Analysis Overview
SHA256
c31f48204b6a9e9188296864abf9b8ad92a54f13973c2c5462da521a9b7c0263
Threat Level: Known bad
The file c31f48204b6a9e9188296864abf9b8ad92a54f13973c2c5462da521a9b7c0263 was found to be: Known bad.
Malicious Activity Summary
Orcurs Rat Executable
Orcus
Orcus family
Orcus main payload
Orcurs Rat Executable
Loads dropped DLL
Executes dropped EXE
Checks computer location settings
Adds Run key to start application
Legitimate hosting services abused for malware hosting/C2
Drops file in Program Files directory
Unsigned PE
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2023-12-21 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
2023-12-21 01:02
Reported
2023-12-21 01:04
Platform
win7-20231215-en
Max time kernel
121s
Max time network
146s
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 |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Orcus\Orcus.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\c31f48204b6a9e9188296864abf9b8ad92a54f13973c2c5462da521a9b7c0263.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Windows\CurrentVersion\Run\windows = "\"C:\\Program Files (x86)\\Orcus\\Orcus.exe\"" | C:\Program Files (x86)\Orcus\Orcus.exe | N/A |
Legitimate hosting services abused for malware hosting/C2
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\Orcus\Orcus.exe | C:\Users\Admin\AppData\Local\Temp\c31f48204b6a9e9188296864abf9b8ad92a54f13973c2c5462da521a9b7c0263.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Orcus\Orcus.exe | C:\Users\Admin\AppData\Local\Temp\c31f48204b6a9e9188296864abf9b8ad92a54f13973c2c5462da521a9b7c0263.exe | N/A |
| File created | C:\Program Files (x86)\Orcus\Orcus.exe.config | C:\Users\Admin\AppData\Local\Temp\c31f48204b6a9e9188296864abf9b8ad92a54f13973c2c5462da521a9b7c0263.exe | N/A |
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Program Files (x86)\Orcus\Orcus.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Orcus\Orcus.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Orcus\Orcus.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1732 wrote to memory of 2484 | N/A | C:\Users\Admin\AppData\Local\Temp\c31f48204b6a9e9188296864abf9b8ad92a54f13973c2c5462da521a9b7c0263.exe | C:\Program Files (x86)\Orcus\Orcus.exe |
| PID 1732 wrote to memory of 2484 | N/A | C:\Users\Admin\AppData\Local\Temp\c31f48204b6a9e9188296864abf9b8ad92a54f13973c2c5462da521a9b7c0263.exe | C:\Program Files (x86)\Orcus\Orcus.exe |
| PID 1732 wrote to memory of 2484 | N/A | C:\Users\Admin\AppData\Local\Temp\c31f48204b6a9e9188296864abf9b8ad92a54f13973c2c5462da521a9b7c0263.exe | C:\Program Files (x86)\Orcus\Orcus.exe |
| PID 1732 wrote to memory of 2484 | N/A | C:\Users\Admin\AppData\Local\Temp\c31f48204b6a9e9188296864abf9b8ad92a54f13973c2c5462da521a9b7c0263.exe | C:\Program Files (x86)\Orcus\Orcus.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\c31f48204b6a9e9188296864abf9b8ad92a54f13973c2c5462da521a9b7c0263.exe
"C:\Users\Admin\AppData\Local\Temp\c31f48204b6a9e9188296864abf9b8ad92a54f13973c2c5462da521a9b7c0263.exe"
C:\Program Files (x86)\Orcus\Orcus.exe
"C:\Program Files (x86)\Orcus\Orcus.exe"
Network
| Country | Destination | Domain | Proto |
| N/A | 192.168.0.19:10134 | tcp | |
| US | 8.8.8.8:53 | 0.tcp.ngrok.io | udp |
| US | 3.134.39.220:11834 | 0.tcp.ngrok.io | tcp |
Files
memory/1732-0-0x0000000001020000-0x0000000001108000-memory.dmp
memory/1732-1-0x0000000074970000-0x000000007505E000-memory.dmp
memory/1732-2-0x0000000004AC0000-0x0000000004B00000-memory.dmp
memory/1732-3-0x00000000003C0000-0x00000000003CE000-memory.dmp
memory/1732-4-0x0000000000570000-0x00000000005CC000-memory.dmp
memory/1732-5-0x0000000000A30000-0x0000000000A42000-memory.dmp
\Program Files (x86)\Orcus\Orcus.exe
| MD5 | 16a5e446b2f6d72f5c3b51f2030f0896 |
| SHA1 | 062a20802a429c2affcf2b2d90307abd3a1a4d42 |
| SHA256 | c31f48204b6a9e9188296864abf9b8ad92a54f13973c2c5462da521a9b7c0263 |
| SHA512 | 53edc505dd50d61b2ff5e40bf3116b337293051d33f04cf8215707710839cf6da1825bdb961a79c99ba30d05c17d0bfa13cf97081af5aebcda87688000b7f9ee |
memory/2484-17-0x00000000001F0000-0x00000000002D8000-memory.dmp
memory/2484-16-0x0000000074970000-0x000000007505E000-memory.dmp
memory/2484-18-0x0000000004960000-0x00000000049A0000-memory.dmp
memory/1732-15-0x0000000074970000-0x000000007505E000-memory.dmp
C:\Program Files (x86)\Orcus\Orcus.exe.config
| MD5 | a2b76cea3a59fa9af5ea21ff68139c98 |
| SHA1 | 35d76475e6a54c168f536e30206578babff58274 |
| SHA256 | f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839 |
| SHA512 | b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad |
memory/2484-19-0x0000000000970000-0x00000000009BE000-memory.dmp
memory/2484-20-0x0000000000410000-0x0000000000428000-memory.dmp
memory/2484-21-0x0000000002030000-0x0000000002040000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\Cab52D3.tmp
| MD5 | ac05d27423a85adc1622c714f2cb6184 |
| SHA1 | b0fe2b1abddb97837ea0195be70ab2ff14d43198 |
| SHA256 | c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d |
| SHA512 | 6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d |
memory/2484-38-0x0000000074970000-0x000000007505E000-memory.dmp
memory/2484-39-0x0000000004960000-0x00000000049A0000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-12-21 01:02
Reported
2023-12-21 01:05
Platform
win10v2004-20231215-en
Max time kernel
129s
Max time network
150s
Command Line
Signatures
Orcus
Orcus main payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| 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 |
| 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\c31f48204b6a9e9188296864abf9b8ad92a54f13973c2c5462da521a9b7c0263.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Orcus\Orcus.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\windows = "\"C:\\Program Files (x86)\\Orcus\\Orcus.exe\"" | C:\Program Files (x86)\Orcus\Orcus.exe | N/A |
Legitimate hosting services abused for malware hosting/C2
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\Orcus\Orcus.exe | C:\Users\Admin\AppData\Local\Temp\c31f48204b6a9e9188296864abf9b8ad92a54f13973c2c5462da521a9b7c0263.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Orcus\Orcus.exe | C:\Users\Admin\AppData\Local\Temp\c31f48204b6a9e9188296864abf9b8ad92a54f13973c2c5462da521a9b7c0263.exe | N/A |
| File created | C:\Program Files (x86)\Orcus\Orcus.exe.config | C:\Users\Admin\AppData\Local\Temp\c31f48204b6a9e9188296864abf9b8ad92a54f13973c2c5462da521a9b7c0263.exe | N/A |
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Program Files (x86)\Orcus\Orcus.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Orcus\Orcus.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Orcus\Orcus.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3996 wrote to memory of 4756 | N/A | C:\Users\Admin\AppData\Local\Temp\c31f48204b6a9e9188296864abf9b8ad92a54f13973c2c5462da521a9b7c0263.exe | C:\Program Files (x86)\Orcus\Orcus.exe |
| PID 3996 wrote to memory of 4756 | N/A | C:\Users\Admin\AppData\Local\Temp\c31f48204b6a9e9188296864abf9b8ad92a54f13973c2c5462da521a9b7c0263.exe | C:\Program Files (x86)\Orcus\Orcus.exe |
| PID 3996 wrote to memory of 4756 | N/A | C:\Users\Admin\AppData\Local\Temp\c31f48204b6a9e9188296864abf9b8ad92a54f13973c2c5462da521a9b7c0263.exe | C:\Program Files (x86)\Orcus\Orcus.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\c31f48204b6a9e9188296864abf9b8ad92a54f13973c2c5462da521a9b7c0263.exe
"C:\Users\Admin\AppData\Local\Temp\c31f48204b6a9e9188296864abf9b8ad92a54f13973c2c5462da521a9b7c0263.exe"
C:\Program Files (x86)\Orcus\Orcus.exe
"C:\Program Files (x86)\Orcus\Orcus.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 3.181.190.20.in-addr.arpa | udp |
| N/A | 192.168.0.19:10134 | tcp | |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.tcp.ngrok.io | udp |
| US | 3.13.191.225:11834 | 0.tcp.ngrok.io | tcp |
| US | 8.8.8.8:53 | 225.191.13.3.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.134.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 79.121.231.20.in-addr.arpa | udp |
Files
memory/3996-1-0x00000000746E0000-0x0000000074E90000-memory.dmp
memory/3996-0-0x00000000001B0000-0x0000000000298000-memory.dmp
memory/3996-2-0x0000000004D10000-0x0000000004D20000-memory.dmp
memory/3996-3-0x0000000002690000-0x000000000269E000-memory.dmp
memory/3996-4-0x0000000004C00000-0x0000000004C5C000-memory.dmp
memory/3996-5-0x0000000005300000-0x00000000058A4000-memory.dmp
memory/3996-6-0x0000000004DF0000-0x0000000004E82000-memory.dmp
memory/3996-7-0x0000000004DD0000-0x0000000004DE2000-memory.dmp
C:\Program Files (x86)\Orcus\Orcus.exe
| MD5 | 7581bdb769809e00ca361b074a6f7014 |
| SHA1 | ae862fdae47cbc5bc0f408a0e0735969d129e4f4 |
| SHA256 | ef9af9e503ebe08b81e7c7d581f118422087e15b9a25a884d046ecdadaa96221 |
| SHA512 | 512b6073109f83ab520ef03142ef95b9c47c14d0d7ff1be0663ed5237967b6c4e4a92663dc0e3bf5bffd4cedcfbc6a10e811bcedd7e13ad3ac022ad46882a3e5 |
C:\Program Files (x86)\Orcus\Orcus.exe
| MD5 | 0018ba2fcd26f60d3b1eb62c16b560f8 |
| SHA1 | 71cdb996640203f654f646b791057d74a27ba598 |
| SHA256 | 743f6f848371a03a676f160617d7855fbd4933e177ed13870fb4eb329fbd2f67 |
| SHA512 | 9e2332f2cbb3f2bb5a7caf6201fff598d085daf936f4912a20593cf66a6872fe0c1eb0c298627634252e7270cf9dbfeb165e7677a3a5615605640a27e7ad2aa7 |
memory/3996-22-0x00000000746E0000-0x0000000074E90000-memory.dmp
C:\Program Files (x86)\Orcus\Orcus.exe
| MD5 | 030b9ade42a04e0b80ea8e9527325cc2 |
| SHA1 | 2179aa67a608a1b8dcede916852103876a255d4d |
| SHA256 | f64048ba14a47b973b5dfcb1dcbd6c02c0c170025e70af76ffefea674e82e2a8 |
| SHA512 | 5015624f73bf9286859cd6eb43c11a21ff661c907f867bee7862b80b28fa4c68ad5d28acf5487091001bd3a9cb05c0417f5aeac37424a0561c2e05d118c6750a |
memory/4756-23-0x00000000746E0000-0x0000000074E90000-memory.dmp
memory/4756-24-0x0000000004EE0000-0x0000000004EF0000-memory.dmp
C:\Program Files (x86)\Orcus\Orcus.exe.config
| MD5 | a2b76cea3a59fa9af5ea21ff68139c98 |
| SHA1 | 35d76475e6a54c168f536e30206578babff58274 |
| SHA256 | f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839 |
| SHA512 | b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad |
memory/4756-25-0x0000000005580000-0x00000000055CE000-memory.dmp
memory/4756-26-0x00000000055F0000-0x0000000005608000-memory.dmp
memory/4756-27-0x0000000005D10000-0x0000000005D20000-memory.dmp
memory/4756-28-0x0000000006040000-0x000000000604A000-memory.dmp
memory/4756-29-0x00000000068F0000-0x0000000006956000-memory.dmp
memory/4756-30-0x0000000007180000-0x0000000007798000-memory.dmp
memory/4756-31-0x0000000006B80000-0x0000000006B92000-memory.dmp
memory/4756-32-0x0000000006BE0000-0x0000000006C1C000-memory.dmp
memory/4756-33-0x0000000006C20000-0x0000000006C6C000-memory.dmp
memory/4756-34-0x0000000006DA0000-0x0000000006EAA000-memory.dmp
memory/4756-35-0x00000000077A0000-0x0000000007962000-memory.dmp
memory/4756-36-0x00000000746E0000-0x0000000074E90000-memory.dmp
memory/4756-37-0x0000000004EE0000-0x0000000004EF0000-memory.dmp