Analysis Overview
SHA256
40c4a1db022d73b058eac101c95cb86a60bc7379e5d2f8371e0e4bdba71404a5
Threat Level: Known bad
The file idk.exe was found to be: Known bad.
Malicious Activity Summary
Orcus
Orcus family
Executes dropped EXE
Checks computer location settings
Legitimate hosting services abused for malware hosting/C2
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 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
2025-01-12 01:06
Signatures
Orcus family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-01-12 01:06
Reported
2025-01-12 01:09
Platform
win10ltsc2021-20241211-en
Max time kernel
149s
Max time network
151s
Command Line
Signatures
Orcus
Orcus family
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2062871678-1047416116-518495306-1000\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 opened for modification | C:\Windows\assembly\Desktop.ini | 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 |
Legitimate hosting services abused for malware hosting/C2
| Description | Indicator | Process | Target |
| N/A | 4.tcp.eu.ngrok.io | N/A | N/A |
| N/A | 4.tcp.eu.ngrok.io | N/A | N/A |
| N/A | 4.tcp.eu.ngrok.io | N/A | 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 5084 wrote to memory of 1980 | N/A | C:\Users\Admin\AppData\Local\Temp\idk.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 5084 wrote to memory of 1980 | N/A | C:\Users\Admin\AppData\Local\Temp\idk.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 5084 wrote to memory of 1980 | 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 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 81.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 4.tcp.eu.ngrok.io | udp |
| DE | 35.158.159.254:18873 | 4.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 71.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 254.159.158.35.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| DE | 35.158.159.254:18873 | 4.tcp.eu.ngrok.io | tcp |
| DE | 35.158.159.254:18873 | 4.tcp.eu.ngrok.io | 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 |
| DE | 35.158.159.254:18873 | 4.tcp.eu.ngrok.io | tcp |
| DE | 35.158.159.254:18873 | 4.tcp.eu.ngrok.io | tcp |
| DE | 35.158.159.254:18873 | 4.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 73.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 4.tcp.eu.ngrok.io | udp |
| DE | 3.121.139.82:18873 | 4.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 82.139.121.3.in-addr.arpa | udp |
| DE | 3.121.139.82:18873 | 4.tcp.eu.ngrok.io | tcp |
| DE | 3.121.139.82:18873 | 4.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| DE | 3.121.139.82:18873 | 4.tcp.eu.ngrok.io | tcp |
| DE | 3.121.139.82:18873 | 4.tcp.eu.ngrok.io | tcp |
| DE | 3.121.139.82:18873 | 4.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 4.tcp.eu.ngrok.io | udp |
| DE | 52.28.112.211:18873 | 4.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 211.112.28.52.in-addr.arpa | udp |
| DE | 52.28.112.211:18873 | 4.tcp.eu.ngrok.io | tcp |
| DE | 52.28.112.211:18873 | 4.tcp.eu.ngrok.io | tcp |
Files
memory/5084-0-0x00000000753A2000-0x00000000753A3000-memory.dmp
memory/5084-1-0x00000000753A0000-0x0000000075951000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
| MD5 | bddc58491603cfa73dfba7979034f776 |
| SHA1 | ca7a5dab243f239aa6f821c36502ba09c1a260f3 |
| SHA256 | 40c4a1db022d73b058eac101c95cb86a60bc7379e5d2f8371e0e4bdba71404a5 |
| SHA512 | 1eaebb8b342650acb9fb7e7a572bd99405213db703bb41d23188a68f4c743669c3cd0668cee10074c37c7b4b6a4a65b7089dddcb3890917c7d0e99ec39d029b2 |
memory/5084-6-0x00000000753A0000-0x0000000075951000-memory.dmp
memory/1980-7-0x00000000753A0000-0x0000000075951000-memory.dmp
memory/1980-8-0x00000000753A0000-0x0000000075951000-memory.dmp
memory/1980-9-0x00000000753A0000-0x0000000075951000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-01-12 01:06
Reported
2025-01-12 01:09
Platform
win11-20241023-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 |
Legitimate hosting services abused for malware hosting/C2
| Description | Indicator | Process | Target |
| N/A | 4.tcp.eu.ngrok.io | N/A | N/A |
| N/A | 4.tcp.eu.ngrok.io | N/A | 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\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 2052 wrote to memory of 4916 | N/A | C:\Users\Admin\AppData\Local\Temp\idk.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 2052 wrote to memory of 4916 | N/A | C:\Users\Admin\AppData\Local\Temp\idk.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 2052 wrote to memory of 4916 | 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 | 4.tcp.eu.ngrok.io | udp |
| DE | 35.158.159.254:18873 | 4.tcp.eu.ngrok.io | tcp |
| DE | 35.158.159.254:18873 | 4.tcp.eu.ngrok.io | tcp |
| DE | 35.158.159.254:18873 | 4.tcp.eu.ngrok.io | tcp |
| DE | 35.158.159.254:18873 | 4.tcp.eu.ngrok.io | tcp |
| DE | 35.158.159.254:18873 | 4.tcp.eu.ngrok.io | tcp |
| DE | 35.158.159.254:18873 | 4.tcp.eu.ngrok.io | tcp |
| DE | 18.198.77.177:18873 | 4.tcp.eu.ngrok.io | tcp |
| DE | 18.198.77.177:18873 | 4.tcp.eu.ngrok.io | tcp |
| DE | 18.198.77.177:18873 | 4.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 23.236.111.52.in-addr.arpa | udp |
| DE | 18.198.77.177:18873 | 4.tcp.eu.ngrok.io | tcp |
| DE | 18.198.77.177:18873 | 4.tcp.eu.ngrok.io | tcp |
| DE | 18.198.77.177:18873 | 4.tcp.eu.ngrok.io | tcp |
| DE | 52.28.112.211:18873 | 4.tcp.eu.ngrok.io | tcp |
| DE | 52.28.112.211:18873 | 4.tcp.eu.ngrok.io | tcp |
| DE | 52.28.112.211:18873 | 4.tcp.eu.ngrok.io | tcp |
Files
memory/2052-0-0x0000000074631000-0x0000000074632000-memory.dmp
memory/2052-1-0x0000000074630000-0x0000000074BE1000-memory.dmp
memory/2052-2-0x0000000074630000-0x0000000074BE1000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
| MD5 | bddc58491603cfa73dfba7979034f776 |
| SHA1 | ca7a5dab243f239aa6f821c36502ba09c1a260f3 |
| SHA256 | 40c4a1db022d73b058eac101c95cb86a60bc7379e5d2f8371e0e4bdba71404a5 |
| SHA512 | 1eaebb8b342650acb9fb7e7a572bd99405213db703bb41d23188a68f4c743669c3cd0668cee10074c37c7b4b6a4a65b7089dddcb3890917c7d0e99ec39d029b2 |
memory/4916-19-0x0000000074630000-0x0000000074BE1000-memory.dmp
memory/2052-18-0x0000000074630000-0x0000000074BE1000-memory.dmp
memory/4916-21-0x0000000074630000-0x0000000074BE1000-memory.dmp
memory/4916-20-0x0000000074630000-0x0000000074BE1000-memory.dmp
memory/4916-22-0x0000000074630000-0x0000000074BE1000-memory.dmp