| File name: | 5aafd78c24d92f25dd27dfea5492fa2212d52586af05400e55853f3f2218de8d |
| Full analysis: | https://app.any.run/tasks/f6b3d082-d95f-4a82-8165-a1b38d00559b |
| 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, 18:08:37 |
| OS: | Windows 10 Professional (build: 19045, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/vnd.microsoft.portable-executable |
| File info: | PE32 executable (GUI) Intel 80386, for MS Windows, 5 sections |
| MD5: | 57E3EC29544A0C1841BA8C9BEF860CF9 |
| SHA1: | C1C1AC0421A0B16D07C412F8957335348F24A64B |
| SHA256: | 5AAFD78C24D92F25DD27DFEA5492FA2212D52586AF05400E55853F3F2218DE8D |
| SSDEEP: | 49152:nHlGAXWQkC2R/QORBt7QjFtmcaTH/vU4do9Pcjq1GvXB1sgPR8N32+Rr181vWDZX:cAGQX21RBt7QjTmcaTH/vU4do9Pcjq1A |
MALICIOUS
PURECRYPTER has been detected (YARA)
- RegSvcs.exe (PID: 900)
SUSPICIOUS
Connects to unusual port
- RegSvcs.exe (PID: 900)
INFO
Checks supported languages
- 5aafd78c24d92f25dd27dfea5492fa2212d52586af05400e55853f3f2218de8d.exe (PID: 3812)
- RegSvcs.exe (PID: 900)
Reads mouse settings
- 5aafd78c24d92f25dd27dfea5492fa2212d52586af05400e55853f3f2218de8d.exe (PID: 3812)
The sample compiled with english language support
- 5aafd78c24d92f25dd27dfea5492fa2212d52586af05400e55853f3f2218de8d.exe (PID: 3812)
Reads the computer name
- RegSvcs.exe (PID: 900)
Create files in a temporary directory
- 5aafd78c24d92f25dd27dfea5492fa2212d52586af05400e55853f3f2218de8d.exe (PID: 3812)
.NET Reactor protector has been detected
- RegSvcs.exe (PID: 900)
Reads the machine GUID from the registry
- RegSvcs.exe (PID: 900)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Win64 Executable (generic) (64.6) |
|---|---|---|
| .dll | | | Win32 Dynamic Link Library (generic) (15.4) |
| .exe | | | Win32 Executable (generic) (10.5) |
| .exe | | | Generic Win/DOS Executable (4.6) |
| .exe | | | DOS Executable Generic (4.6) |
EXIF
EXE
| CharacterSet: | Unicode |
|---|---|
| LanguageCode: | English (British) |
| FileSubtype: | - |
| ObjectFileType: | Executable application |
| FileOS: | Win32 |
| FileFlags: | (none) |
| FileFlagsMask: | 0x0000 |
| ProductVersionNumber: | 0.0.0.0 |
| FileVersionNumber: | 0.0.0.0 |
| Subsystem: | Windows GUI |
| SubsystemVersion: | 5.1 |
| ImageVersion: | - |
| OSVersion: | 5.1 |
| EntryPoint: | 0x27dcd |
| UninitializedDataSize: | - |
| InitializedDataSize: | 768000 |
| CodeSize: | 581120 |
| LinkerVersion: | 12 |
| PEType: | PE32 |
| ImageFileCharacteristics: | Executable, Large address aware, 32-bit |
| TimeStamp: | 2024:12:03 10:25:03+00:00 |
| MachineType: | Intel 386 or later, and compatibles |
Total processes
132
Monitored processes
2
Malicious processes
2
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3812 | "C:\Users\admin\AppData\Local\Temp\5aafd78c24d92f25dd27dfea5492fa2212d52586af05400e55853f3f2218de8d.exe" | C:\Users\admin\AppData\Local\Temp\5aafd78c24d92f25dd27dfea5492fa2212d52586af05400e55853f3f2218de8d.exe | — | explorer.exe | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 900 | "C:\Users\admin\AppData\Local\Temp\5aafd78c24d92f25dd27dfea5492fa2212d52586af05400e55853f3f2218de8d.exe" | C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe | 5aafd78c24d92f25dd27dfea5492fa2212d52586af05400e55853f3f2218de8d.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft .NET Services Installation Utility Version: 4.8.9037.0 built by: NET481REL1 Modules
| |||||||||||||||
Total events
294
Read events
294
Write events
0
Delete events
0
Modification events
Executable files
0
Suspicious files
2
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 3812 | 5aafd78c24d92f25dd27dfea5492fa2212d52586af05400e55853f3f2218de8d.exe | C:\Users\admin\AppData\Local\Temp\resharpen | binary | |
MD5:9E8E6E8BF8B55809DDF551D1D16480E7 | SHA256:15BFA8A34C8A324382A03B8C6B46DED860B2DBE912483C31FDFE59837998662B | |||
| 3812 | 5aafd78c24d92f25dd27dfea5492fa2212d52586af05400e55853f3f2218de8d.exe | C:\Users\admin\AppData\Local\Temp\aut72F1.tmp | binary | |
MD5:9E8E6E8BF8B55809DDF551D1D16480E7 | SHA256:15BFA8A34C8A324382A03B8C6B46DED860B2DBE912483C31FDFE59837998662B | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
7
TCP/UDP connections
38
DNS requests
22
Threats
0
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
5064 | SearchApp.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D | unknown | — | — | whitelisted |
3040 | svchost.exe | GET | 200 | 69.192.161.161:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
1176 | svchost.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | unknown | — | — | whitelisted |
2212 | SIHClient.exe | GET | 200 | 2.23.246.101:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl | unknown | — | — | whitelisted |
2212 | SIHClient.exe | GET | 200 | 2.23.246.101:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl | unknown | — | — | whitelisted |
4952 | backgroundTaskHost.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAUZZSZEml49Gjh0j13P68w%3D | unknown | — | — | whitelisted |
3040 | svchost.exe | GET | 200 | 23.48.23.141:80 | 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 |
|---|---|---|---|---|---|---|
— | — | 92.123.104.34:443 | www.bing.com | Akamai International B.V. | DE | whitelisted |
4712 | MoUsoCoreWorker.exe | 20.73.194.208:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
3040 | svchost.exe | 20.73.194.208:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
2212 | RUXIMICS.exe | 20.73.194.208:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
3040 | svchost.exe | 40.127.240.158:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
900 | RegSvcs.exe | 163.5.32.40:7702 | — | — | FR | unknown |
3040 | svchost.exe | 23.48.23.141:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
3040 | svchost.exe | 69.192.161.161:80 | www.microsoft.com | AKAMAI-AS | DE | whitelisted |
5064 | SearchApp.exe | 92.123.104.63:443 | www.bing.com | Akamai International B.V. | DE | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
www.bing.com |
| whitelisted |
settings-win.data.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
login.live.com |
| whitelisted |
go.microsoft.com |
| whitelisted |
slscr.update.microsoft.com |
| whitelisted |
fe3cr.delivery.mp.microsoft.com |
| whitelisted |