| File name: | 037c825de0105c556885ea655349e8470b6fbeab00612b3952f9c4c37ad37588 |
| Full analysis: | https://app.any.run/tasks/3065350c-d13e-4b14-a0e1-0f1db98be197 |
| 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: | November 17, 2024, 08:46:59 |
| 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: | 12045633292C69D63C710B4A00A6BE72 |
| SHA1: | 15E15462C382468C7CAA231A3D6F3F64CCE2777B |
| SHA256: | 037C825DE0105C556885EA655349E8470B6FBEAB00612B3952F9C4C37AD37588 |
| SSDEEP: | 1536:n7evce2rJ3psU5fcCpT0IvplJ+odxYrzsQ4iagz6KoRRRKwKsWeSu+/dD464hlCz:7evcvgRRgJRRRKD464hlC1XG06E002+ |
| .exe | | | Generic CIL Executable (.NET, Mono, etc.) (63.1) |
|---|---|---|
| .exe | | | Win64 Executable (generic) (23.8) |
| .dll | | | Win32 Dynamic Link Library (generic) (5.6) |
| .exe | | | Win32 Executable (generic) (3.8) |
| .exe | | | Generic Win/DOS Executable (1.7) |
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2024:11:07 08:23:02+00:00 |
| ImageFileCharacteristics: | Executable, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 8 |
| CodeSize: | 73216 |
| InitializedDataSize: | 12288 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x13bfe |
| 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: | pagamento.UniCredit.Bank.pdf |
| FileVersion: | 1.0.0.0 |
| InternalName: | pagamento.UniCredit.Bank.pdf.exe |
| LegalCopyright: | Copyright © 2018 |
| LegalTrademarks: | - |
| OriginalFileName: | pagamento.UniCredit.Bank.pdf.exe |
| ProductName: | pagamento.UniCredit.Bank.pdf |
| ProductVersion: | 1.0.0.0 |
| AssemblyVersion: | 1.0.0.0 |
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1732 | "C:\Users\admin\Desktop\037c825de0105c556885ea655349e8470b6fbeab00612b3952f9c4c37ad37588.exe" | C:\Users\admin\Desktop\037c825de0105c556885ea655349e8470b6fbeab00612b3952f9c4c37ad37588.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Description: pagamento.UniCredit.Bank.pdf Exit code: 4294967295 Version: 1.0.0.0 Modules
| |||||||||||||||
| 5564 | "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
Remcos(PID) Process(5564) InstallUtil.exe C2 (1)212.162.149.42:7118 BotnetRemoteHost Options Connect_interval1 Install_flagFalse Install_HKCU\RunTrue Install_HKLM\RunTrue Install_HKLM\Explorer\Run1 Setup_path%LOCALAPPDATA% Copy_fileremcos.exe Startup_valueRemcos Hide_fileFalse Mutex_nameRmc-YP127Q Keylog_flag0 Keylog_path%LOCALAPPDATA% Keylog_filelogs.dat Keylog_cryptFalse Hide_keylogFalse Screenshot_flagFalse Screenshot_time5 Take_ScreenshotFalse Screenshot_path%APPDATA% Screenshot_fileScreenshots Screenshot_cryptFalse Mouse_optionFalse Delete_fileFalse Audio_record_time5 Audio_path%ProgramFiles% Audio_dirMicRecords Connect_delay0 Copy_dirRemcos Keylog_dirremcos Max_keylog_file100000 | |||||||||||||||
| (PID) Process: | (1732) 037c825de0105c556885ea655349e8470b6fbeab00612b3952f9c4c37ad37588.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\RASAPI32 |
| Operation: | write | Name: | EnableFileTracing |
Value: 0 | |||
| (PID) Process: | (1732) 037c825de0105c556885ea655349e8470b6fbeab00612b3952f9c4c37ad37588.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\RASAPI32 |
| Operation: | write | Name: | EnableAutoFileTracing |
Value: 0 | |||
| (PID) Process: | (1732) 037c825de0105c556885ea655349e8470b6fbeab00612b3952f9c4c37ad37588.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\RASAPI32 |
| Operation: | write | Name: | EnableConsoleTracing |
Value: 0 | |||
| (PID) Process: | (1732) 037c825de0105c556885ea655349e8470b6fbeab00612b3952f9c4c37ad37588.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\RASAPI32 |
| Operation: | write | Name: | FileTracingMask |
Value: | |||
| (PID) Process: | (1732) 037c825de0105c556885ea655349e8470b6fbeab00612b3952f9c4c37ad37588.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\RASAPI32 |
| Operation: | write | Name: | ConsoleTracingMask |
Value: | |||
| (PID) Process: | (1732) 037c825de0105c556885ea655349e8470b6fbeab00612b3952f9c4c37ad37588.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\RASAPI32 |
| Operation: | write | Name: | MaxFileSize |
Value: 1048576 | |||
| (PID) Process: | (1732) 037c825de0105c556885ea655349e8470b6fbeab00612b3952f9c4c37ad37588.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\RASAPI32 |
| Operation: | write | Name: | FileDirectory |
Value: %windir%\tracing | |||
| (PID) Process: | (1732) 037c825de0105c556885ea655349e8470b6fbeab00612b3952f9c4c37ad37588.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\RASMANCS |
| Operation: | write | Name: | EnableFileTracing |
Value: 0 | |||
| (PID) Process: | (1732) 037c825de0105c556885ea655349e8470b6fbeab00612b3952f9c4c37ad37588.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\RASMANCS |
| Operation: | write | Name: | EnableAutoFileTracing |
Value: 0 | |||
| (PID) Process: | (1732) 037c825de0105c556885ea655349e8470b6fbeab00612b3952f9c4c37ad37588.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\RASMANCS |
| Operation: | write | Name: | EnableConsoleTracing |
Value: 0 | |||
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 1732 | 037c825de0105c556885ea655349e8470b6fbeab00612b3952f9c4c37ad37588.exe | C:\Users\admin\AppData\Roaming\TypeId.exe | executable | |
MD5:12045633292C69D63C710B4A00A6BE72 | SHA256:037C825DE0105C556885EA655349E8470B6FBEAB00612B3952F9C4C37AD37588 | |||
| 1732 | 037c825de0105c556885ea655349e8470b6fbeab00612b3952f9c4c37ad37588.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\TypeId.vbs | text | |
MD5:9D608CD1F64AE38186AE154430E32471 | SHA256:6908DE6483DBD6A873DA9F4B4F4044FBFA3545A81CCDFA0B55EECE80BE8EE160 | |||
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
6944 | svchost.exe | GET | 200 | 23.48.23.156:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
1584 | RUXIMICS.exe | GET | 200 | 23.48.23.156:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
5488 | MoUsoCoreWorker.exe | GET | 200 | 23.48.23.156:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
6944 | svchost.exe | GET | 200 | 184.30.21.171:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
1584 | RUXIMICS.exe | GET | 200 | 184.30.21.171:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
5488 | MoUsoCoreWorker.exe | GET | 200 | 184.30.21.171:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
— | — | GET | 200 | 64.31.43.234:443 | https://inspirecollege.co.uk/trashss/Uanforw.pdf | unknown | binary | 1.12 Mb | — |
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
1584 | RUXIMICS.exe | 40.127.240.158:443 | — | MICROSOFT-CORP-MSN-AS-BLOCK | IE | unknown |
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
5488 | MoUsoCoreWorker.exe | 40.127.240.158:443 | — | MICROSOFT-CORP-MSN-AS-BLOCK | IE | unknown |
6944 | svchost.exe | 40.127.240.158:443 | — | MICROSOFT-CORP-MSN-AS-BLOCK | IE | unknown |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
1732 | 037c825de0105c556885ea655349e8470b6fbeab00612b3952f9c4c37ad37588.exe | 64.31.43.234:443 | inspirecollege.co.uk | LIMESTONENETWORKS | US | malicious |
6944 | svchost.exe | 23.48.23.156:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
1584 | RUXIMICS.exe | 23.48.23.156:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
5488 | MoUsoCoreWorker.exe | 23.48.23.156:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
6944 | svchost.exe | 184.30.21.171:80 | www.microsoft.com | AKAMAI-AS | DE | whitelisted |
Domain | IP | Reputation |
|---|---|---|
google.com |
| whitelisted |
inspirecollege.co.uk |
| unknown |
crl.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
settings-win.data.microsoft.com |
| whitelisted |
self.events.data.microsoft.com |
| whitelisted |
PID | Process | Class | Message |
|---|---|---|---|
5564 | InstallUtil.exe | A Network Trojan was detected | REMOTE [ANY.RUN] REMCOS TLS Connection JA3 Hash |
5564 | InstallUtil.exe | Malware Command and Control Activity Detected | ET JA3 Hash - Remcos 3.x/4.x TLS Connection |
5564 | InstallUtil.exe | A Network Trojan was detected | REMOTE [ANY.RUN] REMCOS TLS Connection JA3 Hash |
5564 | InstallUtil.exe | Malware Command and Control Activity Detected | ET JA3 Hash - Remcos 3.x/4.x TLS Connection |
5564 | InstallUtil.exe | A Network Trojan was detected | REMOTE [ANY.RUN] REMCOS TLS Connection JA3 Hash |
5564 | InstallUtil.exe | Malware Command and Control Activity Detected | ET JA3 Hash - Remcos 3.x/4.x TLS Connection |