File name: | 2acfce51d24f1407a373546e2e0e76e56c73599e504bb714761de0032a3ce990 |
Full analysis: | https://app.any.run/tasks/70ca54e9-5f33-4cea-88ad-77c446b915a5 |
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, 22:15:43 |
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: | 3731B50AEC928007AE020003C83EC4E5 |
SHA1: | CA52A10CB044DB5848774F8EF02930D86928A13E |
SHA256: | 2ACFCE51D24F1407A373546E2E0E76E56C73599E504BB714761DE0032A3CE990 |
SSDEEP: | 49152:lfZFk2fjNf0EcHvjB5Rw8MHUZtZz00TQnkKIK9qqBcZ4nX9I0HvsFzE8E+H5ylyU:nFkCFcPj/vEUZtO0Sd9L0UrsFzE8NlPU |
.exe | | | Generic CIL Executable (.NET, Mono, etc.) (62) |
---|---|---|
.exe | | | Win64 Executable (generic) (23.3) |
.dll | | | Win32 Dynamic Link Library (generic) (5.5) |
.exe | | | Win32 Executable (generic) (3.8) |
.exe | | | Win16/32 Executable Delphi generic (1.7) |
AssemblyVersion: | 1.0.0.0 |
---|---|
ProductVersion: | 1.0.0.0 |
ProductName: | Umyhpjsztb |
OriginalFileName: | Umyhpjsztb.exe |
LegalTrademarks: | - |
LegalCopyright: | Copyright © 2010 |
InternalName: | Umyhpjsztb.exe |
FileVersion: | 1.0.0.0 |
FileDescription: | Umyhpjsztb |
CompanyName: | - |
Comments: | - |
CharacterSet: | Unicode |
LanguageCode: | Neutral |
FileSubtype: | - |
ObjectFileType: | Executable application |
FileOS: | Win32 |
FileFlags: | (none) |
FileFlagsMask: | 0x003f |
ProductVersionNumber: | 1.0.0.0 |
FileVersionNumber: | 1.0.0.0 |
Subsystem: | Windows GUI |
SubsystemVersion: | 4 |
ImageVersion: | - |
OSVersion: | 4 |
EntryPoint: | 0x1774ee |
UninitializedDataSize: | - |
InitializedDataSize: | 2048 |
CodeSize: | 1529344 |
LinkerVersion: | 8 |
PEType: | PE32 |
ImageFileCharacteristics: | Executable, 32-bit |
TimeStamp: | 2024:12:12 08:08:25+00:00 |
MachineType: | Intel 386 or later, and compatibles |
PID | CMD | Path | Indicators | Parent process | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1200 | "C:\Users\admin\AppData\Local\Temp\2acfce51d24f1407a373546e2e0e76e56c73599e504bb714761de0032a3ce990.exe" | C:\Users\admin\AppData\Local\Temp\2acfce51d24f1407a373546e2e0e76e56c73599e504bb714761de0032a3ce990.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Description: Umyhpjsztb Exit code: 4294967295 Version: 1.0.0.0 Modules
| |||||||||||||||
6476 | "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
|
PID | Process | Filename | Type | |
---|---|---|---|---|
1200 | 2acfce51d24f1407a373546e2e0e76e56c73599e504bb714761de0032a3ce990.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\saas.vbs | text | |
MD5:FBA0E7C6F898BE40969614EF8D2FAD5F | SHA256:E2718B990951715F11E4C67E85FBCC5B7853FA43E3E5B7389DA71B3C627012D0 | |||
1200 | 2acfce51d24f1407a373546e2e0e76e56c73599e504bb714761de0032a3ce990.exe | C:\Users\admin\AppData\Roaming\saas.exe | executable | |
MD5:3731B50AEC928007AE020003C83EC4E5 | SHA256:2ACFCE51D24F1407A373546E2E0E76E56C73599E504BB714761DE0032A3CE990 |
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
---|---|---|---|---|---|---|---|---|---|
— | — | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D | unknown | — | — | whitelisted |
1176 | svchost.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | unknown | — | — | whitelisted |
4712 | MoUsoCoreWorker.exe | GET | 200 | 23.48.23.166:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
6996 | SIHClient.exe | GET | 200 | 23.52.120.96:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl | unknown | — | — | whitelisted |
4712 | MoUsoCoreWorker.exe | GET | 200 | 23.52.120.96:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
6996 | SIHClient.exe | GET | 200 | 23.52.120.96:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl | unknown | — | — | whitelisted |
PID | Process | IP | Domain | ASN | CN | Reputation |
---|---|---|---|---|---|---|
1684 | svchost.exe | 40.127.240.158:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
4 | System | 192.168.100.255:137 | — | — | — | unknown |
— | — | 40.127.240.158:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
4712 | MoUsoCoreWorker.exe | 23.48.23.166:80 | crl.microsoft.com | Akamai International B.V. | DE | unknown |
4712 | MoUsoCoreWorker.exe | 23.52.120.96:80 | www.microsoft.com | AKAMAI-AS | DE | whitelisted |
5064 | SearchApp.exe | 2.16.110.121:443 | www.bing.com | Akamai International B.V. | DE | unknown |
4 | System | 192.168.100.255:138 | — | — | — | unknown |
— | — | 192.229.221.95:80 | ocsp.digicert.com | EDGECAST | US | unknown |
1176 | svchost.exe | 20.190.159.0:443 | login.live.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | unknown |
1176 | svchost.exe | 192.229.221.95:80 | ocsp.digicert.com | EDGECAST | US | unknown |
Domain | IP | Reputation |
---|---|---|
settings-win.data.microsoft.com |
| unknown |
crl.microsoft.com |
| unknown |
www.microsoft.com |
| unknown |
google.com |
| unknown |
www.bing.com |
| unknown |
ocsp.digicert.com |
| unknown |
login.live.com |
| unknown |
go.microsoft.com |
| unknown |
slscr.update.microsoft.com |
| unknown |
fe3cr.delivery.mp.microsoft.com |
| unknown |
PID | Process | Class | Message |
---|---|---|---|
— | — | A Network Trojan was detected | LOADER [ANY.RUN] PureLogs Download Attempt (LOAD) |