| File name: | Netflix mail access Checker 2024.exe |
| Full analysis: | https://app.any.run/tasks/6245690f-ae87-4ead-b064-a6981d767a2d |
| Verdict: | Malicious activity |
| Threats: | Lumma is an information stealer, developed using the C programming language. It is offered for sale as a malware-as-a-service, with several plans available. It usually targets cryptocurrency wallets, login credentials, and other sensitive information on a compromised system. The malicious software regularly gets updates that improve and expand its functionality, making it a serious stealer threat. |
| Analysis date: | August 20, 2024, 18:32:33 |
| OS: | Windows 10 Professional (build: 19045, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows |
| MD5: | 1F3B95E3DB5EAC6C60291820F7AB258A |
| SHA1: | 2BFDE7B1D9BB203199DED93EADDA15E9C9451747 |
| SHA256: | C9861725FE8937EDF1F735FB88FBCEE1E18FC1AE4B0B5F979084EF592B8C890B |
| SSDEEP: | 24576:VhQfxECFp91Z3JthrGGRxqDMt4e8zY85/lstUC8LCD9:V2fxECFp91Z3JthrGKxqDMt4e8M85/lU |
MALICIOUS
Create files in the Startup directory
- RegAsm.exe (PID: 6916)
Actions looks like stealing of personal data
- RegAsm.exe (PID: 6908)
Connects to the CnC server
- svchost.exe (PID: 2256)
LUMMA has been detected (SURICATA)
- svchost.exe (PID: 2256)
- RegAsm.exe (PID: 6908)
SUSPICIOUS
Starts a Microsoft application from unusual location
- Netflix mail access Checker 2024.exe (PID: 6712)
Process drops legitimate windows executable
- RegAsm.exe (PID: 6800)
- Netflix mail access Checker 2024.exe (PID: 6712)
- RegAsm.exe (PID: 6916)
Reads security settings of Internet Explorer
- RegAsm.exe (PID: 6800)
Drops the executable file immediately after the start
- RegAsm.exe (PID: 6800)
- Netflix mail access Checker 2024.exe (PID: 6712)
- RegAsm.exe (PID: 6916)
Executable content was dropped or overwritten
- RegAsm.exe (PID: 6800)
- RegAsm.exe (PID: 6916)
Reads the date of Windows installation
- RegAsm.exe (PID: 6800)
The process creates files with name similar to system file names
- RegAsm.exe (PID: 6916)
Contacting a server suspected of hosting an CnC
- svchost.exe (PID: 2256)
- RegAsm.exe (PID: 6908)
Searches for installed software
- RegAsm.exe (PID: 6908)
Found regular expressions for crypto-addresses (YARA)
- RegAsm.exe (PID: 6916)
INFO
Reads the computer name
- Netflix mail access Checker 2024.exe (PID: 6712)
- RegAsm.exe (PID: 6800)
- RAreatCU4h.exe (PID: 6848)
- C26Efy1fnm.exe (PID: 6868)
- RegAsm.exe (PID: 6908)
- RegAsm.exe (PID: 6916)
Creates files or folders in the user directory
- RegAsm.exe (PID: 6800)
- RegAsm.exe (PID: 6916)
Checks supported languages
- RegAsm.exe (PID: 6800)
- RAreatCU4h.exe (PID: 6848)
- Netflix mail access Checker 2024.exe (PID: 6712)
- C26Efy1fnm.exe (PID: 6868)
- RegAsm.exe (PID: 6916)
- RegAsm.exe (PID: 6908)
Process checks computer location settings
- RegAsm.exe (PID: 6800)
Reads the software policy settings
- RegAsm.exe (PID: 6908)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .dll | | | Win32 Dynamic Link Library (generic) (43.5) |
|---|---|---|
| .exe | | | Win32 Executable (generic) (29.8) |
| .exe | | | Generic Win/DOS Executable (13.2) |
| .exe | | | DOS Executable Generic (13.2) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2024:08:20 17:39:38+00:00 |
| ImageFileCharacteristics: | Executable, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 11 |
| CodeSize: | 543232 |
| InitializedDataSize: | 2560 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x8685e |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 6 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 10.0.19041.3636 |
| ProductVersionNumber: | 10.0.19041.3636 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Windows NT 32-bit |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | English (U.S.) |
| CharacterSet: | Unicode |
| CompanyName: | Microsoft Corporation |
| FileDescription: | Auto File System Format Utility |
| FileVersion: | 10.0.19041.3636 (WinBuild.160101.0800) |
| InternalName: | autofmt |
| LegalCopyright: | © Microsoft Corporation. All rights reserved. |
| OriginalFileName: | AUTOFMT.EXE |
| ProductName: | Microsoft® Windows® Operating System |
| ProductVersion: | 10.0.19041.3636 |
Total processes
139
Monitored processes
7
Malicious processes
7
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2256 | C:\WINDOWS\system32\svchost.exe -k NetworkService -p -s Dnscache | C:\Windows\System32\svchost.exe | services.exe | ||||||||||||
User: NETWORK SERVICE Company: Microsoft Corporation Integrity Level: SYSTEM Description: Host Process for Windows Services Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 6712 | "C:\Users\admin\AppData\Local\Temp\Netflix mail access Checker 2024.exe" | C:\Users\admin\AppData\Local\Temp\Netflix mail access Checker 2024.exe | — | explorer.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Auto File System Format Utility Exit code: 0 Version: 10.0.19041.3636 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 6800 | "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe" | C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe | Netflix mail access Checker 2024.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft .NET Assembly Registration Utility Exit code: 0 Version: 4.8.9037.0 built by: NET481REL1 Modules
| |||||||||||||||
| 6848 | "C:\Users\admin\AppData\Roaming\RAreatCU4h.exe" | C:\Users\admin\AppData\Roaming\RAreatCU4h.exe | — | RegAsm.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Auto File System Format Utility Exit code: 0 Version: 10.0.19041.3636 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 6868 | "C:\Users\admin\AppData\Roaming\C26Efy1fnm.exe" | C:\Users\admin\AppData\Roaming\C26Efy1fnm.exe | — | RegAsm.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Auto File System Format Utility Exit code: 0 Version: 10.0.19041.3636 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 6908 | "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe" | C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe | RAreatCU4h.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft .NET Assembly Registration Utility Exit code: 0 Version: 4.8.9037.0 built by: NET481REL1 Modules
| |||||||||||||||
| 6916 | "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe" | C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe | C26Efy1fnm.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft .NET Assembly Registration Utility Version: 4.8.9037.0 built by: NET481REL1 Modules
| |||||||||||||||
Total events
4 460
Read events
4 452
Write events
8
Delete events
0
Modification events
| (PID) Process: | (6800) RegAsm.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | ProxyBypass |
Value: 1 | |||
| (PID) Process: | (6800) RegAsm.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | IntranetName |
Value: 1 | |||
| (PID) Process: | (6800) RegAsm.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 1 | |||
| (PID) Process: | (6800) RegAsm.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 0 | |||
Executable files
3
Suspicious files
0
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 6800 | RegAsm.exe | C:\Users\admin\AppData\Roaming\C26Efy1fnm.exe | executable | |
MD5:804A74EC9E211DC6D5374D8FA2835292 | SHA256:65AC4DB8E69FB8E5FF882524B9ABB4002AEDFCE7F7236B33CBDAACFFAE1A6C87 | |||
| 6916 | RegAsm.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svhost.exe | executable | |
MD5:0AEA1B49AEDB6C7BF4805DD5054DC0F7 | SHA256:BD02B877C14DDC1E2DB118F32730B73B2E5AE792A84AC48F28957BEAFF2B83F9 | |||
| 6800 | RegAsm.exe | C:\Users\admin\AppData\Roaming\RAreatCU4h.exe | executable | |
MD5:52797862CB538F5D33D1FBDDBA126055 | SHA256:F6421443F881D3FA16746ACE08AC6C34A5D4B640231AF205C5A118A09B3EB645 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
3
TCP/UDP connections
34
DNS requests
16
Threats
7
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
1920 | backgroundTaskHost.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAn5bsKVVV8kdJ6vHl3O1J0%3D | unknown | — | — | whitelisted |
2204 | SIHClient.exe | GET | 200 | 88.221.169.152:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl | unknown | — | — | whitelisted |
3144 | svchost.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | 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 |
|---|---|---|---|---|---|---|
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
5144 | svchost.exe | 40.127.240.158:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | unknown |
4760 | RUXIMICS.exe | 40.127.240.158:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | unknown |
2120 | MoUsoCoreWorker.exe | 40.127.240.158:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | unknown |
6908 | RegAsm.exe | 188.114.96.3:443 | deicedosmzj.shop | CLOUDFLARENET | NL | unknown |
3260 | svchost.exe | 40.113.103.199:443 | client.wns.windows.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
3144 | svchost.exe | 40.126.32.136:443 | login.live.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | unknown |
3144 | svchost.exe | 192.229.221.95:80 | ocsp.digicert.com | EDGECAST | US | whitelisted |
2120 | MoUsoCoreWorker.exe | 52.140.118.28:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IN | unknown |
1920 | backgroundTaskHost.exe | 20.223.35.26:443 | arc.msn.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | unknown |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
deicedosmzj.shop |
| malicious |
client.wns.windows.com |
| whitelisted |
login.live.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
arc.msn.com |
| whitelisted |
slscr.update.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
fe3cr.delivery.mp.microsoft.com |
| whitelisted |
Threats
PID | Process | Class | Message |
|---|---|---|---|
6908 | RegAsm.exe | Domain Observed Used for C2 Detected | ET MALWARE Observed Lumma Stealer Related Domain (deicedosmzj .shop in TLS SNI) |
2256 | svchost.exe | Domain Observed Used for C2 Detected | ET MALWARE Lumma Stealer Related CnC Domain in DNS Lookup (deicedosmzj .shop) |
6908 | RegAsm.exe | Domain Observed Used for C2 Detected | ET MALWARE Observed Lumma Stealer Related Domain (deicedosmzj .shop in TLS SNI) |
6908 | RegAsm.exe | Domain Observed Used for C2 Detected | ET MALWARE Observed Lumma Stealer Related Domain (deicedosmzj .shop in TLS SNI) |
6908 | RegAsm.exe | Domain Observed Used for C2 Detected | ET MALWARE Observed Lumma Stealer Related Domain (deicedosmzj .shop in TLS SNI) |
6908 | RegAsm.exe | Domain Observed Used for C2 Detected | ET MALWARE Observed Lumma Stealer Related Domain (deicedosmzj .shop in TLS SNI) |
6908 | RegAsm.exe | Domain Observed Used for C2 Detected | ET MALWARE Observed Lumma Stealer Related Domain (deicedosmzj .shop in TLS SNI) |