Analysis Overview
SHA256
b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f
Threat Level: Known bad
The file b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f was found to be: Known bad.
Malicious Activity Summary
Orcus
Orcus family
Loads dropped DLL
Executes dropped EXE
Checks computer location settings
Unsigned PE
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of FindShellTrayWindow
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-27 01:22
Signatures
Orcus family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-27 01:22
Reported
2024-11-27 01:25
Platform
win7-20240903-en
Max time kernel
147s
Max time network
151s
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\b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f.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\b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f.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 3024 wrote to memory of 2748 | N/A | C:\Users\Admin\AppData\Local\Temp\b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 3024 wrote to memory of 2748 | N/A | C:\Users\Admin\AppData\Local\Temp\b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 3024 wrote to memory of 2748 | N/A | C:\Users\Admin\AppData\Local\Temp\b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 3024 wrote to memory of 2748 | N/A | C:\Users\Admin\AppData\Local\Temp\b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f.exe
"C:\Users\Admin\AppData\Local\Temp\b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f.exe"
C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe"
Network
| Country | Destination | Domain | Proto |
| SG | 157.245.148.149:10134 | tcp | |
| SG | 157.245.148.149:10134 | tcp | |
| SG | 157.245.148.149:10134 | tcp | |
| SG | 157.245.148.149:10134 | tcp | |
| SG | 157.245.148.149:10134 | tcp | |
| SG | 157.245.148.149:10134 | tcp | |
| SG | 157.245.148.149:10134 | tcp | |
| SG | 157.245.148.149:10134 | tcp | |
| SG | 157.245.148.149:10134 | tcp | |
| SG | 157.245.148.149:10134 | tcp | |
| SG | 157.245.148.149:10134 | tcp | |
| SG | 157.245.148.149:10134 | tcp | |
| SG | 157.245.148.149:10134 | tcp |
Files
memory/3024-0-0x000000007469E000-0x000000007469F000-memory.dmp
memory/3024-1-0x0000000000C70000-0x0000000000D48000-memory.dmp
memory/3024-2-0x0000000000320000-0x000000000032A000-memory.dmp
memory/3024-3-0x0000000074690000-0x0000000074D7E000-memory.dmp
memory/3024-4-0x0000000000A00000-0x0000000000A4C000-memory.dmp
memory/3024-7-0x0000000000D50000-0x0000000000D9E000-memory.dmp
\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
| MD5 | 56a5bd1af43f7dafd36f07bcd326f38f |
| SHA1 | 95658d034db1988a810a90279cf040bd64e47b23 |
| SHA256 | b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f |
| SHA512 | 81a3ff8e73cd8e96aa3aa1c32969ff5bd953a99f811074d26682506e02f545f3ece338a125c381c9ec3ccc7e38d4814d5ffb26c6c994792fa9b4f3a2b234e9bc |
memory/2748-14-0x0000000074690000-0x0000000074D7E000-memory.dmp
memory/2748-15-0x0000000000150000-0x0000000000228000-memory.dmp
memory/3024-16-0x0000000074690000-0x0000000074D7E000-memory.dmp
memory/2748-17-0x0000000074690000-0x0000000074D7E000-memory.dmp
memory/2748-18-0x0000000002120000-0x0000000002130000-memory.dmp
memory/2748-19-0x0000000074690000-0x0000000074D7E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-27 01:22
Reported
2024-11-27 01:25
Platform
win10v2004-20241007-en
Max time kernel
150s
Max time network
151s
Command Line
Signatures
Orcus
Orcus family
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f.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 |
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\b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f.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 3992 wrote to memory of 4000 | N/A | C:\Users\Admin\AppData\Local\Temp\b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 3992 wrote to memory of 4000 | N/A | C:\Users\Admin\AppData\Local\Temp\b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 3992 wrote to memory of 4000 | N/A | C:\Users\Admin\AppData\Local\Temp\b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f.exe
"C:\Users\Admin\AppData\Local\Temp\b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f.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 | 241.150.49.20.in-addr.arpa | udp |
| SG | 157.245.148.149:10134 | tcp | |
| US | 8.8.8.8:53 | 88.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 72.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| SG | 157.245.148.149:10134 | tcp | |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| SG | 157.245.148.149:10134 | tcp | |
| US | 8.8.8.8:53 | 197.87.175.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| SG | 157.245.148.149:10134 | tcp | |
| SG | 157.245.148.149:10134 | tcp | |
| SG | 157.245.148.149:10134 | tcp | |
| SG | 157.245.148.149:10134 | tcp | |
| US | 8.8.8.8:53 | 74.209.201.84.in-addr.arpa | udp |
| SG | 157.245.148.149:10134 | tcp | |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
| SG | 157.245.148.149:10134 | tcp | |
| SG | 157.245.148.149:10134 | tcp | |
| SG | 157.245.148.149:10134 | tcp | |
| SG | 157.245.148.149:10134 | tcp | |
| US | 8.8.8.8:53 | 171.117.168.52.in-addr.arpa | udp |
Files
memory/3992-0-0x0000000074DFE000-0x0000000074DFF000-memory.dmp
memory/3992-1-0x0000000000C30000-0x0000000000D08000-memory.dmp
memory/3992-2-0x0000000003010000-0x000000000301A000-memory.dmp
memory/3992-3-0x0000000074DF0000-0x00000000755A0000-memory.dmp
memory/3992-4-0x0000000005D10000-0x00000000062B4000-memory.dmp
memory/3992-5-0x0000000005B80000-0x0000000005C12000-memory.dmp
memory/3992-6-0x0000000005AE0000-0x0000000005B2C000-memory.dmp
memory/3992-9-0x0000000005C20000-0x0000000005C6E000-memory.dmp
memory/3992-10-0x0000000005CA0000-0x0000000005CB8000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
| MD5 | 56a5bd1af43f7dafd36f07bcd326f38f |
| SHA1 | 95658d034db1988a810a90279cf040bd64e47b23 |
| SHA256 | b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f |
| SHA512 | 81a3ff8e73cd8e96aa3aa1c32969ff5bd953a99f811074d26682506e02f545f3ece338a125c381c9ec3ccc7e38d4814d5ffb26c6c994792fa9b4f3a2b234e9bc |
memory/3992-23-0x0000000074DF0000-0x00000000755A0000-memory.dmp
memory/4000-22-0x0000000074DF0000-0x00000000755A0000-memory.dmp
memory/4000-24-0x0000000074DF0000-0x00000000755A0000-memory.dmp
memory/4000-25-0x0000000005470000-0x0000000005488000-memory.dmp
memory/4000-26-0x0000000005CD0000-0x0000000005E92000-memory.dmp
memory/4000-27-0x0000000005530000-0x0000000005540000-memory.dmp
memory/4000-28-0x0000000006210000-0x000000000621A000-memory.dmp
memory/4000-29-0x0000000074DF0000-0x00000000755A0000-memory.dmp