Analysis
- max time kernel
148s - max time network
129s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
22/08/2026, 11:12
General
- Target TRANSFERENCIA.js
- Size 3.1MB
- Sample260822-na2lestdla
- SHA256 f794036bb19b2c3880020071c559a1ae4879a7f8c6bf251b12ad6e662ee5c6f1
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.bpl.com.mx
-
Port
587
-
Username
-
Password
Bprod22#
Extracted
-
masslogger
-
exfiltration_mode
#SMTPEnabled
-
expire_time_date
00-00-0000
-
host_password
Bprod22#
-
host_port
587
- host_receiver
- host_sender
-
host_server
mail.bpl.com.mx
-
ssl_slate
False
Signatures
- Family: MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
- Badlisted process makes network request 8 IoCs
Network request originating from process or tool commonly abused by malware.
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell and hide display window.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Looks up external IP address via web service 1 TTPs 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Command and Scripting Interpreter: JavaScript 1 TTPs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: EnumeratesProcesses 3 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\TRANSFERENCIA.js1⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\conhost.exe"C:\Windows\System32\conhost.exe" --headless "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -WindowStyle Hidden -NoP -EP Bypass -NonInteractive -File "C:\Users\Admin\AppData\Local\Temp\17rbmt4a45a4\17rbmt4a45a4.ps1"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exeC:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -WindowStyle Hidden -NoP -EP Bypass -NonInteractive -File C:\Users\Admin\AppData\Local\Temp\17rbmt4a45a4\17rbmt4a45a4.ps13⤵
- Badlisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
-
-
C:\Windows\system32\wscript.exewscript.exe1⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
17rbmt4a45a4.ps1
17rbmt4a45a4a
17rbmt4a45a4b
memory/5716-15-0x00007FFB48410000-0x00007FFB48DB4000-memory.dmp
memory/5716-17-0x00000236A5950000-0x00000236A59A6000-memory.dmp
memory/5716-7-0x00000236A5510000-0x00000236A5532000-memory.dmp
memory/5716-8-0x00007FFB48410000-0x00007FFB48DB4000-memory.dmp
memory/5716-4-0x00007FFB48410000-0x00007FFB48DB4000-memory.dmp
memory/5716-13-0x00007FFB48410000-0x00007FFB48DB4000-memory.dmp
memory/5716-14-0x00007FFB48410000-0x00007FFB48DB4000-memory.dmp
memory/5716-3-0x00007FFB4859F000-0x00007FFB485A0000-memory.dmp
memory/5716-16-0x00000236A57A0000-0x00000236A5946000-memory.dmp
memory/5716-9-0x00007FFB48410000-0x00007FFB48DB4000-memory.dmp
memory/5716-18-0x00000236A59B0000-0x00000236A59CE000-memory.dmp
memory/5716-19-0x00007FFB48410000-0x00007FFB48DB4000-memory.dmp
memory/5716-20-0x00007FFB48410000-0x00007FFB48DB4000-memory.dmp
memory/5716-21-0x00007FFB48410000-0x00007FFB48DB4000-memory.dmp
memory/5716-22-0x00007FFB48410000-0x00007FFB48DB4000-memory.dmp
memory/5716-24-0x00007FFB48410000-0x00007FFB48DB4000-memory.dmp
memory/5716-25-0x00000236A5B70000-0x00000236A5BC0000-memory.dmp
memory/5716-26-0x00000236A5D90000-0x00000236A5F52000-memory.dmp