Analysis Overview
SHA256
c9cad5e9456b15ba20ba8e45ea72a75c5496928d9cb5614482c43979d0882459
Threat Level: Known bad
The file sigma rizzler.exe was found to be: Known bad.
Malicious Activity Summary
Orcus family
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Drops desktop.ini file(s)
Drops file in Windows directory
Unsigned PE
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of FindShellTrayWindow
Suspicious behavior: EnumeratesProcesses
Suspicious use of SendNotifyMessage
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-26 18:48
Signatures
Orcus family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-26 18:48
Reported
2024-11-26 18:51
Platform
win10v2004-20241007-en
Max time kernel
148s
Max time network
150s
Command Line
Signatures
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\sigma rizzler.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\sigma rizzler.exe | N/A |
| File opened for modification | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\sigma rizzler.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\sigma rizzler.exe | N/A |
| File created | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\sigma rizzler.exe | N/A |
| File opened for modification | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\sigma rizzler.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\sigma rizzler.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 4524 wrote to memory of 440 | N/A | C:\Users\Admin\AppData\Local\Temp\sigma rizzler.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 4524 wrote to memory of 440 | N/A | C:\Users\Admin\AppData\Local\Temp\sigma rizzler.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 4524 wrote to memory of 440 | N/A | C:\Users\Admin\AppData\Local\Temp\sigma rizzler.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\sigma rizzler.exe
"C:\Users\Admin\AppData\Local\Temp\sigma rizzler.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 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 83.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 75.159.190.20.in-addr.arpa | udp |
| N/A | 192.168.0.122:1234 | tcp | |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| N/A | 192.168.0.122:1234 | tcp | |
| N/A | 192.168.0.122:1234 | tcp | |
| US | 8.8.8.8:53 | 56.163.245.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| N/A | 192.168.0.122:1234 | tcp | |
| N/A | 192.168.0.122:1234 | tcp | |
| N/A | 192.168.0.122:1234 | tcp | |
| N/A | 192.168.0.122:1234 | tcp | |
| N/A | 192.168.0.122:1234 | tcp | |
| US | 8.8.8.8:53 | 48.229.111.52.in-addr.arpa | udp |
| N/A | 192.168.0.122:1234 | tcp | |
| N/A | 192.168.0.122:1234 | tcp | |
| N/A | 192.168.0.122:1234 | tcp | |
| N/A | 192.168.0.122:1234 | tcp |
Files
memory/4524-0-0x0000000075592000-0x0000000075593000-memory.dmp
memory/4524-1-0x0000000075590000-0x0000000075B41000-memory.dmp
memory/4524-2-0x0000000075590000-0x0000000075B41000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
| MD5 | 40c7a4426aedab088a4704c699caf3a4 |
| SHA1 | 558dcd92d48d4827d9ae252f5cccc5377cb78efd |
| SHA256 | c9cad5e9456b15ba20ba8e45ea72a75c5496928d9cb5614482c43979d0882459 |
| SHA512 | c5bfca766cbd7858798fc9f14f1a16789f64864ba380c7a61b830812753da92ff2463dd0a22f054a85c4166a96a0068286dee2bb640bf24c9572a2b6d3d48218 |
memory/4524-18-0x0000000075590000-0x0000000075B41000-memory.dmp
memory/440-19-0x0000000075590000-0x0000000075B41000-memory.dmp
memory/440-20-0x0000000075590000-0x0000000075B41000-memory.dmp
memory/440-21-0x0000000075590000-0x0000000075B41000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-26 18:48
Reported
2024-11-26 18:51
Platform
win7-20240708-en
Max time kernel
146s
Max time network
150s
Command Line
Signatures
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\sigma rizzler.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\sigma rizzler.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 2356 wrote to memory of 2340 | N/A | C:\Users\Admin\AppData\Local\Temp\sigma rizzler.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 2356 wrote to memory of 2340 | N/A | C:\Users\Admin\AppData\Local\Temp\sigma rizzler.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 2356 wrote to memory of 2340 | N/A | C:\Users\Admin\AppData\Local\Temp\sigma rizzler.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 2356 wrote to memory of 2340 | N/A | C:\Users\Admin\AppData\Local\Temp\sigma rizzler.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\sigma rizzler.exe
"C:\Users\Admin\AppData\Local\Temp\sigma rizzler.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 | 192.168.0.122:1234 | tcp | |
| N/A | 192.168.0.122:1234 | tcp | |
| N/A | 192.168.0.122:1234 | tcp | |
| N/A | 192.168.0.122:1234 | tcp | |
| N/A | 192.168.0.122:1234 | tcp | |
| N/A | 192.168.0.122:1234 | tcp | |
| N/A | 192.168.0.122:1234 | tcp | |
| N/A | 192.168.0.122:1234 | tcp | |
| N/A | 192.168.0.122:1234 | tcp | |
| N/A | 192.168.0.122:1234 | tcp | |
| N/A | 192.168.0.122:1234 | tcp | |
| N/A | 192.168.0.122:1234 | tcp |
Files
memory/2356-0-0x0000000074AF1000-0x0000000074AF2000-memory.dmp
memory/2356-1-0x0000000074AF0000-0x000000007509B000-memory.dmp
memory/2356-2-0x0000000074AF0000-0x000000007509B000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
| MD5 | 40c7a4426aedab088a4704c699caf3a4 |
| SHA1 | 558dcd92d48d4827d9ae252f5cccc5377cb78efd |
| SHA256 | c9cad5e9456b15ba20ba8e45ea72a75c5496928d9cb5614482c43979d0882459 |
| SHA512 | c5bfca766cbd7858798fc9f14f1a16789f64864ba380c7a61b830812753da92ff2463dd0a22f054a85c4166a96a0068286dee2bb640bf24c9572a2b6d3d48218 |
memory/2356-11-0x0000000074AF0000-0x000000007509B000-memory.dmp
memory/2340-12-0x0000000074AF0000-0x000000007509B000-memory.dmp
memory/2340-14-0x0000000074AF0000-0x000000007509B000-memory.dmp
memory/2340-13-0x0000000074AF0000-0x000000007509B000-memory.dmp
memory/2340-15-0x0000000074AF0000-0x000000007509B000-memory.dmp
memory/2340-16-0x0000000074AF0000-0x000000007509B000-memory.dmp