Analysis Overview
SHA256
e76c87875d3ac87a70049cc60278270c6dd00f80bc4129d3fc26d208a6d99bfe
Threat Level: Known bad
The file idk.exe was found to be: Known bad.
Malicious Activity Summary
Orcus family
Orcus
Checks computer location settings
Executes dropped EXE
Drops desktop.ini file(s)
Drops file in Windows directory
System Location Discovery: System Language Discovery
Enumerates physical storage devices
Unsigned PE
Suspicious use of SendNotifyMessage
Suspicious use of FindShellTrayWindow
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2025-01-10 21:15
Signatures
Orcus family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-01-10 21:15
Reported
2025-01-10 21:18
Platform
win10ltsc2021-20241211-en
Max time kernel
144s
Max time network
140s
Command Line
Signatures
Orcus
Orcus family
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2062871678-1047416116-518495306-1000\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\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\idk.exe | N/A |
| 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 |
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\idk.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 856 wrote to memory of 724 | N/A | C:\Users\Admin\AppData\Local\Temp\idk.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 856 wrote to memory of 724 | N/A | C:\Users\Admin\AppData\Local\Temp\idk.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 856 wrote to memory of 724 | 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 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.49.80.91.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.159.190.20.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 |
| US | 8.8.8.8:53 | fd.api.iris.microsoft.com | udp |
| FR | 20.199.58.43:443 | fd.api.iris.microsoft.com | tcp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 182.129.81.91.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 48.229.111.52.in-addr.arpa | udp |
Files
memory/856-0-0x0000000074B42000-0x0000000074B43000-memory.dmp
memory/856-1-0x0000000074B40000-0x00000000750F1000-memory.dmp
memory/856-2-0x0000000074B40000-0x00000000750F1000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
| MD5 | 1cf7cbdb2e039ba544f3cd225b76efb9 |
| SHA1 | c46ed5117c0f28ff019b3da9182d8940ba187b3b |
| SHA256 | e76c87875d3ac87a70049cc60278270c6dd00f80bc4129d3fc26d208a6d99bfe |
| SHA512 | fb5c55daedf44f04114a28443b3fad02b97f54e06d16d8381b2ea55857672d280b0941d89100a10e72c3f162669738f0b21ba91bc5507b8966a23f4557c9e54b |
memory/856-8-0x0000000074B40000-0x00000000750F1000-memory.dmp
memory/724-9-0x0000000074B40000-0x00000000750F1000-memory.dmp
memory/724-10-0x0000000074B40000-0x00000000750F1000-memory.dmp
memory/724-7-0x0000000074B40000-0x00000000750F1000-memory.dmp
memory/724-11-0x0000000074B40000-0x00000000750F1000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-01-10 21:15
Reported
2025-01-10 21:18
Platform
win11-20241007-en
Max time kernel
147s
Max time network
151s
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 |
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 3608 wrote to memory of 3680 | N/A | C:\Users\Admin\AppData\Local\Temp\idk.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 3608 wrote to memory of 3680 | N/A | C:\Users\Admin\AppData\Local\Temp\idk.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 3608 wrote to memory of 3680 | 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 | 22.236.111.52.in-addr.arpa | udp |
Files
memory/3608-0-0x0000000075311000-0x0000000075312000-memory.dmp
memory/3608-1-0x0000000075310000-0x00000000758C1000-memory.dmp
memory/3608-2-0x0000000075310000-0x00000000758C1000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
| MD5 | 1cf7cbdb2e039ba544f3cd225b76efb9 |
| SHA1 | c46ed5117c0f28ff019b3da9182d8940ba187b3b |
| SHA256 | e76c87875d3ac87a70049cc60278270c6dd00f80bc4129d3fc26d208a6d99bfe |
| SHA512 | fb5c55daedf44f04114a28443b3fad02b97f54e06d16d8381b2ea55857672d280b0941d89100a10e72c3f162669738f0b21ba91bc5507b8966a23f4557c9e54b |
memory/3680-19-0x0000000075310000-0x00000000758C1000-memory.dmp
memory/3608-18-0x0000000075310000-0x00000000758C1000-memory.dmp
memory/3680-20-0x0000000075310000-0x00000000758C1000-memory.dmp
memory/3680-21-0x0000000075310000-0x00000000758C1000-memory.dmp
memory/3680-22-0x0000000075310000-0x00000000758C1000-memory.dmp