Analysis Overview
SHA256
c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127
Threat Level: Known bad
The file c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127 was found to be: Known bad.
Malicious Activity Summary
Orcurs Rat Executable
Orcus family
Orcus
Orcus main payload
Orcurs Rat Executable
Loads dropped DLL
Executes dropped EXE
Checks computer location settings
Drops file in System32 directory
Drops file in Program Files directory
Enumerates physical storage devices
Unsigned PE
Modifies registry class
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
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 01:04
Platform
win7-20231215-en
Max time kernel
121s
Max time network
122s
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 |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WindowsInput.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WindowsInput.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\WindowsInput.exe | C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe | N/A |
| File created | C:\Windows\SysWOW64\WindowsInput.exe.config | C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe | N/A |
| File created | C:\Windows\SysWOW64\WindowsInput.InstallState | C:\Windows\SysWOW64\WindowsInput.exe | 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\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe | N/A |
| File opened for modification | C:\Program Files (x86)\System\System | C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe | N/A |
| File created | C:\Program Files (x86)\System\System.config | C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe | N/A |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_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\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe
"C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe"
C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe" --install
C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.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/2444-0-0x00000000012F0000-0x00000000013DA000-memory.dmp
memory/2444-1-0x0000000074970000-0x000000007505E000-memory.dmp
memory/2444-2-0x0000000004AB0000-0x0000000004AF0000-memory.dmp
memory/2444-3-0x00000000003B0000-0x00000000003BE000-memory.dmp
memory/2444-4-0x0000000000D10000-0x0000000000D6C000-memory.dmp
memory/2444-5-0x0000000000410000-0x0000000000422000-memory.dmp
C:\Windows\SysWOW64\WindowsInput.exe.config
| MD5 | a2b76cea3a59fa9af5ea21ff68139c98 |
| SHA1 | 35d76475e6a54c168f536e30206578babff58274 |
| SHA256 | f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839 |
| SHA512 | b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad |
C:\Windows\SysWOW64\WindowsInput.exe
| MD5 | e6fcf516d8ed8d0d4427f86e08d0d435 |
| SHA1 | c7691731583ab7890086635cb7f3e4c22ca5e409 |
| SHA256 | 8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337 |
| SHA512 | c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e |
memory/2024-14-0x0000000000EF0000-0x0000000000EFC000-memory.dmp
memory/2024-15-0x000007FEF5C50000-0x000007FEF663C000-memory.dmp
memory/2024-16-0x000000001A720000-0x000000001A7A0000-memory.dmp
memory/2024-19-0x000007FEF5C50000-0x000007FEF663C000-memory.dmp
memory/2668-21-0x000007FEF5260000-0x000007FEF5C4C000-memory.dmp
memory/2444-27-0x0000000074970000-0x000000007505E000-memory.dmp
C:\Program Files (x86)\System\System
| MD5 | 484c14a70d5a26ebdadde4ad5e03779e |
| SHA1 | 0e6a5464eb92561eb007f5bd802083c9c6ec1124 |
| SHA256 | c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127 |
| SHA512 | faf234088dce7aa431407bc01777fefd5c67ae497ee63468257cc4e8f4bbc5394b8c2e83cf19ef286b5fd0d74a7dd44a133656a454ec3aaa7cf62ac774e2de8e |
C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents
| MD5 | fff30308c896430d7fd8018955049814 |
| SHA1 | d378a39f59c650582d1a7203e108caa8098a2d22 |
| SHA256 | 172e1ab7aef4cc7d445538c2553257e678788b67c06ec8be1bf6f69c77bfe251 |
| SHA512 | 12499a91c9245c3e5ac2cfcda45683ed82928f1c409450e51a6be482e7d7dacca65ccee95a7d6ff0403ee1f0fe9ed5e002bd30f70792916f010aee21b84ffb25 |
memory/2668-46-0x000007FEF5260000-0x000007FEF5C4C000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-02-09 01:02
Reported
2024-02-09 01:05
Platform
win10v2004-20231215-en
Max time kernel
90s
Max time network
129s
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 |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WindowsInput.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WindowsInput.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\WindowsInput.exe | C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe | N/A |
| File created | C:\Windows\SysWOW64\WindowsInput.exe.config | C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe | N/A |
| File created | C:\Windows\SysWOW64\WindowsInput.InstallState | C:\Windows\SysWOW64\WindowsInput.exe | 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\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe | N/A |
| File opened for modification | C:\Program Files (x86)\System\System | C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe | N/A |
| File created | C:\Program Files (x86)\System\System.config | C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe | N/A |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings | C:\Windows\system32\OpenWith.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings | C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\OpenWith.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4508 wrote to memory of 4648 | N/A | C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe | C:\Windows\SysWOW64\WindowsInput.exe |
| PID 4508 wrote to memory of 4648 | N/A | C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe | C:\Windows\SysWOW64\WindowsInput.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe
"C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe"
C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe" --install
C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe"
C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.178.17.96.in-addr.arpa | udp |
| US | 138.91.171.81:80 | tcp | |
| US | 8.8.8.8:53 | 136.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 173.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
Files
memory/4508-0-0x0000000000AB0000-0x0000000000B9A000-memory.dmp
memory/4508-1-0x0000000074630000-0x0000000074DE0000-memory.dmp
memory/4508-2-0x0000000005520000-0x0000000005530000-memory.dmp
memory/4508-3-0x0000000005480000-0x000000000548E000-memory.dmp
memory/4508-4-0x0000000005530000-0x000000000558C000-memory.dmp
memory/4508-5-0x0000000005B40000-0x00000000060E4000-memory.dmp
memory/4508-6-0x00000000056B0000-0x0000000005742000-memory.dmp
memory/4508-7-0x0000000005690000-0x00000000056A2000-memory.dmp
memory/4508-8-0x0000000005B00000-0x0000000005B22000-memory.dmp
C:\Windows\SysWOW64\WindowsInput.exe
| MD5 | e6fcf516d8ed8d0d4427f86e08d0d435 |
| SHA1 | c7691731583ab7890086635cb7f3e4c22ca5e409 |
| SHA256 | 8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337 |
| SHA512 | c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e |
C:\Windows\SysWOW64\WindowsInput.exe.config
| MD5 | a2b76cea3a59fa9af5ea21ff68139c98 |
| SHA1 | 35d76475e6a54c168f536e30206578babff58274 |
| SHA256 | f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839 |
| SHA512 | b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad |
memory/4648-22-0x00000000001C0000-0x00000000001CC000-memory.dmp
memory/4648-23-0x00007FFA979E0000-0x00007FFA984A1000-memory.dmp
memory/4648-24-0x000000001AF80000-0x000000001AF90000-memory.dmp
memory/4648-25-0x0000000002250000-0x0000000002262000-memory.dmp
memory/4648-26-0x00000000023E0000-0x000000000241C000-memory.dmp
memory/4648-30-0x00007FFA979E0000-0x00007FFA984A1000-memory.dmp
memory/2388-32-0x00007FFA979E0000-0x00007FFA984A1000-memory.dmp
memory/2388-33-0x0000000001A70000-0x0000000001A80000-memory.dmp
memory/2388-34-0x000000001B3F0000-0x000000001B4FA000-memory.dmp
C:\Program Files (x86)\System\System
| MD5 | 484c14a70d5a26ebdadde4ad5e03779e |
| SHA1 | 0e6a5464eb92561eb007f5bd802083c9c6ec1124 |
| SHA256 | c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127 |
| SHA512 | faf234088dce7aa431407bc01777fefd5c67ae497ee63468257cc4e8f4bbc5394b8c2e83cf19ef286b5fd0d74a7dd44a133656a454ec3aaa7cf62ac774e2de8e |
memory/4508-47-0x0000000074630000-0x0000000074DE0000-memory.dmp
memory/2388-48-0x00007FFA979E0000-0x00007FFA984A1000-memory.dmp
memory/2388-49-0x0000000001A70000-0x0000000001A80000-memory.dmp