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| File name: | ByRR Crypter & Binder.rar |
| Full analysis: | https://app.any.run/tasks/8dd9f78a-d38c-467e-855f-a4ac9dc8fe57 |
| Verdict: | Malicious activity |
| Threats: | AsyncRAT is a RAT that can monitor and remotely control infected systems. This malware was introduced on Github as a legitimate open-source remote administration software, but hackers use it for its many powerful malicious functions. |
| Analysis date: | March 23, 2021, 07:46:17 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-rar |
| File info: | RAR archive data, v5 |
| MD5: | 4EE2CD532CD36307AE7ACA567CD92317 |
| SHA1: | EE5F68830DC14DF7D071BEDF59AEA628C2CC1E24 |
| SHA256: | C1A7CB86235EDF4EF81198CC426FB569ADDF85C2F8E7F4A9575B0DD956100CA4 |
| SSDEEP: | 12288:MdcEt2UVToRfh12duWlXM0DomHCvD3/5/Mp0Q:gcCV2h12duKc0Domib9Mp1 |
| .rar | | | RAR compressed archive (v5.0) (61.5) |
|---|---|---|
| .rar | | | RAR compressed archive (gen) (38.4) |
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2432 | "C:\ProgramData\wermgr.exe" | C:\ProgramData\wermgr.exe | ByRR FUD Crypter and Binder.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Problem Reporting Exit code: 0 Version: 10.0.19141.785 Modules
| |||||||||||||||
| 2588 | "C:\Program Files\WinRAR\WinRAR.exe" "C:\Users\admin\AppData\Local\Temp\ByRR Crypter & Binder.rar" | C:\Program Files\WinRAR\WinRAR.exe | explorer.exe | ||||||||||||
User: admin Company: Alexander Roshal Integrity Level: MEDIUM Description: WinRAR archiver Exit code: 0 Version: 5.60.0 Modules
| |||||||||||||||
| 2960 | "C:\Users\admin\Desktop\ByRR FUD Crypter and Binder.exe" | C:\Users\admin\Desktop\ByRR FUD Crypter and Binder.exe | explorer.exe | ||||||||||||
User: admin Company: ByRR Integrity Level: MEDIUM Description: ByRR FUD Crypter and Binder Exit code: 0 Version: 3.1.2.1 Modules
| |||||||||||||||
| 3872 | "C:\ProgramData\ByRR FUD Crypter and Binder.exe" | C:\ProgramData\ByRR FUD Crypter and Binder.exe | ByRR FUD Crypter and Binder.exe | ||||||||||||
User: admin Company: ByRR Integrity Level: MEDIUM Description: ByRR FUD Crypter and Binder Exit code: 0 Version: 3.1.2.1 Modules
| |||||||||||||||
| 3892 | "C:\Users\admin\Desktop\fgj.exe" | C:\Users\admin\Desktop\fgj.exe | explorer.exe | ||||||||||||
User: admin Company: ByRR Integrity Level: MEDIUM Description: ByRR Stub Exit code: 0 Version: 1.0.2.1 Modules
| |||||||||||||||
| (PID) Process: | (2588) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\Interface\Themes |
| Operation: | write | Name: | ShellExtBMP |
Value: | |||
| (PID) Process: | (2588) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\Interface\Themes |
| Operation: | write | Name: | ShellExtIcon |
Value: | |||
| (PID) Process: | (2588) WinRAR.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\13D\52C64B7E |
| Operation: | write | Name: | LanguageList |
Value: en-US | |||
| (PID) Process: | (2588) WinRAR.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\13D\52C64B7E |
| Operation: | write | Name: | @C:\Windows\system32\NetworkExplorer.dll,-1 |
Value: Network | |||
| (PID) Process: | (2588) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\Interface |
| Operation: | write | Name: | ShowPassword |
Value: 0 | |||
| (PID) Process: | (2588) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\Interface |
| Operation: | write | Name: | ShowPassword |
Value: 1 | |||
| (PID) Process: | (2588) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\ArcHistory |
| Operation: | write | Name: | 0 |
Value: C:\Users\admin\AppData\Local\Temp\ByRR Crypter & Binder.rar | |||
| (PID) Process: | (2588) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | name |
Value: 120 | |||
| (PID) Process: | (2588) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | size |
Value: 80 | |||
| (PID) Process: | (2588) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | type |
Value: 120 | |||
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2432 | wermgr.exe | C:\Users\admin\AppData\Local\Temp\CabC112.tmp | — | |
MD5:— | SHA256:— | |||
| 2432 | wermgr.exe | C:\Users\admin\AppData\Local\Temp\TarC113.tmp | — | |
MD5:— | SHA256:— | |||
| 2432 | wermgr.exe | C:\Users\admin\AppData\Local\Temp\CabC143.tmp | — | |
MD5:— | SHA256:— | |||
| 2432 | wermgr.exe | C:\Users\admin\AppData\Local\Temp\TarC144.tmp | — | |
MD5:— | SHA256:— | |||
| 2432 | wermgr.exe | C:\Users\admin\AppData\Local\Temp\CabC1B3.tmp | — | |
MD5:— | SHA256:— | |||
| 2432 | wermgr.exe | C:\Users\admin\AppData\Local\Temp\TarC1B4.tmp | — | |
MD5:— | SHA256:— | |||
| 2432 | wermgr.exe | C:\Users\admin\AppData\Local\Temp\CabC212.tmp | — | |
MD5:— | SHA256:— | |||
| 2432 | wermgr.exe | C:\Users\admin\AppData\Local\Temp\TarC213.tmp | — | |
MD5:— | SHA256:— | |||
| 2432 | wermgr.exe | C:\Users\admin\AppData\Local\Temp\CabC253.tmp | — | |
MD5:— | SHA256:— | |||
| 2432 | wermgr.exe | C:\Users\admin\AppData\Local\Temp\TarC254.tmp | — | |
MD5:— | SHA256:— | |||
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
2432 | wermgr.exe | GET | 200 | 8.253.95.249:80 | http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab | US | compressed | 57.2 Kb | whitelisted |
2432 | wermgr.exe | GET | 304 | 8.253.95.249:80 | http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab | US | compressed | 57.2 Kb | whitelisted |
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
2432 | wermgr.exe | 104.21.17.70:443 | paste.tc | Cloudflare Inc | US | unknown |
— | — | 8.253.95.249:80 | www.download.windowsupdate.com | Global Crossing | US | suspicious |
2432 | wermgr.exe | 3.141.210.37:14186 | 6.tcp.ngrok.io | — | US | malicious |
Domain | IP | Reputation |
|---|---|---|
paste.tc |
| unknown |
6.tcp.ngrok.io |
| malicious |
www.download.windowsupdate.com |
| whitelisted |
PID | Process | Class | Message |
|---|---|---|---|
1052 | svchost.exe | Potential Corporate Privacy Violation | ET POLICY DNS Query to a *.ngrok domain (ngrok.io) |
2432 | wermgr.exe | A Network Trojan was detected | SUSPICIOUS [PTsecurity] Possible AsyncRAT/Quasar SSL certificate |
2432 | wermgr.exe | A Network Trojan was detected | REMOTE [PTsecurity] AsyncRAT Connection |