| File name: | 6bc56ab296cfe474c4998145fa61b5cd1ffeb03c8a19f689f2fc00b1b1791dd9 |
| Full analysis: | https://app.any.run/tasks/3c88cb18-869c-40b7-879d-c6853aedb920 |
| 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: | January 10, 2025, 19:04:16 |
| OS: | Windows 10 Professional (build: 19045, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/vnd.microsoft.portable-executable |
| File info: | PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows, 3 sections |
| MD5: | 1DFAD1D511AF50821A27DAE717E43E75 |
| SHA1: | 0D20CE843D5D9D0C77378689491D78DFBFC7F632 |
| SHA256: | 6BC56AB296CFE474C4998145FA61B5CD1FFEB03C8A19F689F2FC00B1B1791DD9 |
| SSDEEP: | 98304:mgVqfTQUZCQe13Nnb+BfWeLD6urb8kYV7BLM86cpuuWhzj9UeRPgplarJTyIwrBE:mgo398if |
MALICIOUS
PURECRYPTER has been detected (YARA)
- InstallUtil.exe (PID: 6364)
SUSPICIOUS
Executable content was dropped or overwritten
- 6bc56ab296cfe474c4998145fa61b5cd1ffeb03c8a19f689f2fc00b1b1791dd9.exe (PID: 6220)
Connects to unusual port
- InstallUtil.exe (PID: 6364)
INFO
Reads the machine GUID from the registry
- InstallUtil.exe (PID: 6364)
- 6bc56ab296cfe474c4998145fa61b5cd1ffeb03c8a19f689f2fc00b1b1791dd9.exe (PID: 6220)
Checks supported languages
- 6bc56ab296cfe474c4998145fa61b5cd1ffeb03c8a19f689f2fc00b1b1791dd9.exe (PID: 6220)
- InstallUtil.exe (PID: 6364)
Manual execution by a user
- InstallUtil.exe (PID: 6364)
.NET Reactor protector has been detected
- InstallUtil.exe (PID: 6364)
Reads the computer name
- 6bc56ab296cfe474c4998145fa61b5cd1ffeb03c8a19f689f2fc00b1b1791dd9.exe (PID: 6220)
- InstallUtil.exe (PID: 6364)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Generic CIL Executable (.NET, Mono, etc.) (56.7) |
|---|---|---|
| .exe | | | Win64 Executable (generic) (21.3) |
| .scr | | | Windows screen saver (10.1) |
| .dll | | | Win32 Dynamic Link Library (generic) (5) |
| .exe | | | Win32 Executable (generic) (3.4) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2024:12:06 11:46:18+00:00 |
| ImageFileCharacteristics: | Executable, No line numbers, No symbols, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 6 |
| CodeSize: | 2127360 |
| InitializedDataSize: | 2048 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x2095b6 |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 1.0.0.0 |
| ProductVersionNumber: | 1.0.0.0 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Win32 |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | Neutral |
| CharacterSet: | Unicode |
| Comments: | - |
| CompanyName: | - |
| FileDescription: | Dec SOA 1 |
| FileVersion: | 1.0.0.0 |
| InternalName: | Dec SOA 1.exe |
| LegalCopyright: | Copyright © 2023 |
| LegalTrademarks: | - |
| OriginalFileName: | Dec SOA 1.exe |
| ProductName: | Dec SOA 1 |
| ProductVersion: | 1.0.0.0 |
| AssemblyVersion: | 1.0.0.0 |
Total processes
127
Monitored processes
2
Malicious processes
1
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 6220 | "C:\Users\admin\AppData\Local\Temp\6bc56ab296cfe474c4998145fa61b5cd1ffeb03c8a19f689f2fc00b1b1791dd9.exe" | C:\Users\admin\AppData\Local\Temp\6bc56ab296cfe474c4998145fa61b5cd1ffeb03c8a19f689f2fc00b1b1791dd9.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Description: Dec SOA 1 Exit code: 4294967295 Version: 1.0.0.0 Modules
| |||||||||||||||
| 6364 | "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
| |||||||||||||||
Total events
413
Read events
413
Write events
0
Delete events
0
Modification events
Executable files
1
Suspicious files
0
Text files
1
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 6220 | 6bc56ab296cfe474c4998145fa61b5cd1ffeb03c8a19f689f2fc00b1b1791dd9.exe | C:\Users\admin\AppData\Roaming\TypeId.exe | executable | |
MD5:1DFAD1D511AF50821A27DAE717E43E75 | SHA256:6BC56AB296CFE474C4998145FA61B5CD1FFEB03C8A19F689F2FC00B1B1791DD9 | |||
| 6220 | 6bc56ab296cfe474c4998145fa61b5cd1ffeb03c8a19f689f2fc00b1b1791dd9.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\TypeId.vbs | text | |
MD5:9D608CD1F64AE38186AE154430E32471 | SHA256:6908DE6483DBD6A873DA9F4B4F4044FBFA3545A81CCDFA0B55EECE80BE8EE160 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
9
TCP/UDP connections
35
DNS requests
16
Threats
0
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
3688 | backgroundTaskHost.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAUZZSZEml49Gjh0j13P68w%3D | unknown | — | — | whitelisted |
6960 | SIHClient.exe | GET | 200 | 23.35.229.160:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl | unknown | — | — | whitelisted |
4712 | MoUsoCoreWorker.exe | GET | 200 | 23.35.229.160:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
4328 | svchost.exe | GET | 200 | 23.35.229.160:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
— | — | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D | unknown | — | — | whitelisted |
6960 | SIHClient.exe | GET | 200 | 23.35.229.160:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl | unknown | — | — | whitelisted |
1176 | svchost.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | unknown | — | — | whitelisted |
4328 | svchost.exe | GET | 200 | 23.48.23.191:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
4712 | MoUsoCoreWorker.exe | GET | 200 | 23.48.23.191:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
4712 | MoUsoCoreWorker.exe | 23.48.23.191:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
4328 | svchost.exe | 23.48.23.191:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
4712 | MoUsoCoreWorker.exe | 23.35.229.160:80 | www.microsoft.com | AKAMAI-AS | DE | whitelisted |
4328 | svchost.exe | 23.35.229.160:80 | www.microsoft.com | AKAMAI-AS | DE | whitelisted |
— | — | 40.127.240.158:443 | — | MICROSOFT-CORP-MSN-AS-BLOCK | IE | unknown |
5064 | SearchApp.exe | 92.123.104.32:443 | www.bing.com | Akamai International B.V. | DE | whitelisted |
— | — | 192.229.221.95:80 | ocsp.digicert.com | EDGECAST | US | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
1076 | svchost.exe | 23.35.238.131:443 | go.microsoft.com | AKAMAI-AS | DE | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
crl.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
www.bing.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
go.microsoft.com |
| whitelisted |
login.live.com |
| whitelisted |
settings-win.data.microsoft.com |
| whitelisted |
arc.msn.com |
| whitelisted |
fd.api.iris.microsoft.com |
| whitelisted |