Analysis Overview
SHA256
8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b
Threat Level: Known bad
The file 8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b was found to be: Known bad.
Malicious Activity Summary
Orcus family
Orcus
Executes dropped EXE
Loads dropped DLL
Checks computer location settings
Drops desktop.ini file(s)
Drops file in Windows directory
Unsigned PE
System Location Discovery: System Language Discovery
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious use of SendNotifyMessage
Suspicious use of FindShellTrayWindow
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2025-01-16 01:01
Signatures
Orcus family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-01-16 01:01
Reported
2025-01-16 01:04
Platform
win7-20240903-en
Max time kernel
147s
Max time network
120s
Command Line
Signatures
Orcus
Orcus family
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe | N/A |
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2688 wrote to memory of 1600 | N/A | C:\Users\Admin\AppData\Local\Temp\8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 2688 wrote to memory of 1600 | N/A | C:\Users\Admin\AppData\Local\Temp\8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 2688 wrote to memory of 1600 | N/A | C:\Users\Admin\AppData\Local\Temp\8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 2688 wrote to memory of 1600 | N/A | C:\Users\Admin\AppData\Local\Temp\8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe
"C:\Users\Admin\AppData\Local\Temp\8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe"
C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe"
Network
| Country | Destination | Domain | Proto |
| N/A | 127.0.0.1:10134 | tcp | |
| N/A | 127.0.0.1:10134 | tcp | |
| N/A | 127.0.0.1:10134 | tcp | |
| N/A | 127.0.0.1:10134 | tcp | |
| N/A | 127.0.0.1:10134 | tcp | |
| N/A | 127.0.0.1:10134 | tcp | |
| N/A | 127.0.0.1:10134 | tcp | |
| N/A | 127.0.0.1:10134 | tcp | |
| N/A | 127.0.0.1:10134 | tcp | |
| N/A | 127.0.0.1:10134 | tcp | |
| N/A | 127.0.0.1:10134 | tcp | |
| N/A | 127.0.0.1:10134 | tcp | |
| N/A | 127.0.0.1:10134 | tcp | |
| N/A | 127.0.0.1:10134 | tcp |
Files
memory/2688-0-0x0000000074981000-0x0000000074982000-memory.dmp
memory/2688-1-0x0000000074980000-0x0000000074F2B000-memory.dmp
memory/2688-2-0x0000000074980000-0x0000000074F2B000-memory.dmp
\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
| MD5 | 0dcfd999de97c5a2547ffac4f17a9202 |
| SHA1 | e4c3b1f29ce47e4fb509c856302ed922998b66bb |
| SHA256 | 8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b |
| SHA512 | 04d01ea3afff1aa6e14a996e0e9c3a0a000eb849be82462c09115adb1ff2d403375bd7c97bf03522c145c2cdd087b17d87146c1ee6d5fbf3262bc0b7a1e8ad37 |
memory/2688-11-0x0000000074980000-0x0000000074F2B000-memory.dmp
memory/1600-12-0x0000000074980000-0x0000000074F2B000-memory.dmp
memory/1600-14-0x0000000074980000-0x0000000074F2B000-memory.dmp
memory/1600-13-0x0000000074980000-0x0000000074F2B000-memory.dmp
memory/1600-15-0x0000000074980000-0x0000000074F2B000-memory.dmp
memory/1600-16-0x0000000074980000-0x0000000074F2B000-memory.dmp
memory/1600-17-0x0000000074980000-0x0000000074F2B000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-01-16 01:01
Reported
2025-01-16 01:04
Platform
win10v2004-20241007-en
Max time kernel
149s
Max time network
136s
Command Line
Signatures
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe | N/A |
Drops desktop.ini file(s)
| Description | Indicator | Process | Target |
| File created | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe | N/A |
| File opened for modification | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\assembly | C:\Users\Admin\AppData\Local\Temp\8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe | N/A |
| File created | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe | N/A |
| File opened for modification | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe | N/A |
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1156 wrote to memory of 4360 | N/A | C:\Users\Admin\AppData\Local\Temp\8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 1156 wrote to memory of 4360 | N/A | C:\Users\Admin\AppData\Local\Temp\8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 1156 wrote to memory of 4360 | N/A | C:\Users\Admin\AppData\Local\Temp\8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe
"C:\Users\Admin\AppData\Local\Temp\8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe"
C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 81.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 167.173.78.104.in-addr.arpa | udp |
| N/A | 127.0.0.1:10134 | tcp | |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| N/A | 127.0.0.1:10134 | tcp | |
| N/A | 127.0.0.1:10134 | tcp | |
| US | 8.8.8.8:53 | 56.163.245.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| N/A | 127.0.0.1:10134 | tcp | |
| N/A | 127.0.0.1:10134 | tcp | |
| N/A | 127.0.0.1:10134 | tcp | |
| N/A | 127.0.0.1:10134 | tcp | |
| N/A | 127.0.0.1:10134 | tcp | |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
| N/A | 127.0.0.1:10134 | tcp | |
| N/A | 127.0.0.1:10134 | tcp | |
| N/A | 127.0.0.1:10134 | tcp | |
| N/A | 127.0.0.1:10134 | tcp | |
| N/A | 127.0.0.1:10134 | tcp |
Files
memory/1156-0-0x0000000075582000-0x0000000075583000-memory.dmp
memory/1156-1-0x0000000075580000-0x0000000075B31000-memory.dmp
memory/1156-2-0x0000000075580000-0x0000000075B31000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
| MD5 | 0dcfd999de97c5a2547ffac4f17a9202 |
| SHA1 | e4c3b1f29ce47e4fb509c856302ed922998b66bb |
| SHA256 | 8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b |
| SHA512 | 04d01ea3afff1aa6e14a996e0e9c3a0a000eb849be82462c09115adb1ff2d403375bd7c97bf03522c145c2cdd087b17d87146c1ee6d5fbf3262bc0b7a1e8ad37 |
memory/1156-19-0x0000000075580000-0x0000000075B31000-memory.dmp
memory/4360-18-0x0000000075580000-0x0000000075B31000-memory.dmp
memory/4360-20-0x0000000075580000-0x0000000075B31000-memory.dmp
memory/4360-21-0x0000000075580000-0x0000000075B31000-memory.dmp
memory/4360-22-0x0000000075580000-0x0000000075B31000-memory.dmp