007FFC2D890000-0x00007FFC2DA85000-memory.dmp
memory/4560-42-0x00007FFC2D92D000-0x00007FFC2D92E000-memory.dmp
memory/4560-46-0x00007FFC2D890000-0x00007FFC2DA85000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b8ab77100df80ab2.customDestinations-ms
| MD5 | 9060fe013c3d0fffb9db8e1fbdcf9b7f |
| SHA1 | 00d481fd2455f3a984a693376a28edccbe1befa1 |
| SHA256 | a74a999d60cc60aec39408899b9926aa55ae56b032f64961efa18223552261ff |
| SHA512 | 1358841afbc14431389cc6c8578604d9e26dae60cbc3c870a93e034744700966160ee6ebddc2fb306cb50886eda41d457ba1b2c5066c040fc255fff33e7453d2 |