Analysis
- max time kernel
149s - max time network
142s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
- submitted
04/11/2026, 18:40
General
- Target Comprobante de transferencia.JS.js
- Size 2.5MB
- Sample261104-xa9fpsed85
- SHA256 9e26dc9598297a6b7d5a8e21d3fd2c2a46d20c89d5991ee0e21838f2148fa0ab
Malware Config
Extracted
-
masslogger
-
exfiltration_mode
#SMTPEnabled
-
expire_time_date
00-00-0000
-
host_password
VamosNeptum2022$$
-
host_port
587
- host_receiver
- host_sender
-
host_server
mail.neptunfisheries.com
-
ssl_slate
False
Signatures
- Family: MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
- Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 2 IoCs
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 6 IoCs
- Adds Run key to start application 2 TTPs 2 IoCs
- Looks up external IP address via web service 1 TTPs 4 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Executes a VBScript file via the Windows Script Host. 1 TTPs 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 TTPs 4 IoCs
- Command and Scripting Interpreter: JavaScript 1 TTPs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 1 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
- Reads the TCP/IP host and domain name from the registry 1 TTPs 4 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- NTFS ADS 1 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Windows\system32\wscript.exewscript.exe "C:\Users\Admin\AppData\Local\Temp\Comprobante de transferencia.JS.js"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c echo. > "C:\Users\Admin\AppData\Local\Temp\Comprobante de transferencia.JS.js:Zone.Identifier"2⤵
- Executes a command shell one-liner
- NTFS ADS
-
-
C:\Users\Admin\Documents\NONIDROAXLFXAAHW.exe"C:\Users\Admin\Documents\NONIDROAXLFXAAHW.exe" C:\Users\Admin\Documents\WHAAXFLXAORDINON2⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
-
C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\Documents\WHAAXFLXAORDINON.vbs"1⤵
- Checks computer location settings
- Executes a VBScript file via the Windows Script Host.
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\Documents\NONIDROAXLFXAAHW.exe"C:\Users\Admin\Documents\NONIDROAXLFXAAHW.exe" "C:\Users\Admin\Documents\WHAAXFLXAORDINON"2⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
3JavaScript
1Visual Basic
1Windows Command Shell
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
2Credentials In Files
2Replay Monitor
Loading Replay Monitor...
Downloads
NONIDROAXLFXAAHW.exe
NONIDROAXLFXAAHW.mui
WHAAXFLXAORDINON
WHAAXFLXAORDINON.vbs
memory/2552-11-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-12-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-13-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-16-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-17-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-23-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-22-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-21-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-20-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-19-0x00000000007E0000-0x00000000007E1000-memory.dmp
memory/2552-18-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-27-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-26-0x0000000000850000-0x0000000000851000-memory.dmp
memory/2552-25-0x0000000000840000-0x0000000000841000-memory.dmp
memory/2552-24-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-29-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-65-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-76-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-75-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-74-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-183-0x0000000029AE0000-0x0000000029AF0000-memory.dmp
memory/2552-186-0x0000000029AE0000-0x0000000029AF0000-memory.dmp
memory/2552-185-0x0000000029AE0000-0x0000000029AF0000-memory.dmp
memory/2552-184-0x0000000029A50000-0x0000000029A6E000-memory.dmp
memory/2552-73-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-72-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-71-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-70-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-69-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-68-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-67-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-66-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-64-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-63-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-62-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-61-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-60-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-59-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-58-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-57-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-56-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-55-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-54-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-53-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-52-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-51-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-50-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-49-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-48-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-47-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-46-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-45-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-44-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-43-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-33-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-28-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-42-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-41-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-40-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-39-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-38-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-37-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-36-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-35-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-34-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-32-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-31-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-30-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/2552-187-0x0000000029AF0000-0x000000002A094000-memory.dmp
memory/2552-188-0x000000002A0B0000-0x000000002A14C000-memory.dmp
memory/2552-189-0x0000000029AE0000-0x0000000029AF0000-memory.dmp
memory/2552-369-0x0000000029AE0000-0x0000000029AF0000-memory.dmp
memory/2552-371-0x0000000029AE0000-0x0000000029AF0000-memory.dmp
memory/2552-372-0x0000000029AE0000-0x0000000029AF0000-memory.dmp
memory/3456-368-0x000000002ABA0000-0x000000002ABF0000-memory.dmp
memory/3456-374-0x000000002AD40000-0x000000002AF02000-memory.dmp
memory/3456-375-0x000000002AF10000-0x000000002AFA2000-memory.dmp
memory/3456-376-0x000000002B140000-0x000000002B14A000-memory.dmp