Analysis
- user interaction
yes - max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
- submitted
22/09/2026, 14:36
General
- Target COTIZACIÓN.js
- Size 3.9MB
- Sample260922-rylfwsvxcs
- SHA256 8c2a616961c1ac3c67441c5eef688e536999aacb0161009a584c74f36bc6bcc7
Malware Config
Extracted
-
masslogger
-
exfiltration_mode
#SMTPEnabled
-
expire_time_date
00-00-0000
-
host_password
h5?hTg004_131
-
host_port
587
- host_receiver
- host_sender
-
host_server
mail.ciccarelli.com.ar
-
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 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 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 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.
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 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 3 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
- System Location Discovery: System Language Discovery 1 TTPs 7 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 1 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 7 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\COTIZACIÓN.js1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\Documents\QFCZXHSLAVZVGXJW.exe"C:\Users\Admin\Documents\QFCZXHSLAVZVGXJW.exe" C:\Users\Admin\Documents\QFCZXHSLAVZVGXJW.ttf2⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
-
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c whoami3⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\whoami.exewhoami4⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
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-
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c schtasks /query /tn "QFCZXHSLAVZVGXJW" 2>nul3⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exeschtasks /query /tn "QFCZXHSLAVZVGXJW"4⤵
- System Location Discovery: System Language Discovery
-
-
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c schtasks /create /sc minute /mo 15 /tn "QFCZXHSLAVZVGXJW" /tr "cmd /c \"C:\Users\Admin\Documents\WJXGVZVALSHXZCFQ.url\"" /ru "vhvqvsii\admin" /f /it3⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exeschtasks /create /sc minute /mo 15 /tn "QFCZXHSLAVZVGXJW" /tr "cmd /c \"C:\Users\Admin\Documents\WJXGVZVALSHXZCFQ.url\"" /ru "vhvqvsii\admin" /f /it4⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
-
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C:\Windows\system32\cmd.execmd1⤵
Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2JavaScript
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
2Credentials In Files
2Replay Monitor
Loading Replay Monitor...
Downloads
QFCZXHSLAVZVGXJW.exe
QFCZXHSLAVZVGXJW.mui
QFCZXHSLAVZVGXJW.ttf
memory/456-24-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-23-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-22-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-21-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-20-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-19-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-18-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-17-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-16-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-15-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-14-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-13-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-12-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-27-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-26-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-25-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-28-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-75-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-74-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-73-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-72-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-71-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-70-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-69-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-68-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-67-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-66-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-65-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-64-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-63-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-62-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-61-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-60-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-59-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-58-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-57-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-56-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-55-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-54-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-53-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-52-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-51-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-50-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-49-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-48-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-47-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-46-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-45-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-44-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-42-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-41-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-40-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-39-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-38-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-37-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-35-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-34-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-33-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-32-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-31-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-30-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-43-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-36-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-29-0x000000007FE40000-0x000000007FE50000-memory.dmp
memory/456-2912-0x00000000039D0000-0x00000000039EE000-memory.dmp
memory/456-2913-0x0000000029F30000-0x000000002A4D4000-memory.dmp
memory/456-2914-0x00000000276D0000-0x000000002776C000-memory.dmp
memory/456-2916-0x000000002B020000-0x000000002B070000-memory.dmp
memory/456-2918-0x000000002B2C0000-0x000000002B482000-memory.dmp
memory/456-2920-0x000000002B490000-0x000000002B522000-memory.dmp
memory/456-2921-0x000000002B5D0000-0x000000002B5DA000-memory.dmp