Analysis Overview
SHA256
de338e0379af8619e9d16f1e6a5e756e2edf89ae76454b35bdd6a27206f54383
Threat Level: Known bad
The file ezrat.exe was found to be: Known bad.
Malicious Activity Summary
Orcus
Orcurs Rat Executable
Orcus main payload
Orcus family
Orcurs Rat Executable
Checks computer location settings
Executes dropped EXE
Drops desktop.ini file(s)
Drops file in Windows directory
Drops file in Program Files directory
Unsigned PE
Enumerates physical storage devices
Suspicious use of SendNotifyMessage
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of FindShellTrayWindow
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-02-20 08:19
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
2024-02-20 08:19
Reported
2024-02-20 08:20
Platform
win10v2004-20231215-en
Max time kernel
38s
Max time network
39s
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-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\ezrat.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\Orcus\Orcus.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\ezrat.exe | N/A |
| File opened for modification | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\ezrat.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files\Orcus\Orcus.exe | C:\Users\Admin\AppData\Local\Temp\ezrat.exe | N/A |
| File opened for modification | C:\Program Files\Orcus\Orcus.exe | C:\Users\Admin\AppData\Local\Temp\ezrat.exe | N/A |
| File created | C:\Program Files\Orcus\Orcus.exe.config | C:\Users\Admin\AppData\Local\Temp\ezrat.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\assembly | C:\Users\Admin\AppData\Local\Temp\ezrat.exe | N/A |
| File created | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\ezrat.exe | N/A |
| File opened for modification | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\ezrat.exe | N/A |
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Program Files\Orcus\Orcus.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\Orcus\Orcus.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\Orcus\Orcus.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3652 wrote to memory of 1980 | N/A | C:\Users\Admin\AppData\Local\Temp\ezrat.exe | C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe |
| PID 3652 wrote to memory of 1980 | N/A | C:\Users\Admin\AppData\Local\Temp\ezrat.exe | C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe |
| PID 1980 wrote to memory of 2804 | N/A | C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe | C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe |
| PID 1980 wrote to memory of 2804 | N/A | C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe | C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe |
| PID 3652 wrote to memory of 2176 | N/A | C:\Users\Admin\AppData\Local\Temp\ezrat.exe | C:\Program Files\Orcus\Orcus.exe |
| PID 3652 wrote to memory of 2176 | N/A | C:\Users\Admin\AppData\Local\Temp\ezrat.exe | C:\Program Files\Orcus\Orcus.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\ezrat.exe
"C:\Users\Admin\AppData\Local\Temp\ezrat.exe"
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe
"C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\gddzsh4r.cmdline"
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES4315.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC4314.tmp"
C:\Program Files\Orcus\Orcus.exe
"C:\Program Files\Orcus\Orcus.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 180.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 4.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | centre-shaped.gl.at.ply.gg | udp |
| US | 147.185.221.18:30014 | centre-shaped.gl.at.ply.gg | tcp |
| US | 8.8.8.8:53 | 18.221.185.147.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 173.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 81.171.91.138.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
Files
memory/3652-0-0x00007FFFD69E0000-0x00007FFFD7381000-memory.dmp
memory/3652-2-0x0000000000FB0000-0x0000000000FC0000-memory.dmp
memory/3652-1-0x000000001B6F0000-0x000000001B74C000-memory.dmp
memory/3652-5-0x000000001B7F0000-0x000000001B7FE000-memory.dmp
memory/3652-7-0x000000001BE10000-0x000000001C2DE000-memory.dmp
memory/3652-6-0x00007FFFD69E0000-0x00007FFFD7381000-memory.dmp
memory/3652-8-0x000000001C380000-0x000000001C41C000-memory.dmp
\??\c:\Users\Admin\AppData\Local\Temp\gddzsh4r.cmdline
| MD5 | dfb8ae07c190217e0c70e7a46683e340 |
| SHA1 | 2dc5c0f0c63d64775035aafce95c2182bcd8463f |
| SHA256 | 59514e3eec63312b81b9bc803d22ca9523a019eade3cd258269be841fc002ef2 |
| SHA512 | e50c2acd9b358d10f75f6f88fd7c69234ad11d9a0edf7343052e1d06c4bdc98cb4953236bc90c468ee32fa8c0be68d98a4672cb2f019fbeda3806b1e6699c04f |
\??\c:\Users\Admin\AppData\Local\Temp\gddzsh4r.0.cs
| MD5 | f13553fde49006cf6bde713569ba89ea |
| SHA1 | 3f5128d819f2344831ee62eea067ea922ec1c339 |
| SHA256 | ef2573fdb7107d29cdb7acddd6e99d8736dca2a4bc58ad84d771817f4a51611f |
| SHA512 | c68dbecdea485ffc980a2f22b1ec971a32accd52d07c34acc2ef059889583c2e8b4739de316ac244fbacd1949d8841a535dc0ed5657e32d0517229f9cf1441c6 |
memory/1980-14-0x0000000000A60000-0x0000000000A70000-memory.dmp
\??\c:\Users\Admin\AppData\Local\Temp\CSC4314.tmp
| MD5 | 26cf559c676d3964803e3bc50b7434e0 |
| SHA1 | a9957517f4cbbf9c0e5c73b1a7fe5cb5378ddba0 |
| SHA256 | ba4fe192a950de857721f4eb9ef872488a5e984c6bba6df87b72e32c6a25738c |
| SHA512 | be0684454752b0ba0327eced1c1bf191f728e6a474e2e3c566c9d825ba8994867590dcdae61997c6e9767a0e85353e6c8446b1c0801f5b830d24d27c38bd4e48 |
C:\Users\Admin\AppData\Local\Temp\RES4315.tmp
| MD5 | fc32eccd1a47d6c0dff4dd051c1affcc |
| SHA1 | ef343a15d064ca2879597f688812c47b26ae7bf6 |
| SHA256 | 53e285d6883e820e14dea09a108d5c6ebe6d5c8b7a5b39740e7f64a10bff7e05 |
| SHA512 | c5396c322f7a58640ffa0fc2767cf41376cd41da75e72c0df0c02a5e7a81588d3d314544764970f062da5d387a3a85fa827e587d3427b1e6bcf50b404a4ee605 |
C:\Users\Admin\AppData\Local\Temp\gddzsh4r.dll
| MD5 | d71be8a0214134dbfa6fa91dbde7b534 |
| SHA1 | 2a5d33409ac208e9bba5cad4db447c63caf05b05 |
| SHA256 | 0b2163888b962d77d0c46c990ed342395dd079e4c796d34fcc36edf51c02abd9 |
| SHA512 | efc02b70e9cc0e1a0e826ed0af1ad2d2f6a198ccdf5a6d40216818238b7884c0e0f396f37d46b99756961803851310b329b9e11623eb43888ba00e6f3ee56352 |
memory/3652-22-0x000000001C820000-0x000000001C836000-memory.dmp
memory/3652-24-0x0000000001220000-0x0000000001232000-memory.dmp
memory/3652-25-0x0000000001200000-0x0000000001208000-memory.dmp
memory/3652-26-0x00000000011F0000-0x00000000011F8000-memory.dmp
memory/3652-27-0x0000000000FB0000-0x0000000000FC0000-memory.dmp
C:\Program Files\Orcus\Orcus.exe
| MD5 | 789a48413608ca25fbfa0c89494b70fc |
| SHA1 | 95dbad2f6d28614abf7b5e9199aff94ee6724ca7 |
| SHA256 | de338e0379af8619e9d16f1e6a5e756e2edf89ae76454b35bdd6a27206f54383 |
| SHA512 | b9203b039df11c56d17ee9f9f07ad15f0eaadc0ff13bfa9dbd727e7baf9704d41602586575d65573aad8592789e6b4183cbe0b194d63046b303f4e5c4417b1e8 |
C:\Program Files\Orcus\Orcus.exe.config
| MD5 | a2b76cea3a59fa9af5ea21ff68139c98 |
| SHA1 | 35d76475e6a54c168f536e30206578babff58274 |
| SHA256 | f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839 |
| SHA512 | b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad |
memory/2176-44-0x0000000000050000-0x000000000013A000-memory.dmp
memory/2176-46-0x00007FFFD3A40000-0x00007FFFD4501000-memory.dmp
memory/3652-45-0x00007FFFD69E0000-0x00007FFFD7381000-memory.dmp
memory/2176-47-0x0000000002250000-0x0000000002260000-memory.dmp
memory/2176-48-0x0000000002240000-0x0000000002252000-memory.dmp
memory/2176-49-0x0000000002260000-0x0000000002278000-memory.dmp
memory/2176-50-0x0000000002290000-0x00000000022A0000-memory.dmp
memory/2176-53-0x000000001AD20000-0x000000001AD32000-memory.dmp
memory/2176-54-0x000000001BAF0000-0x000000001BB2C000-memory.dmp
memory/2176-55-0x000000001BF00000-0x000000001C00A000-memory.dmp
memory/2176-56-0x000000001C1E0000-0x000000001C3A2000-memory.dmp
memory/2176-57-0x00007FFFD3A40000-0x00007FFFD4501000-memory.dmp