Analysis Overview
SHA256
cedc75de765783038eed29e50b78f3be3b846e2ad8fdf591880072a9dd91d17a
Threat Level: Known bad
The file idk.exe was found to be: Known bad.
Malicious Activity Summary
Orcus
Orcus family
Executes dropped EXE
Loads dropped DLL
Checks computer location settings
Drops desktop.ini file(s)
Drops file in Windows directory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Unsigned PE
Suspicious use of WriteProcessMemory
Suspicious use of SendNotifyMessage
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-28 22:47
Signatures
Orcus family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-28 22:47
Reported
2024-11-28 22:50
Platform
win7-20240708-en
Max time kernel
148s
Max time network
149s
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\idk.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\idk.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 1452 wrote to memory of 1372 | N/A | C:\Users\Admin\AppData\Local\Temp\idk.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 1452 wrote to memory of 1372 | N/A | C:\Users\Admin\AppData\Local\Temp\idk.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 1452 wrote to memory of 1372 | N/A | C:\Users\Admin\AppData\Local\Temp\idk.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 1452 wrote to memory of 1372 | N/A | C:\Users\Admin\AppData\Local\Temp\idk.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\idk.exe
"C:\Users\Admin\AppData\Local\Temp\idk.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/1452-0-0x00000000743B1000-0x00000000743B2000-memory.dmp
memory/1452-1-0x00000000743B0000-0x000000007495B000-memory.dmp
memory/1452-2-0x00000000743B0000-0x000000007495B000-memory.dmp
\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
| MD5 | 605d73e9bf77ed652af072176bc1be67 |
| SHA1 | 063f50dee4ef0ada0aa8b67cba1b2098f97ecd97 |
| SHA256 | cedc75de765783038eed29e50b78f3be3b846e2ad8fdf591880072a9dd91d17a |
| SHA512 | 732c5fe970994a9bbfdcedcc6bf2c6d7827beefe84ebd9f81a0b84d29ca26dd559c2210260aac9276d26c43fa9c9ca445b266de2f4f33a09d70199a94164d07f |
memory/1452-10-0x00000000743B0000-0x000000007495B000-memory.dmp
memory/1372-12-0x00000000743B0000-0x000000007495B000-memory.dmp
memory/1372-13-0x00000000743B0000-0x000000007495B000-memory.dmp
memory/1372-14-0x00000000743B0000-0x000000007495B000-memory.dmp
memory/1372-15-0x00000000743B0000-0x000000007495B000-memory.dmp
memory/1372-16-0x00000000743B0000-0x000000007495B000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-28 22:47
Reported
2024-11-28 22:50
Platform
win10v2004-20241007-en
Max time kernel
147s
Max time network
149s
Command Line
Signatures
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\idk.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\idk.exe | N/A |
| File opened for modification | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\idk.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\idk.exe | N/A |
| File created | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\idk.exe | N/A |
| File opened for modification | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\idk.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\idk.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 3920 wrote to memory of 2092 | N/A | C:\Users\Admin\AppData\Local\Temp\idk.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 3920 wrote to memory of 2092 | N/A | C:\Users\Admin\AppData\Local\Temp\idk.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 3920 wrote to memory of 2092 | N/A | C:\Users\Admin\AppData\Local\Temp\idk.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\idk.exe
"C:\Users\Admin\AppData\Local\Temp\idk.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 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.210.23.2.in-addr.arpa | udp |
| N/A | 192.168.0.122:1234 | tcp | |
| US | 8.8.8.8:53 | 64.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.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 | 53.210.109.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.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 | |
| US | 8.8.8.8:53 | 19.229.111.52.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 | |
| N/A | 192.168.0.122:1234 | tcp |
Files
memory/3920-0-0x0000000074742000-0x0000000074743000-memory.dmp
memory/3920-1-0x0000000074740000-0x0000000074CF1000-memory.dmp
memory/3920-2-0x0000000074740000-0x0000000074CF1000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
| MD5 | 605d73e9bf77ed652af072176bc1be67 |
| SHA1 | 063f50dee4ef0ada0aa8b67cba1b2098f97ecd97 |
| SHA256 | cedc75de765783038eed29e50b78f3be3b846e2ad8fdf591880072a9dd91d17a |
| SHA512 | 732c5fe970994a9bbfdcedcc6bf2c6d7827beefe84ebd9f81a0b84d29ca26dd559c2210260aac9276d26c43fa9c9ca445b266de2f4f33a09d70199a94164d07f |
memory/3920-18-0x0000000074740000-0x0000000074CF1000-memory.dmp
memory/2092-19-0x0000000074740000-0x0000000074CF1000-memory.dmp
memory/2092-21-0x0000000074740000-0x0000000074CF1000-memory.dmp
memory/2092-20-0x0000000074740000-0x0000000074CF1000-memory.dmp
memory/2092-22-0x0000000074740000-0x0000000074CF1000-memory.dmp