Analysis Overview
SHA256
b3368bbd2146f02b1203d743fa70a0cb890bb9fed80086cedcef28be6ba155c1
Threat Level: Known bad
The file b3368bbd2146f02b1203d743fa70a0cb890bb9fed80086cedcef28be6ba155c1 was found to be: Known bad.
Malicious Activity Summary
Orcus family
Orcus
Executes dropped EXE
Checks computer location settings
Loads dropped DLL
Drops desktop.ini file(s)
Drops file in Windows directory
Enumerates physical storage devices
Unsigned PE
System Location Discovery: System Language Discovery
Suspicious use of WriteProcessMemory
Suspicious use of FindShellTrayWindow
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-12-14 01:18
Signatures
Orcus family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-12-14 01:18
Reported
2024-12-14 01:20
Platform
win7-20241023-en
Max time kernel
147s
Max time network
147s
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\b3368bbd2146f02b1203d743fa70a0cb890bb9fed80086cedcef28be6ba155c1.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\Roaming\Microsoft\Speech\AudioDriver.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\b3368bbd2146f02b1203d743fa70a0cb890bb9fed80086cedcef28be6ba155c1.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 SetWindowsHookEx
| 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 692 wrote to memory of 268 | N/A | C:\Users\Admin\AppData\Local\Temp\b3368bbd2146f02b1203d743fa70a0cb890bb9fed80086cedcef28be6ba155c1.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 692 wrote to memory of 268 | N/A | C:\Users\Admin\AppData\Local\Temp\b3368bbd2146f02b1203d743fa70a0cb890bb9fed80086cedcef28be6ba155c1.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 692 wrote to memory of 268 | N/A | C:\Users\Admin\AppData\Local\Temp\b3368bbd2146f02b1203d743fa70a0cb890bb9fed80086cedcef28be6ba155c1.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 692 wrote to memory of 268 | N/A | C:\Users\Admin\AppData\Local\Temp\b3368bbd2146f02b1203d743fa70a0cb890bb9fed80086cedcef28be6ba155c1.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\b3368bbd2146f02b1203d743fa70a0cb890bb9fed80086cedcef28be6ba155c1.exe
"C:\Users\Admin\AppData\Local\Temp\b3368bbd2146f02b1203d743fa70a0cb890bb9fed80086cedcef28be6ba155c1.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 | 172.27.79.37:10134 | tcp | |
| N/A | 172.27.79.37:10134 | tcp | |
| N/A | 172.27.79.37:10134 | tcp | |
| N/A | 172.27.79.37:10134 | tcp | |
| N/A | 172.27.79.37:10134 | tcp | |
| N/A | 172.27.79.37:10134 | tcp | |
| N/A | 172.27.79.37:10134 | tcp | |
| N/A | 172.27.79.37:10134 | tcp | |
| N/A | 172.27.79.37:10134 | tcp | |
| N/A | 172.27.79.37:10134 | tcp | |
| N/A | 172.27.79.37:10134 | tcp | |
| N/A | 172.27.79.37:10134 | tcp |
Files
memory/692-0-0x0000000074481000-0x0000000074482000-memory.dmp
memory/692-1-0x0000000074480000-0x0000000074A2B000-memory.dmp
memory/692-2-0x0000000074480000-0x0000000074A2B000-memory.dmp
\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
| MD5 | 6546eb6df97390317bd8254abc7bb5d4 |
| SHA1 | 4e2ae2993226821804afefbd65e4b350f4b0c841 |
| SHA256 | b3368bbd2146f02b1203d743fa70a0cb890bb9fed80086cedcef28be6ba155c1 |
| SHA512 | 1dfc4e5d7b5e0d687f55c90a6e20a683646109a0e59d4f13b6b28331b16eea094199818930e4805c8360359f3a3a8b7e7452b322fede5c9c4860351999129f2c |
memory/268-12-0x0000000074480000-0x0000000074A2B000-memory.dmp
memory/692-11-0x0000000074480000-0x0000000074A2B000-memory.dmp
memory/268-13-0x0000000074480000-0x0000000074A2B000-memory.dmp
memory/268-14-0x0000000074480000-0x0000000074A2B000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-12-14 01:18
Reported
2024-12-14 01:20
Platform
win10v2004-20241007-en
Max time kernel
149s
Max time network
150s
Command Line
Signatures
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\b3368bbd2146f02b1203d743fa70a0cb890bb9fed80086cedcef28be6ba155c1.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\b3368bbd2146f02b1203d743fa70a0cb890bb9fed80086cedcef28be6ba155c1.exe | N/A |
| File opened for modification | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\b3368bbd2146f02b1203d743fa70a0cb890bb9fed80086cedcef28be6ba155c1.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\b3368bbd2146f02b1203d743fa70a0cb890bb9fed80086cedcef28be6ba155c1.exe | N/A |
| File created | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\b3368bbd2146f02b1203d743fa70a0cb890bb9fed80086cedcef28be6ba155c1.exe | N/A |
| File opened for modification | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\b3368bbd2146f02b1203d743fa70a0cb890bb9fed80086cedcef28be6ba155c1.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\b3368bbd2146f02b1203d743fa70a0cb890bb9fed80086cedcef28be6ba155c1.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 SetWindowsHookEx
| 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 1956 wrote to memory of 3520 | N/A | C:\Users\Admin\AppData\Local\Temp\b3368bbd2146f02b1203d743fa70a0cb890bb9fed80086cedcef28be6ba155c1.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 1956 wrote to memory of 3520 | N/A | C:\Users\Admin\AppData\Local\Temp\b3368bbd2146f02b1203d743fa70a0cb890bb9fed80086cedcef28be6ba155c1.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 1956 wrote to memory of 3520 | N/A | C:\Users\Admin\AppData\Local\Temp\b3368bbd2146f02b1203d743fa70a0cb890bb9fed80086cedcef28be6ba155c1.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\b3368bbd2146f02b1203d743fa70a0cb890bb9fed80086cedcef28be6ba155c1.exe
"C:\Users\Admin\AppData\Local\Temp\b3368bbd2146f02b1203d743fa70a0cb890bb9fed80086cedcef28be6ba155c1.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 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| N/A | 172.27.79.37:10134 | tcp | |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| N/A | 172.27.79.37:10134 | tcp | |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| N/A | 172.27.79.37:10134 | tcp | |
| US | 8.8.8.8:53 | 212.20.149.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 107.12.20.2.in-addr.arpa | udp |
| N/A | 172.27.79.37:10134 | tcp | |
| N/A | 172.27.79.37:10134 | tcp | |
| N/A | 172.27.79.37:10134 | tcp | |
| N/A | 172.27.79.37:10134 | tcp | |
| N/A | 172.27.79.37:10134 | tcp | |
| US | 8.8.8.8:53 | 29.243.111.52.in-addr.arpa | udp |
| N/A | 172.27.79.37:10134 | tcp | |
| N/A | 172.27.79.37:10134 | tcp | |
| N/A | 172.27.79.37:10134 | tcp | |
| N/A | 172.27.79.37:10134 | tcp |
Files
memory/1956-0-0x0000000074AD2000-0x0000000074AD3000-memory.dmp
memory/1956-1-0x0000000074AD0000-0x0000000075081000-memory.dmp
memory/1956-2-0x0000000074AD0000-0x0000000075081000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
| MD5 | 6546eb6df97390317bd8254abc7bb5d4 |
| SHA1 | 4e2ae2993226821804afefbd65e4b350f4b0c841 |
| SHA256 | b3368bbd2146f02b1203d743fa70a0cb890bb9fed80086cedcef28be6ba155c1 |
| SHA512 | 1dfc4e5d7b5e0d687f55c90a6e20a683646109a0e59d4f13b6b28331b16eea094199818930e4805c8360359f3a3a8b7e7452b322fede5c9c4860351999129f2c |
memory/1956-18-0x0000000074AD0000-0x0000000075081000-memory.dmp
memory/3520-19-0x0000000074AD0000-0x0000000075081000-memory.dmp
memory/3520-20-0x0000000074AD0000-0x0000000075081000-memory.dmp
memory/3520-21-0x0000000074AD0000-0x0000000075081000-memory.dmp
memory/3520-22-0x0000000074AD0000-0x0000000075081000-memory.dmp
memory/3520-23-0x0000000074AD0000-0x0000000075081000-memory.dmp