| File name: | 2025-05-12-unidentified-malware-and-artifacts (1).zip |
| Full analysis: | https://app.any.run/tasks/5ea83af5-c075-4c5d-a5dd-4b806f563646 |
| Verdict: | Malicious activity |
| Threats: | First identified in March 2021, PureCrypter is a .NET-based loader that employs obfuscation techniques, such as SmartAssembly, to evade detection. It has been used to distribute malware families including AgentTesla, RedLine Stealer, and SnakeKeylogger. The malware is typically delivered through phishing campaigns and malicious downloads, often masquerading as legitimate files with extensions like .mp4 or .pdf. PureCrypter utilizes encryption and compression to conceal its payloads and can inject malicious code into legitimate processes to maintain persistence on the infected system. |
| Analysis date: | May 15, 2025, 20:21:58 |
| OS: | Windows 10 Professional (build: 19044, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/zip |
| File info: | Zip archive data, at least v4.5 to extract, compression method=deflate |
| MD5: | 992C027C5351DFB774AB6B967D0D6855 |
| SHA1: | 4D98DB8C93E2D221C010E52B9315D02EFE5DA084 |
| SHA256: | AAF5D6501B4D90E5551D8484E9EFA47B5F69060B153247C22C18F3B17324F0D9 |
| SSDEEP: | 98304:0oLJbAtTr6tMyG/LRUX3vklKpKPZIjaR97Kj4f6EV7CyAmfNjNQE1i8iZZScCJtr:tQK3Q |
| .zip | | | ZIP compressed archive (100) |
|---|
| ZipRequiredVersion: | 45 |
|---|---|
| ZipBitFlag: | 0x0800 |
| ZipCompression: | Deflated |
| ZipModifyDate: | 2025:05:12 23:33:04 |
| ZipCRC: | 0x00000000 |
| ZipCompressedSize: | 2 |
| ZipUncompressedSize: | - |
| ZipFileName: | 2025-05-12-unidentified-malware-and-artifacts/ |
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 736 | "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe" | C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe | KTMBE25040170.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: .NET Framework installation utility Exit code: 0 Version: 4.8.9037.0 built by: NET481REL1 Modules
| |||||||||||||||
| 2092 | C:\WINDOWS\System32\slui.exe -Embedding | C:\Windows\System32\slui.exe | svchost.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Activation Client Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 2268 | "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe" | C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe | explorer.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: .NET Framework installation utility Exit code: 1073807364 Version: 4.8.9037.0 built by: NET481REL1 Modules
| |||||||||||||||
| 2876 | "C:\Program Files\RUXIM\PLUGscheduler.exe" | C:\Program Files\RUXIM\PLUGScheduler.exe | — | svchost.exe | |||||||||||
User: SYSTEM Company: Microsoft Corporation Integrity Level: SYSTEM Description: Windows Update LifeCycle Component Scheduler Exit code: 0 Version: 10.0.19041.3623 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 4180 | "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe" | C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe | explorer.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: .NET Framework installation utility Exit code: 0 Version: 4.8.9037.0 built by: NET481REL1 Modules
| |||||||||||||||
| 5492 | C:\WINDOWS\Explorer.EXE | C:\Windows\explorer.exe | — | — | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Explorer Exit code: 0 Version: 10.0.19041.3758 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 5868 | "D:\KTMBE25040170.exe" | D:\KTMBE25040170.exe | — | explorer.exe | |||||||||||
User: admin Integrity Level: MEDIUM Description: KTMBE25040170 Exit code: 4294967295 Version: 1.0.6585.21446 Modules
| |||||||||||||||
| 6392 | "C:\WINDOWS\System32\WScript.exe" "C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Count.vbs" | C:\Windows\System32\wscript.exe | — | explorer.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft ® Windows Based Script Host Exit code: 0 Version: 5.812.10240.16384 Modules
| |||||||||||||||
| 6452 | "C:\Users\admin\AppData\Roaming\Count.exe" | C:\Users\admin\AppData\Roaming\Count.exe | — | wscript.exe | |||||||||||
User: admin Integrity Level: MEDIUM Description: KTMBE25040170 Exit code: 4294967295 Version: 1.0.6585.21446 Modules
| |||||||||||||||
| 6492 | "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe" | C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe | explorer.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: .NET Framework installation utility Version: 4.8.9037.0 built by: NET481REL1 Modules
| |||||||||||||||
| (PID) Process: | (5492) explorer.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Security and Maintenance\Checks\{C8E6F269-B90A-4053-A3BE-499AFCEC98C4}.check.0 |
| Operation: | write | Name: | CheckSetting |
Value: 23004100430042006C006F0062000000000000000000000001000000FFFFFFFFFFFF0000 | |||
| (PID) Process: | (5492) explorer.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\SessionInfo\5\ApplicationViewManagement\W32:0000000000040288 |
| Operation: | write | Name: | VirtualDesktop |
Value: 1000000030304456BFA0DB55E4278845B426357D5B5F97B3 | |||
| (PID) Process: | (7488) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory |
| Operation: | write | Name: | 3 |
Value: C:\Users\admin\Desktop\preferences.zip | |||
| (PID) Process: | (7488) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory |
| Operation: | write | Name: | 2 |
Value: C:\Users\admin\Desktop\chromium_ext.zip | |||
| (PID) Process: | (7488) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory |
| Operation: | write | Name: | 1 |
Value: C:\Users\admin\Desktop\omni_23_10_2024_.zip | |||
| (PID) Process: | (7488) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory |
| Operation: | write | Name: | 0 |
Value: C:\Users\admin\AppData\Local\Temp\2025-05-12-unidentified-malware-and-artifacts (1).zip | |||
| (PID) Process: | (7488) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | name |
Value: 120 | |||
| (PID) Process: | (7488) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | size |
Value: 80 | |||
| (PID) Process: | (7488) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | type |
Value: 120 | |||
| (PID) Process: | (7488) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | mtime |
Value: 100 | |||
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 5492 | explorer.exe | C:\Users\admin\AppData\Local\Microsoft\PenWorkspace\DiscoverCacheData.dat | binary | |
MD5:E49C56350AEDF784BFE00E444B879672 | SHA256:A8BD235303668981563DFB5AAE338CB802817C4060E2C199B7C84901D57B7E1E | |||
| 7488 | WinRAR.exe | C:\Users\admin\AppData\Local\Temp\Rar$DRa7488.35825\2025-05-12-unidentified-malware-and-artifacts\invoice_10988.xz | compressed | |
MD5:0B7B89B983B00767C0C60CCEB5032110 | SHA256:341F58943626DEC0CABC58FBEC4F7263125EC1ED75E0C97418CEFE0CA23C6A25 | |||
| 7488 | WinRAR.exe | C:\Users\admin\AppData\Local\Temp\Rar$DRa7488.35825\2025-05-12-unidentified-malware-and-artifacts\invoice_10988.img | binary | |
MD5:2D5E799501ED61B7C03CA303CDE3726F | SHA256:F757FC452DBB8EB564081D3DECFDB31EC24FC4B91E22EE8088CB5884729CC99A | |||
| 7488 | WinRAR.exe | C:\Users\admin\AppData\Local\Temp\Rar$DRa7488.35825\2025-05-12-unidentified-malware-and-artifacts\Count.vbs | text | |
MD5:3101CC711C4BCB3BD586CD9B95D67EAE | SHA256:50B6133499D1CFD459E76FC878A8139B6B0A9DE1F3D83DDF534F0FDB2D120AD4 | |||
| 7488 | WinRAR.exe | C:\Users\admin\AppData\Local\Temp\Rar$DRa7488.35825\2025-05-12-unidentified-malware-and-artifacts\KTMBE25040170.exe | executable | |
MD5:4F475CE89DE8C65BEC36C9D9A01FE0F0 | SHA256:116C096A488F53B298D3BAC99942770AFD3D791AE376534F050E6E4642C2FBB4 | |||
| 7488 | WinRAR.exe | C:\Users\admin\AppData\Local\Temp\Rar$DRa7488.35825\2025-05-12-unidentified-malware-and-artifacts\2025-05-12-IOCs-for-unidentified-malware-infection.txt | text | |
MD5:C27F58F61CF3EBC35BF9B84033B67E99 | SHA256:94B5C59BD9B8A87DC084D58CC109488212B0C526509DF5609095D6E25A5A553F | |||
| 7484 | KTMBE25040170.exe | C:\Users\admin\AppData\Roaming\Count.exe | executable | |
MD5:4F475CE89DE8C65BEC36C9D9A01FE0F0 | SHA256:116C096A488F53B298D3BAC99942770AFD3D791AE376534F050E6E4642C2FBB4 | |||
| 7484 | KTMBE25040170.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Count.vbs | text | |
MD5:3101CC711C4BCB3BD586CD9B95D67EAE | SHA256:50B6133499D1CFD459E76FC878A8139B6B0A9DE1F3D83DDF534F0FDB2D120AD4 | |||
| 2876 | PLUGScheduler.exe | C:\ProgramData\PLUG\Logs\RUXIMLog.045.etl | binary | |
MD5:89BD161BF7B46C9078937CF832786737 | SHA256:2B83DF5532E9F54ED301C8F82E2CDD489799C8D5222A2D44C97DCB151A96FAA9 | |||
| 2876 | PLUGScheduler.exe | C:\ProgramData\PLUG\Logs\RUXIMLog.046.etl | binary | |
MD5:A7A21FBC9D00F33F186B34A50E170C13 | SHA256:64CAC91E46D4FC832958232A658431CBF9D8D9F265653ACA2BEB32428D4688EC | |||
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
5496 | MoUsoCoreWorker.exe | GET | 200 | 2.19.11.105:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
5496 | MoUsoCoreWorker.exe | GET | 200 | 2.23.246.101:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
6544 | svchost.exe | GET | 200 | 2.17.190.73:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | unknown | — | — | whitelisted |
8084 | SIHClient.exe | GET | 200 | 23.219.150.101:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl | unknown | — | — | whitelisted |
8084 | SIHClient.exe | GET | 200 | 23.219.150.101:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl | unknown | — | — | whitelisted |
2924 | SearchApp.exe | GET | 200 | 2.17.190.73:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D | unknown | — | — | whitelisted |
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
— | — | 51.104.136.2:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
5496 | MoUsoCoreWorker.exe | 2.19.11.105:80 | crl.microsoft.com | Elisa Oyj | NL | whitelisted |
5496 | MoUsoCoreWorker.exe | 2.23.246.101:80 | www.microsoft.com | Ooredoo Q.S.C. | QA | whitelisted |
— | — | 172.211.123.250:443 | client.wns.windows.com | MICROSOFT-CORP-MSN-AS-BLOCK | FR | whitelisted |
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
6544 | svchost.exe | 40.126.31.0:443 | login.live.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
6544 | svchost.exe | 2.17.190.73:80 | ocsp.digicert.com | AKAMAI-AS | DE | whitelisted |
2104 | svchost.exe | 51.104.136.2:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
2112 | svchost.exe | 51.104.136.2:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
client.wns.windows.com |
| whitelisted |
login.live.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
slscr.update.microsoft.com |
| whitelisted |
fe3cr.delivery.mp.microsoft.com |
| whitelisted |
mxcnss.dns04.com |
| unknown |
PID | Process | Class | Message |
|---|---|---|---|
2268 | InstallUtil.exe | Misc Attack | ET DROP Spamhaus DROP Listed Traffic Inbound group 31 |