Analysis Overview
SHA256
a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908
Threat Level: Known bad
The file a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908 was found to be: Known bad.
Malicious Activity Summary
Orcus family
Orcus
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Unsigned PE
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2025-01-26 01:06
Signatures
Orcus family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-01-26 01:06
Reported
2025-01-26 01:08
Platform
win7-20240903-en
Max time kernel
145s
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\a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.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\a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.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 WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 536 wrote to memory of 2144 | N/A | C:\Users\Admin\AppData\Local\Temp\a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 536 wrote to memory of 2144 | N/A | C:\Users\Admin\AppData\Local\Temp\a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 536 wrote to memory of 2144 | N/A | C:\Users\Admin\AppData\Local\Temp\a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 536 wrote to memory of 2144 | N/A | C:\Users\Admin\AppData\Local\Temp\a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.exe
"C:\Users\Admin\AppData\Local\Temp\a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.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 | 192.168.1.42:8888 | tcp | |
| N/A | 192.168.1.42:8888 | tcp | |
| N/A | 192.168.1.42:8888 | tcp | |
| N/A | 192.168.1.42:8888 | tcp | |
| N/A | 192.168.1.42:8888 | tcp | |
| N/A | 192.168.1.42:8888 | tcp | |
| N/A | 192.168.1.42:8888 | tcp | |
| N/A | 192.168.1.42:8888 | tcp | |
| N/A | 192.168.1.42:8888 | tcp | |
| N/A | 192.168.1.42:8888 | tcp | |
| N/A | 192.168.1.42:8888 | tcp | |
| N/A | 192.168.1.42:8888 | tcp |
Files
memory/536-0-0x000000007403E000-0x000000007403F000-memory.dmp
memory/536-1-0x0000000000260000-0x0000000000338000-memory.dmp
memory/536-2-0x00000000005A0000-0x00000000005AA000-memory.dmp
memory/536-3-0x0000000074030000-0x000000007471E000-memory.dmp
memory/536-4-0x0000000001EF0000-0x0000000001F3C000-memory.dmp
memory/536-7-0x0000000002000000-0x000000000204E000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
| MD5 | 0ff88f2d12dcbab52e70519e4f7c4fdc |
| SHA1 | 8382f9791b597fda7c565a8d82337d904bd5572d |
| SHA256 | a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908 |
| SHA512 | b09f1cc3a90dcae3bd4eefdc4c45433387a5729e38e460d66c66acaab0eaf49b7f5f1f1bfa425d998c5de5dab05f8393d6d990b9f592dc15f012e019dc5075e4 |
memory/2144-16-0x0000000074030000-0x000000007471E000-memory.dmp
memory/2144-15-0x0000000000B90000-0x0000000000C68000-memory.dmp
memory/536-14-0x0000000074030000-0x000000007471E000-memory.dmp
memory/2144-17-0x0000000074030000-0x000000007471E000-memory.dmp
memory/2144-18-0x0000000000330000-0x0000000000340000-memory.dmp
memory/2144-19-0x0000000074030000-0x000000007471E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-01-26 01:06
Reported
2025-01-26 01:08
Platform
win10v2004-20241007-en
Max time kernel
149s
Max time network
150s
Command Line
Signatures
Orcus
Orcus family
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.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 |
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\a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.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 WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3760 wrote to memory of 1188 | N/A | C:\Users\Admin\AppData\Local\Temp\a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 3760 wrote to memory of 1188 | N/A | C:\Users\Admin\AppData\Local\Temp\a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
| PID 3760 wrote to memory of 1188 | N/A | C:\Users\Admin\AppData\Local\Temp\a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.exe
"C:\Users\Admin\AppData\Local\Temp\a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.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 |
| N/A | 192.168.1.42:8888 | tcp | |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 202.110.86.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 76.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 7.98.51.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| N/A | 192.168.1.42:8888 | tcp | |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| N/A | 192.168.1.42:8888 | tcp | |
| US | 8.8.8.8:53 | 212.20.149.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.66.18.2.in-addr.arpa | udp |
| N/A | 192.168.1.42:8888 | tcp | |
| N/A | 192.168.1.42:8888 | tcp | |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| N/A | 192.168.1.42:8888 | tcp | |
| N/A | 192.168.1.42:8888 | tcp | |
| US | 8.8.8.8:53 | 19.229.111.52.in-addr.arpa | udp |
| N/A | 192.168.1.42:8888 | tcp | |
| N/A | 192.168.1.42:8888 | tcp | |
| N/A | 192.168.1.42:8888 | tcp | |
| N/A | 192.168.1.42:8888 | tcp | |
| N/A | 192.168.1.42:8888 | tcp | |
| US | 8.8.8.8:53 | udp |
Files
memory/3760-0-0x0000000074DAE000-0x0000000074DAF000-memory.dmp
memory/3760-1-0x0000000000780000-0x0000000000858000-memory.dmp
memory/3760-3-0x0000000074DA0000-0x0000000075550000-memory.dmp
memory/3760-2-0x00000000051C0000-0x00000000051CA000-memory.dmp
memory/3760-4-0x0000000005870000-0x0000000005E14000-memory.dmp
memory/3760-6-0x0000000005630000-0x000000000567C000-memory.dmp
memory/3760-5-0x00000000056C0000-0x0000000005752000-memory.dmp
memory/3760-9-0x0000000005770000-0x00000000057BE000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
| MD5 | 0ff88f2d12dcbab52e70519e4f7c4fdc |
| SHA1 | 8382f9791b597fda7c565a8d82337d904bd5572d |
| SHA256 | a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908 |
| SHA512 | b09f1cc3a90dcae3bd4eefdc4c45433387a5729e38e460d66c66acaab0eaf49b7f5f1f1bfa425d998c5de5dab05f8393d6d990b9f592dc15f012e019dc5075e4 |
memory/1188-21-0x0000000074DA0000-0x0000000075550000-memory.dmp
memory/1188-22-0x0000000074DA0000-0x0000000075550000-memory.dmp
memory/1188-23-0x0000000006330000-0x00000000064F2000-memory.dmp
memory/1188-24-0x0000000005CB0000-0x0000000005CC0000-memory.dmp
memory/1188-25-0x0000000006740000-0x000000000674A000-memory.dmp
memory/3760-26-0x0000000074DA0000-0x0000000075550000-memory.dmp
memory/1188-27-0x0000000074DA0000-0x0000000075550000-memory.dmp