Analysis Overview
SHA256
40e91c8d3caf657b3a154ce8f801acd5ce2ed18639f82fe16c42d7603794d341
Threat Level: Known bad
The file 40e91c8d3caf657b3a154ce8f801acd5ce2ed18639f82fe16c42d7603794d341 was found to be: Known bad.
Malicious Activity Summary
Orcus
Orcus family
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Drops desktop.ini file(s)
Drops file in Windows directory
Enumerates physical storage devices
Unsigned PE
System Location Discovery: System Language Discovery
Suspicious use of WriteProcessMemory
Suspicious use of SendNotifyMessage
Suspicious use of FindShellTrayWindow
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2025-01-27 01:01
Signatures
Orcus family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-01-27 01:01
Reported
2025-01-27 01:04
Platform
win7-20240903-en
Max time kernel
147s
Max time network
147s
Command Line
Signatures
Orcus
Orcus family
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Script.exe | N/A |
| 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\40e91c8d3caf657b3a154ce8f801acd5ce2ed18639f82fe16c42d7603794d341.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Script.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\40e91c8d3caf657b3a154ce8f801acd5ce2ed18639f82fe16c42d7603794d341.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\Script.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
Processes
C:\Users\Admin\AppData\Local\Temp\40e91c8d3caf657b3a154ce8f801acd5ce2ed18639f82fe16c42d7603794d341.exe
"C:\Users\Admin\AppData\Local\Temp\40e91c8d3caf657b3a154ce8f801acd5ce2ed18639f82fe16c42d7603794d341.exe"
C:\Users\Admin\AppData\Local\Temp\Script.exe
"C:\Users\Admin\AppData\Local\Temp\Script.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 | 192.168.1.66:1604 | tcp | |
| N/A | 192.168.1.66:1604 | tcp | |
| N/A | 192.168.1.66:1604 | tcp | |
| N/A | 192.168.1.66:1604 | tcp | |
| N/A | 192.168.1.66:1604 | tcp | |
| N/A | 192.168.1.66:1604 | tcp | |
| N/A | 192.168.1.66:1604 | tcp | |
| N/A | 192.168.1.66:1604 | tcp | |
| N/A | 192.168.1.66:1604 | tcp | |
| N/A | 192.168.1.66:1604 | tcp | |
| N/A | 192.168.1.66:1604 | tcp | |
| N/A | 192.168.1.66:1604 | tcp |
Files
\Users\Admin\AppData\Local\Temp\Script.exe
| MD5 | 98a5ba2b1804e05fd8d361429c538d5e |
| SHA1 | ff979f68614cdddf6db17ff574a51153fd6358bd |
| SHA256 | 502302c8b6270b082df08e81c96bde54a220bd6ae2a8ae3b08100529e2a7a753 |
| SHA512 | ad7ac8fa9511b973dbf5cd691a6d2ebb265e9eeb8549872751d89e8f8f71ca70a8dcc6e5cfa7b678d6cd9ce61096d5536792eb53244eff08ae0ee8fc91b3a478 |
memory/2404-5-0x0000000000400000-0x00000000004DC000-memory.dmp
memory/2772-8-0x00000000740F1000-0x00000000740F2000-memory.dmp
memory/2772-9-0x00000000740F0000-0x000000007469B000-memory.dmp
memory/2772-10-0x00000000740F0000-0x000000007469B000-memory.dmp
memory/2772-19-0x00000000740F0000-0x000000007469B000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-01-27 01:01
Reported
2025-01-27 01:04
Platform
win10v2004-20241007-en
Max time kernel
149s
Max time network
153s
Command Line
Signatures
Orcus
Orcus family
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\40e91c8d3caf657b3a154ce8f801acd5ce2ed18639f82fe16c42d7603794d341.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\Script.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Script.exe | N/A |
| 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\Script.exe | N/A |
| File opened for modification | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\Script.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\Script.exe | N/A |
| File opened for modification | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\Script.exe | N/A |
| File opened for modification | C:\Windows\assembly | C:\Users\Admin\AppData\Local\Temp\Script.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\40e91c8d3caf657b3a154ce8f801acd5ce2ed18639f82fe16c42d7603794d341.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\Script.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
Processes
C:\Users\Admin\AppData\Local\Temp\40e91c8d3caf657b3a154ce8f801acd5ce2ed18639f82fe16c42d7603794d341.exe
"C:\Users\Admin\AppData\Local\Temp\40e91c8d3caf657b3a154ce8f801acd5ce2ed18639f82fe16c42d7603794d341.exe"
C:\Users\Admin\AppData\Local\Temp\Script.exe
"C:\Users\Admin\AppData\Local\Temp\Script.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 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 167.173.78.104.in-addr.arpa | udp |
| N/A | 192.168.1.66:1604 | tcp | |
| N/A | 192.168.1.66:1604 | tcp | |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| N/A | 192.168.1.66:1604 | tcp | |
| US | 8.8.8.8:53 | 197.87.175.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 139.53.16.96.in-addr.arpa | udp |
| N/A | 192.168.1.66:1604 | tcp | |
| N/A | 192.168.1.66:1604 | tcp | |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| N/A | 192.168.1.66:1604 | tcp | |
| N/A | 192.168.1.66:1604 | tcp | |
| US | 8.8.8.8:53 | 14.227.111.52.in-addr.arpa | udp |
| N/A | 192.168.1.66:1604 | tcp | |
| N/A | 192.168.1.66:1604 | tcp | |
| N/A | 192.168.1.66:1604 | tcp | |
| N/A | 192.168.1.66:1604 | tcp | |
| N/A | 192.168.1.66:1604 | tcp | |
| US | 8.8.8.8:53 | 18.173.189.20.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\Script.exe
| MD5 | 98a5ba2b1804e05fd8d361429c538d5e |
| SHA1 | ff979f68614cdddf6db17ff574a51153fd6358bd |
| SHA256 | 502302c8b6270b082df08e81c96bde54a220bd6ae2a8ae3b08100529e2a7a753 |
| SHA512 | ad7ac8fa9511b973dbf5cd691a6d2ebb265e9eeb8549872751d89e8f8f71ca70a8dcc6e5cfa7b678d6cd9ce61096d5536792eb53244eff08ae0ee8fc91b3a478 |
memory/4508-10-0x0000000000400000-0x00000000004DC000-memory.dmp
memory/3744-12-0x0000000074F82000-0x0000000074F83000-memory.dmp
memory/3744-13-0x0000000074F80000-0x0000000075531000-memory.dmp
memory/3744-14-0x0000000074F80000-0x0000000075531000-memory.dmp
memory/3744-30-0x0000000074F80000-0x0000000075531000-memory.dmp
memory/4232-32-0x0000000074F80000-0x0000000075531000-memory.dmp
memory/4232-31-0x0000000074F80000-0x0000000075531000-memory.dmp
memory/4232-33-0x0000000074F80000-0x0000000075531000-memory.dmp