Analysis Overview
SHA256
7205161480f69a5b2fb891cf8af929cc2acc1b22828f3bb79c352abe2f79be03
Threat Level: Known bad
The file 7205161480f69a5b2fb891cf8af929cc2acc1b22828f3bb79c352abe2f79be03 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
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of FindShellTrayWindow
Enumerates system info in registry
Checks processor information in registry
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-11 20:39
Signatures
Suspicious Office macro
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-11 20:39
Reported
2024-11-11 20:42
Platform
win7-20241010-en
Max time kernel
117s
Max time network
122s
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 |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2124 wrote to memory of 2436 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Windows\SysWow64\regsvr32.exe |
| PID 2124 wrote to memory of 2436 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Windows\SysWow64\regsvr32.exe |
| PID 2124 wrote to memory of 2436 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Windows\SysWow64\regsvr32.exe |
| PID 2124 wrote to memory of 2436 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Windows\SysWow64\regsvr32.exe |
| PID 2124 wrote to memory of 2436 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Windows\SysWow64\regsvr32.exe |
| PID 2124 wrote to memory of 2436 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Windows\SysWow64\regsvr32.exe |
| PID 2124 wrote to memory of 2436 | 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\7205161480f69a5b2fb891cf8af929cc2acc1b22828f3bb79c352abe2f79be03.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 | beetle-j.jp | udp |
| JP | 219.100.169.159:80 | beetle-j.jp | tcp |
| US | 8.8.8.8:53 | brutobrasil.com.br | udp |
| US | 209.126.103.109:443 | brutobrasil.com.br | tcp |
| US | 209.126.103.109:443 | brutobrasil.com.br | tcp |
| US | 209.126.103.109:443 | brutobrasil.com.br | tcp |
| US | 209.126.103.109:443 | brutobrasil.com.br | tcp |
| US | 8.8.8.8:53 | e3technology.in | udp |
| US | 3.33.130.190:80 | e3technology.in | tcp |
Files
memory/2124-0-0x000000005FFF0000-0x0000000060000000-memory.dmp
memory/2124-1-0x000000007254D000-0x0000000072558000-memory.dmp
C:\Users\Admin\rfs.dll
| MD5 | e89f75f918dbdcee28604d4e09dd71d7 |
| SHA1 | f9d9055e9878723a12063b47d4a1a5f58c3eb1e9 |
| SHA256 | 6dc9c7fc93bb488bb0520a6c780a8d3c0fb5486a4711aca49b4c53fac7393023 |
| SHA512 | 8df0ab2e3679b64a6174deff4259ae5680f88e3ae307e0ea2dfff88ec4ba14f3477c9fe3a5aa5da3a8e857601170a5108ed75f6d6975958ac7a314e4a336aed0 |
memory/2124-7-0x000000007254D000-0x0000000072558000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-11 20:39
Reported
2024-11-11 20:42
Platform
win10v2004-20241007-en
Max time kernel
148s
Max time network
150s
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 960 wrote to memory of 4020 | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | C:\Windows\SysWow64\regsvr32.exe |
| PID 960 wrote to memory of 4020 | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | C:\Windows\SysWow64\regsvr32.exe |
| PID 960 wrote to memory of 4020 | 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\7205161480f69a5b2fb891cf8af929cc2acc1b22828f3bb79c352abe2f79be03.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 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.32.109.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | roaming.officeapps.live.com | udp |
| GB | 52.109.28.47:443 | roaming.officeapps.live.com | tcp |
| US | 8.8.8.8:53 | beetle-j.jp | udp |
| JP | 219.100.169.159:80 | beetle-j.jp | tcp |
| US | 8.8.8.8:53 | 47.28.109.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 134.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | brutobrasil.com.br | udp |
| US | 209.126.103.109:443 | brutobrasil.com.br | tcp |
| US | 8.8.8.8:53 | 159.169.100.219.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 109.103.126.209.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.149.64.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 233.38.18.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | www.brutobrasil.com.br | udp |
| US | 209.126.103.109:443 | www.brutobrasil.com.br | tcp |
| US | 8.8.8.8:53 | e3technology.in | udp |
| US | 15.197.148.33:80 | e3technology.in | tcp |
| US | 8.8.8.8:53 | 33.148.197.15.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 17.173.189.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.163.245.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.42.69.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 139.190.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.209.201.84.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 19.229.111.52.in-addr.arpa | udp |
Files
memory/960-0-0x00007FFB60F0D000-0x00007FFB60F0E000-memory.dmp
memory/960-1-0x00007FFB20EF0000-0x00007FFB20F00000-memory.dmp
memory/960-3-0x00007FFB20EF0000-0x00007FFB20F00000-memory.dmp
memory/960-2-0x00007FFB20EF0000-0x00007FFB20F00000-memory.dmp
memory/960-4-0x00007FFB20EF0000-0x00007FFB20F00000-memory.dmp
memory/960-5-0x00007FFB60E70000-0x00007FFB61065000-memory.dmp
memory/960-8-0x00007FFB20EF0000-0x00007FFB20F00000-memory.dmp
memory/960-7-0x00007FFB60E70000-0x00007FFB61065000-memory.dmp
memory/960-10-0x00007FFB60E70000-0x00007FFB61065000-memory.dmp
memory/960-12-0x00007FFB60E70000-0x00007FFB61065000-memory.dmp
memory/960-13-0x00007FFB1ED00000-0x00007FFB1ED10000-memory.dmp
memory/960-11-0x00007FFB60E70000-0x00007FFB61065000-memory.dmp
memory/960-9-0x00007FFB60E70000-0x00007FFB61065000-memory.dmp
memory/960-14-0x00007FFB1ED00000-0x00007FFB1ED10000-memory.dmp
memory/960-16-0x00007FFB60E70000-0x00007FFB61065000-memory.dmp
memory/960-15-0x00007FFB60E70000-0x00007FFB61065000-memory.dmp
memory/960-17-0x00007FFB60E70000-0x00007FFB61065000-memory.dmp
memory/960-6-0x00007FFB60E70000-0x00007FFB61065000-memory.dmp
C:\Users\Admin\rfs.dll
| MD5 | e89f75f918dbdcee28604d4e09dd71d7 |
| SHA1 | f9d9055e9878723a12063b47d4a1a5f58c3eb1e9 |
| SHA256 | 6dc9c7fc93bb488bb0520a6c780a8d3c0fb5486a4711aca49b4c53fac7393023 |
| SHA512 | 8df0ab2e3679b64a6174deff4259ae5680f88e3ae307e0ea2dfff88ec4ba14f3477c9fe3a5aa5da3a8e857601170a5108ed75f6d6975958ac7a314e4a336aed0 |
memory/960-38-0x00007FFB60E70000-0x00007FFB61065000-memory.dmp
memory/960-39-0x00007FFB60F0D000-0x00007FFB60F0E000-memory.dmp
memory/960-40-0x00007FFB60E70000-0x00007FFB61065000-memory.dmp
memory/960-41-0x00007FFB60E70000-0x00007FFB61065000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b8ab77100df80ab2.customDestinations-ms
| MD5 | 2d368d57bafb2843fe4226354da020b0 |
| SHA1 | 2bedb27a0b80d0d8310eab5b9109d9aefac4b1f9 |
| SHA256 | e4d5c4966338e41fd2776234d9cf530439911da7d71d399b3abee769af9352de |
| SHA512 | eeaa58577d20c020d41ef7f19d6fb0c4406bc881cbdade7aa989dd30a18cff93e96faed0df08b5eacd0db83e3dd8d4705f566830ac6c5a9e27f3291fd1ef2c8b |