Analysis Overview
SHA256
138b682d76b3ec1a4a84406c3f6a0ee2da29bec0ae6feb6c05f7b6c8eb98b96f
Threat Level: Known bad
The file 138b682d76b3ec1a4a84406c3f6a0ee2da29bec0ae6feb6c05f7b6c8eb98b96f was found to be: Known bad.
Malicious Activity Summary
Orcus family
Orcus
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Legitimate hosting services abused for malware hosting/C2
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 FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2025-01-17 01:28
Signatures
Orcus family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-01-17 01:28
Reported
2025-01-17 01:30
Platform
win7-20240903-en
Max time kernel
149s
Max time network
150s
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\138b682d76b3ec1a4a84406c3f6a0ee2da29bec0ae6feb6c05f7b6c8eb98b96f.exe | N/A |
Legitimate hosting services abused for malware hosting/C2
| Description | Indicator | Process | Target |
| N/A | 5.tcp.eu.ngrok.io | N/A | N/A |
| N/A | 5.tcp.eu.ngrok.io | N/A | N/A |
| N/A | 5.tcp.eu.ngrok.io | N/A | N/A |
| N/A | 5.tcp.eu.ngrok.io | N/A | N/A |
| N/A | 5.tcp.eu.ngrok.io | N/A | 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\138b682d76b3ec1a4a84406c3f6a0ee2da29bec0ae6feb6c05f7b6c8eb98b96f.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 1836 wrote to memory of 588 | N/A | C:\Users\Admin\AppData\Local\Temp\138b682d76b3ec1a4a84406c3f6a0ee2da29bec0ae6feb6c05f7b6c8eb98b96f.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 1836 wrote to memory of 588 | N/A | C:\Users\Admin\AppData\Local\Temp\138b682d76b3ec1a4a84406c3f6a0ee2da29bec0ae6feb6c05f7b6c8eb98b96f.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 1836 wrote to memory of 588 | N/A | C:\Users\Admin\AppData\Local\Temp\138b682d76b3ec1a4a84406c3f6a0ee2da29bec0ae6feb6c05f7b6c8eb98b96f.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 1836 wrote to memory of 588 | N/A | C:\Users\Admin\AppData\Local\Temp\138b682d76b3ec1a4a84406c3f6a0ee2da29bec0ae6feb6c05f7b6c8eb98b96f.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\138b682d76b3ec1a4a84406c3f6a0ee2da29bec0ae6feb6c05f7b6c8eb98b96f.exe
"C:\Users\Admin\AppData\Local\Temp\138b682d76b3ec1a4a84406c3f6a0ee2da29bec0ae6feb6c05f7b6c8eb98b96f.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 | 5.tcp.eu.ngrok.io | udp |
| DE | 3.67.62.142:14816 | 5.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 5.tcp.eu.ngrok.io | udp |
| DE | 3.67.112.102:14816 | 5.tcp.eu.ngrok.io | tcp |
| DE | 3.67.112.102:14816 | 5.tcp.eu.ngrok.io | tcp |
| DE | 3.67.112.102:14816 | 5.tcp.eu.ngrok.io | tcp |
| DE | 3.67.112.102:14816 | 5.tcp.eu.ngrok.io | tcp |
| DE | 3.67.112.102:14816 | 5.tcp.eu.ngrok.io | tcp |
| DE | 3.67.112.102:14816 | 5.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 5.tcp.eu.ngrok.io | udp |
| DE | 3.64.4.198:14816 | 5.tcp.eu.ngrok.io | tcp |
| DE | 3.64.4.198:14816 | 5.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 5.tcp.eu.ngrok.io | udp |
| DE | 3.67.161.133:14816 | 5.tcp.eu.ngrok.io | tcp |
| DE | 3.67.161.133:14816 | 5.tcp.eu.ngrok.io | tcp |
| DE | 3.67.161.133:14816 | 5.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 5.tcp.eu.ngrok.io | udp |
| DE | 3.67.112.102:14816 | 5.tcp.eu.ngrok.io | tcp |
| DE | 3.67.112.102:14816 | 5.tcp.eu.ngrok.io | tcp |
Files
memory/588-14-0x0000000074240000-0x00000000747EB000-memory.dmp
memory/588-13-0x0000000074240000-0x00000000747EB000-memory.dmp
memory/588-12-0x0000000074240000-0x00000000747EB000-memory.dmp
memory/1836-11-0x0000000074240000-0x00000000747EB000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
| MD5 | 87763ae22a66ea3276fe9b14d65725ea |
| SHA1 | 908228d0bba0351a4c4bf25ab4ae2b41ed520f7d |
| SHA256 | 138b682d76b3ec1a4a84406c3f6a0ee2da29bec0ae6feb6c05f7b6c8eb98b96f |
| SHA512 | fdf7ba8ebc84b8cb9e3fdaf34d5c035d3456cdc671a6cf0ea1774dc73f4931d95fcdbf25605991028f5236097af6484e2aa9679baf580c15ea982e14f31f30e4 |
memory/1836-2-0x0000000074240000-0x00000000747EB000-memory.dmp
memory/1836-1-0x0000000074240000-0x00000000747EB000-memory.dmp
memory/1836-0-0x0000000074241000-0x0000000074242000-memory.dmp
memory/588-15-0x0000000074240000-0x00000000747EB000-memory.dmp
memory/588-16-0x0000000074240000-0x00000000747EB000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-01-17 01:28
Reported
2025-01-17 01:30
Platform
win10v2004-20241007-en
Max time kernel
142s
Max time network
149s
Command Line
Signatures
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\138b682d76b3ec1a4a84406c3f6a0ee2da29bec0ae6feb6c05f7b6c8eb98b96f.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\138b682d76b3ec1a4a84406c3f6a0ee2da29bec0ae6feb6c05f7b6c8eb98b96f.exe | N/A |
| File opened for modification | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\138b682d76b3ec1a4a84406c3f6a0ee2da29bec0ae6feb6c05f7b6c8eb98b96f.exe | N/A |
Legitimate hosting services abused for malware hosting/C2
| Description | Indicator | Process | Target |
| N/A | 5.tcp.eu.ngrok.io | N/A | N/A |
| N/A | 5.tcp.eu.ngrok.io | N/A | N/A |
| N/A | 5.tcp.eu.ngrok.io | N/A | N/A |
| N/A | 5.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\138b682d76b3ec1a4a84406c3f6a0ee2da29bec0ae6feb6c05f7b6c8eb98b96f.exe | N/A |
| File created | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\138b682d76b3ec1a4a84406c3f6a0ee2da29bec0ae6feb6c05f7b6c8eb98b96f.exe | N/A |
| File opened for modification | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\138b682d76b3ec1a4a84406c3f6a0ee2da29bec0ae6feb6c05f7b6c8eb98b96f.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\138b682d76b3ec1a4a84406c3f6a0ee2da29bec0ae6feb6c05f7b6c8eb98b96f.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 3668 wrote to memory of 1856 | N/A | C:\Users\Admin\AppData\Local\Temp\138b682d76b3ec1a4a84406c3f6a0ee2da29bec0ae6feb6c05f7b6c8eb98b96f.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 3668 wrote to memory of 1856 | N/A | C:\Users\Admin\AppData\Local\Temp\138b682d76b3ec1a4a84406c3f6a0ee2da29bec0ae6feb6c05f7b6c8eb98b96f.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 3668 wrote to memory of 1856 | N/A | C:\Users\Admin\AppData\Local\Temp\138b682d76b3ec1a4a84406c3f6a0ee2da29bec0ae6feb6c05f7b6c8eb98b96f.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\138b682d76b3ec1a4a84406c3f6a0ee2da29bec0ae6feb6c05f7b6c8eb98b96f.exe
"C:\Users\Admin\AppData\Local\Temp\138b682d76b3ec1a4a84406c3f6a0ee2da29bec0ae6feb6c05f7b6c8eb98b96f.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 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 5.tcp.eu.ngrok.io | udp |
| DE | 3.67.62.142:14816 | 5.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 7.98.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 136.32.126.40.in-addr.arpa | udp |
| DE | 3.67.62.142:14816 | 5.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 5.tcp.eu.ngrok.io | udp |
| DE | 3.64.4.198:14816 | 5.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 53.210.109.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 65.139.73.23.in-addr.arpa | udp |
| DE | 3.64.4.198:14816 | 5.tcp.eu.ngrok.io | tcp |
| DE | 3.64.4.198:14816 | 5.tcp.eu.ngrok.io | tcp |
| DE | 3.64.4.198:14816 | 5.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 5.tcp.eu.ngrok.io | udp |
| DE | 18.158.58.205:14816 | 5.tcp.eu.ngrok.io | tcp |
| DE | 18.158.58.205:14816 | 5.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 14.227.111.52.in-addr.arpa | udp |
| DE | 18.158.58.205:14816 | 5.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 5.tcp.eu.ngrok.io | udp |
| DE | 18.158.58.205:14816 | 5.tcp.eu.ngrok.io | tcp |
| DE | 18.158.58.205:14816 | 5.tcp.eu.ngrok.io | tcp |
| DE | 18.158.58.205:14816 | 5.tcp.eu.ngrok.io | tcp |
Files
memory/3668-0-0x0000000074A22000-0x0000000074A23000-memory.dmp
memory/3668-1-0x0000000074A20000-0x0000000074FD1000-memory.dmp
memory/3668-2-0x0000000074A20000-0x0000000074FD1000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
| MD5 | 87763ae22a66ea3276fe9b14d65725ea |
| SHA1 | 908228d0bba0351a4c4bf25ab4ae2b41ed520f7d |
| SHA256 | 138b682d76b3ec1a4a84406c3f6a0ee2da29bec0ae6feb6c05f7b6c8eb98b96f |
| SHA512 | fdf7ba8ebc84b8cb9e3fdaf34d5c035d3456cdc671a6cf0ea1774dc73f4931d95fcdbf25605991028f5236097af6484e2aa9679baf580c15ea982e14f31f30e4 |
memory/1856-18-0x0000000074A20000-0x0000000074FD1000-memory.dmp
memory/1856-21-0x0000000074A20000-0x0000000074FD1000-memory.dmp
memory/1856-20-0x0000000074A20000-0x0000000074FD1000-memory.dmp
memory/3668-19-0x0000000074A20000-0x0000000074FD1000-memory.dmp
memory/1856-22-0x0000000074A20000-0x0000000074FD1000-memory.dmp
memory/1856-23-0x0000000074A20000-0x0000000074FD1000-memory.dmp
memory/1856-24-0x0000000074A20000-0x0000000074FD1000-memory.dmp