| File name: | orcus_premium.rar |
| Full analysis: | https://app.any.run/tasks/57445472-a4cb-4614-b576-9ae4ce2f6cf8 |
| Verdict: | Malicious activity |
| Threats: | Orcus is a modular Remote Access Trojan with some unusual functions. This RAT enables attackers to create plugins using a custom development library and offers a robust core feature set that makes it one of the most dangerous malicious programs in its class. |
| Analysis date: | January 24, 2022, 15:48:15 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-rar |
| File info: | RAR archive data, v5 |
| MD5: | C17C457C5B4E869466BB3F0BBB8F2801 |
| SHA1: | 923070A1DAE11B1E5D020D6532330CCEB417FCD1 |
| SHA256: | 8AF4B7F47E3848815DC1D5D47CEB8A7F68542F39222A2AB6B01BD23D6E2D7D01 |
| SSDEEP: | 24576:ohQqUHMSlgyHEmdL+ZBSeA2xkLEfoT95LarEL:PMSCyHDMVxq75Gu |
| .rar | | | RAR compressed archive (v5.0) (61.5) |
|---|---|---|
| .rar | | | RAR compressed archive (gen) (38.4) |
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 120 | "C:\Users\admin\Desktop\orcus_premium.exe" | C:\Users\admin\Desktop\orcus_premium.exe | — | Explorer.EXE | |||||||||||
User: admin Company: Synaptics Integrity Level: MEDIUM Description: Synaptics Pointing Device Driver Exit code: 0 Version: 1.0.0.4 Modules
| |||||||||||||||
| 568 | "C:\Users\admin\Desktop\._cache_orcus_premium.exe" | C:\Users\admin\Desktop\._cache_orcus_premium.exe | orcus_premium.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Version: 1.0.0.0 Modules
| |||||||||||||||
| 652 | "C:\Users\admin\Desktop\orcus_premium.exe" | C:\Users\admin\Desktop\orcus_premium.exe | — | Explorer.EXE | |||||||||||
User: admin Company: Synaptics Integrity Level: MEDIUM Description: Synaptics Pointing Device Driver Exit code: 0 Version: 1.0.0.4 Modules
| |||||||||||||||
| 1292 | "C:\Users\admin\Desktop\._cache_orcus_premium.exe" | C:\Users\admin\Desktop\._cache_orcus_premium.exe | orcus_premium.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Version: 1.0.0.0 Modules
| |||||||||||||||
| 1556 | "C:\Users\admin\Desktop\._cache_orcus_premium.exe" | C:\Users\admin\Desktop\._cache_orcus_premium.exe | orcus_premium.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Version: 1.0.0.0 Modules
| |||||||||||||||
| 1704 | "C:\Users\admin\Desktop\orcus_premium.exe" | C:\Users\admin\Desktop\orcus_premium.exe | — | Explorer.EXE | |||||||||||
User: admin Company: Synaptics Integrity Level: MEDIUM Description: Synaptics Pointing Device Driver Exit code: 0 Version: 1.0.0.4 Modules
| |||||||||||||||
| 1748 | "C:\Users\admin\Desktop\orcus_premium.exe" | C:\Users\admin\Desktop\orcus_premium.exe | — | Explorer.EXE | |||||||||||
User: admin Company: Synaptics Integrity Level: MEDIUM Description: Synaptics Pointing Device Driver Exit code: 0 Version: 1.0.0.4 Modules
| |||||||||||||||
| 1876 | "C:\Users\admin\Desktop\._cache_orcus_premium.exe" | C:\Users\admin\Desktop\._cache_orcus_premium.exe | orcus_premium.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Version: 1.0.0.0 Modules
| |||||||||||||||
| 2044 | "C:\Users\admin\AppData\Local\Temp\Rar$EXa2532.46075\orcus_premium.exe" | C:\Users\admin\AppData\Local\Temp\Rar$EXa2532.46075\orcus_premium.exe | WinRAR.exe | ||||||||||||
User: admin Company: Synaptics Integrity Level: MEDIUM Description: Synaptics Pointing Device Driver Exit code: 0 Version: 1.0.0.4 Modules
| |||||||||||||||
| 2152 | "C:\Users\admin\Desktop\orcus_premium.exe" | C:\Users\admin\Desktop\orcus_premium.exe | — | Explorer.EXE | |||||||||||
User: admin Company: Synaptics Integrity Level: MEDIUM Description: Synaptics Pointing Device Driver Exit code: 0 Version: 1.0.0.4 Modules
| |||||||||||||||
| (PID) Process: | (2532) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\Interface\Themes |
| Operation: | write | Name: | ShellExtBMP |
Value: | |||
| (PID) Process: | (2532) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\Interface\Themes |
| Operation: | write | Name: | ShellExtIcon |
Value: | |||
| (PID) Process: | (2532) WinRAR.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\16C\52C64B7E |
| Operation: | write | Name: | LanguageList |
Value: en-US | |||
| (PID) Process: | (2532) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\ArcHistory |
| Operation: | write | Name: | 2 |
Value: C:\Users\admin\Desktop\virtio_ivshmem_master_build.zip | |||
| (PID) Process: | (2532) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\ArcHistory |
| Operation: | write | Name: | 1 |
Value: C:\Users\admin\Desktop\Win7-KB3191566-x86.zip | |||
| (PID) Process: | (2532) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\ArcHistory |
| Operation: | write | Name: | 0 |
Value: C:\Users\admin\AppData\Local\Temp\orcus_premium.rar | |||
| (PID) Process: | (2532) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | name |
Value: 120 | |||
| (PID) Process: | (2532) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | size |
Value: 80 | |||
| (PID) Process: | (2532) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | type |
Value: 120 | |||
| (PID) Process: | (2532) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | mtime |
Value: 100 | |||
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2532 | WinRAR.exe | C:\Users\admin\AppData\Local\Temp\Rar$EXa2532.46018\orcus_premium.exe | executable | |
MD5:— | SHA256:— | |||
| 2532 | WinRAR.exe | C:\Users\admin\AppData\Local\Temp\Rar$EXa2532.46075\orcus_premium.exe | executable | |
MD5:— | SHA256:— | |||
| 2532 | WinRAR.exe | C:\Users\admin\AppData\Local\Temp\orcus_premium.bak2532.46690 | compressed | |
MD5:— | SHA256:— | |||
| 2612 | orcus_premium.exe | C:\ProgramData\Synaptics\RCXFFFE.tmp | executable | |
MD5:— | SHA256:— | |||
| 2532 | WinRAR.exe | C:\Users\admin\AppData\Local\Temp\orcus_premium.rar | compressed | |
MD5:— | SHA256:— | |||
| 2640 | orcus_premium.exe | C:\Users\admin\Desktop\._cache_orcus_premium.exe | executable | |
MD5:— | SHA256:— | |||
| 2532 | WinRAR.exe | C:\Users\admin\AppData\Local\Temp\orcus_premium.bak2532.46859 | compressed | |
MD5:— | SHA256:— | |||
| 2532 | WinRAR.exe | C:\Users\admin\AppData\Local\Temp\__rar_2532.46817 | compressed | |
MD5:— | SHA256:— | |||
| 2532 | WinRAR.exe | C:\Users\admin\AppData\Local\Temp\Rar$DRa2532.48625\orcus_premium.exe | executable | |
MD5:— | SHA256:— | |||
| 4016 | Synaptics.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\646C991C2A28825F3CC56E0A1D1E3FA9 | binary | |
MD5:— | SHA256:— | |||
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
4016 | Synaptics.exe | GET | — | 69.42.215.252:80 | http://freedns.afraid.org/api/?action=getdyndns&sha=a30fa98efc092684e8d1c5cff797bcc613562978 | US | — | — | malicious |
4016 | Synaptics.exe | GET | 200 | 142.250.184.195:80 | http://crl.pki.goog/gsr1/gsr1.crl | US | der | 1.61 Kb | whitelisted |
4016 | Synaptics.exe | GET | 200 | 142.250.184.195:80 | http://ocsp.pki.goog/gts1c3/MFIwUDBOMEwwSjAJBgUrDgMCGgUABBTHLnmK3f9hNLO67UdCuLvGwCQHYwQUinR%2Fr4XN7pXNPZzQ4kYU83E1HScCEQC04WHG3wyS9QoAAAABK3x8 | US | der | 472 b | whitelisted |
4016 | Synaptics.exe | GET | 200 | 142.250.184.195:80 | http://ocsp.pki.goog/gtsr1/ME4wTDBKMEgwRjAJBgUrDgMCGgUABBQwkcLWD4LqGJ7bE7B1XZsEbmfwUAQU5K8rJnEaK0gnhS9SZizv8IkTcT4CDQIDvFNZazTHGPUBUGY%3D | US | der | 724 b | whitelisted |
2464 | ._cache_orcus_premium.exe | GET | 200 | 2.16.106.171:80 | http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab?a0a1c65e6b1310f9 | unknown | compressed | 59.9 Kb | whitelisted |
4016 | Synaptics.exe | GET | 200 | 2.16.106.233:80 | http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/disallowedcertstl.cab?d8826548d56b5756 | unknown | compressed | 4.70 Kb | whitelisted |
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
2464 | ._cache_orcus_premium.exe | 2.16.106.171:80 | ctldl.windowsupdate.com | Akamai International B.V. | — | whitelisted |
2464 | ._cache_orcus_premium.exe | 3.129.187.220:13565 | 4.tcp.ngrok.io | — | US | malicious |
— | — | 192.168.100.2:53 | — | — | — | whitelisted |
4016 | Synaptics.exe | 142.250.185.78:443 | docs.google.com | Google Inc. | US | whitelisted |
4016 | Synaptics.exe | 2.16.106.233:80 | ctldl.windowsupdate.com | Akamai International B.V. | — | whitelisted |
4016 | Synaptics.exe | 69.42.215.252:80 | freedns.afraid.org | Awknet Communications, LLC | US | malicious |
4016 | Synaptics.exe | 142.250.184.195:80 | ocsp.pki.goog | Google Inc. | US | whitelisted |
Domain | IP | Reputation |
|---|---|---|
www.microsoft.com |
| whitelisted |
4.tcp.ngrok.io |
| malicious |
xred.mooo.com |
| suspicious |
ctldl.windowsupdate.com |
| whitelisted |
freedns.afraid.org |
| malicious |
docs.google.com |
| shared |
ocsp.pki.goog |
| whitelisted |
crl.pki.goog |
| whitelisted |
PID | Process | Class | Message |
|---|---|---|---|
— | — | Potential Corporate Privacy Violation | ET POLICY DNS Query to a *.ngrok domain (ngrok.io) |
— | — | Misc activity | ET INFO DYNAMIC_DNS Query to Abused Domain *.mooo.com |