Analysis Overview
SHA256
58db1f0299b71c3912d3805ed68879ee55cb52ccbbffa186322beebfba70f1a5
Threat Level: Known bad
The file 58db1f0299b71c3912d3805ed68879ee55cb52ccbbffa186322beebfba70f1a5 was found to be: Known bad.
Malicious Activity Summary
Orcus
Orcurs Rat Executable
Orcus main payload
Orcus family
Orcurs Rat Executable
Drops file in Program Files directory
Unsigned PE
Enumerates physical storage devices
Modifies registry class
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-02-09 01:02
Signatures
Orcurs Rat Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Orcus family
Orcus main payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-02-09 01:02
Reported
2024-02-09 01:05
Platform
win7-20231215-en
Max time kernel
122s
Max time network
126s
Command Line
Signatures
Orcus
Orcus main payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Orcurs Rat Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\System\System | C:\Users\Admin\AppData\Local\Temp\58db1f0299b71c3912d3805ed68879ee55cb52ccbbffa186322beebfba70f1a5.exe | N/A |
| File opened for modification | C:\Program Files (x86)\System\System | C:\Users\Admin\AppData\Local\Temp\58db1f0299b71c3912d3805ed68879ee55cb52ccbbffa186322beebfba70f1a5.exe | N/A |
| File created | C:\Program Files (x86)\System\System.config | C:\Users\Admin\AppData\Local\Temp\58db1f0299b71c3912d3805ed68879ee55cb52ccbbffa186322beebfba70f1a5.exe | N/A |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-1603059206-2004189698-4139800220-1000_Classes\Local Settings | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe | N/A |
| N/A | N/A | C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\58db1f0299b71c3912d3805ed68879ee55cb52ccbbffa186322beebfba70f1a5.exe
"C:\Users\Admin\AppData\Local\Temp\58db1f0299b71c3912d3805ed68879ee55cb52ccbbffa186322beebfba70f1a5.exe"
C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Program Files (x86)\System\System
C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
"C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Program Files (x86)\System\System"
Network
Files
memory/2784-1-0x0000000074170000-0x000000007485E000-memory.dmp
memory/2784-0-0x0000000000D50000-0x0000000000E38000-memory.dmp
memory/2784-2-0x0000000000BD0000-0x0000000000C10000-memory.dmp
memory/2784-3-0x0000000000470000-0x000000000047E000-memory.dmp
memory/2784-4-0x0000000000C10000-0x0000000000C6C000-memory.dmp
memory/2784-5-0x00000000005B0000-0x00000000005C2000-memory.dmp
memory/2784-11-0x0000000074170000-0x000000007485E000-memory.dmp
C:\Program Files (x86)\System\System
| MD5 | 6b7766d0c0759dd92ee68643e76d711c |
| SHA1 | 096fc8582d58e3652b2079687486c2bc17da275f |
| SHA256 | 58db1f0299b71c3912d3805ed68879ee55cb52ccbbffa186322beebfba70f1a5 |
| SHA512 | 8232afa19eb3994db1210ce53142c610857b6664c3d45a342463f85d4674d7b32f81bde621c49208aed77bd06a8d01fa16c75169a269448826d122dfdd5419fb |
C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents
| MD5 | dbaa77400a72af46ad48d22a70e29cf4 |
| SHA1 | be3bc1bd4cba5028de8ad36fa6fa94c397af9d40 |
| SHA256 | 145681a319e8b6195acb569d1c75a8b89998834fb8be9fc35c4a1a03d4fc3356 |
| SHA512 | d7c244af6cc38c049e54e65249927687cdb8a694c782cd2aff910adbc5e84cd7bb779b442896702367e48e538027312176c2f7328a3a05c98993e3d22f1d54d5 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-02-09 01:02
Reported
2024-02-09 01:05
Platform
win10v2004-20231215-en
Max time kernel
143s
Max time network
151s
Command Line
Signatures
Orcus
Orcus main payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Orcurs Rat Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\System\System | C:\Users\Admin\AppData\Local\Temp\58db1f0299b71c3912d3805ed68879ee55cb52ccbbffa186322beebfba70f1a5.exe | N/A |
| File opened for modification | C:\Program Files (x86)\System\System | C:\Users\Admin\AppData\Local\Temp\58db1f0299b71c3912d3805ed68879ee55cb52ccbbffa186322beebfba70f1a5.exe | N/A |
| File created | C:\Program Files (x86)\System\System.config | C:\Users\Admin\AppData\Local\Temp\58db1f0299b71c3912d3805ed68879ee55cb52ccbbffa186322beebfba70f1a5.exe | N/A |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000_Classes\Local Settings | C:\Users\Admin\AppData\Local\Temp\58db1f0299b71c3912d3805ed68879ee55cb52ccbbffa186322beebfba70f1a5.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000_Classes\Local Settings | C:\Windows\system32\OpenWith.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\OpenWith.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\58db1f0299b71c3912d3805ed68879ee55cb52ccbbffa186322beebfba70f1a5.exe
"C:\Users\Admin\AppData\Local\Temp\58db1f0299b71c3912d3805ed68879ee55cb52ccbbffa186322beebfba70f1a5.exe"
C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 79.121.231.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 17.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | udp | |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.173.189.20.in-addr.arpa | udp |
Files
memory/3048-1-0x0000000074C50000-0x0000000075400000-memory.dmp
memory/3048-0-0x0000000000150000-0x0000000000238000-memory.dmp
memory/3048-2-0x0000000004C60000-0x0000000004C70000-memory.dmp
memory/3048-3-0x0000000002590000-0x000000000259E000-memory.dmp
memory/3048-4-0x0000000004A70000-0x0000000004ACC000-memory.dmp
memory/3048-5-0x0000000005220000-0x00000000057C4000-memory.dmp
memory/3048-6-0x0000000004C70000-0x0000000004D02000-memory.dmp
memory/3048-7-0x0000000005110000-0x0000000005122000-memory.dmp
C:\Program Files (x86)\System\System
| MD5 | eb5a1f3381bda880473959845db38693 |
| SHA1 | f98f11377aa4eb775022a71396b4d6b80b860751 |
| SHA256 | 808c7340f7f5b57266d80fbc66227580f322097fad455c81a3fcaad5d4964249 |
| SHA512 | 34a3f782265454b22edfe44b23d001b3f00fb597942778ce347faac9de3c84056a820e40c3bd7fec0b0f1bdc06d8b98542823e257122d5f356c034967530c6e9 |
memory/3048-20-0x0000000074C50000-0x0000000075400000-memory.dmp