Model 1 Sending request to SiriusLLM... Total tokens: 1712 (1001 request / 711 response) File path: C:\Users\User\Desktop\b501e17e249221d34a618e288e0e9a75933cea9894ec11fdcd45c0663d95eeb6\b501e17e249221d34a618e288e0e9a75933cea9894ec11fdcd45c0663d95eeb6.vbs File hash: b501e17e249221d34a618e288e0e9a75933cea9894ec11fdcd45c0663d95eeb6 File size: 0.00 MB ## Analysis Summary The provided .vbs script exhibits several indicators of malicious intent, including self-replication, user deception, and potentially harmful system interactions. The script copies itself to the startup folder, displays misleading message boxes to the user, and attempts to execute files in system directories. It also queries running processes and executes a command using PowerShell. ## Detailed Analysis 1. **Self-replication and Persistence**: The script copies itself to the startup folder (`startupPath = objShell.SpecialFolders("Startup") & "\sloof_lirpa.vbs"`), ensuring it runs every time the user logs in. This is a common technique used by malware to maintain persistence on the system. 2. **User Deception**: The script displays two message boxes (`warning1` and `warning2`) with enticing and alarming messages, asking the user to press "YES" to supposedly obtain a free software ("Solaris.exe from Nikitpad"). If the user presses "NO", the script terminates. This social engineering tactic is often used by malware to trick users into performing certain actions. 3. **File Execution**: The script loops through an array of folder paths (`folderPaths`), and for each existing folder, it attempts to execute every file within that folder using `objShell.Run "cmd /c start "" " & Chr(34) & objFile.Path & Chr(34),0, False`. This could potentially lead to the execution of arbitrary files, depending on what files are present in those directories. 4. **System Interaction**: The script checks if certain system folders exist and executes files within them. It also checks for the presence of "wscript.exe" using WMI (`objWMIService.ExecQuery("Select * from Win32_Process Where Name = 'wscript.exe'"`) and, if it's the only instance, runs "powershell wininit.exe" using `objShell.Run`. This could be an attempt to execute malicious code or evade detection. 5. **Obfuscation and Encoding**: While the script is not heavily obfuscated, the use of misleading messages and the execution of commands via `cmd` and `powershell` could be seen as attempts to obscure the script's true intentions. 6. **Lack of Digital Signature**: The script is not digitally signed, which is unusual for legitimate scripts intended for distribution. ## Malicious Indicators Summary - Self-replication and persistence mechanism - Social engineering tactics to deceive the user - Potential for executing arbitrary files - Interaction with system processes and folders - Use of PowerShell for potentially malicious execution ## Confidence Level Given the evidence of self-replication, user deception, and potentially harmful system interactions, the confidence level in classifying this script as malicious is high. Final verdict: Malicious with 95% confidence. Model 2 Sending request to SiriusLLM... Total tokens: 2192 (1001 request / 1191 response) File path: C:\Users\User\Desktop\b501e17e249221d34a618e288e0e9a75933cea9894ec11fdcd45c0663d95eeb6\b501e17e249221d34a618e288e0e9a75933cea9894ec11fdcd45c0663d95eeb6.vbs File hash: b501e17e249221d34a618e288e0e9a75933cea9894ec11fdcd45c0663d95eeb6 File size: 0.00 MB Okay, let's start analyzing this VBScript. First, the script creates a FileSystemObject and a Shell object, which are common in VBScripts. Then it defines an array of folder paths, which are all system directories like System32 and SysWOW64. The script copies itself to the Startup folder, which is a classic persistence mechanism. That's a red flag right there because it ensures the script runs every time the user starts their computer. Next, there are two MsgBox prompts with warnings about "free Solaris.exe" from "Nikitpad." These messages are designed to trick the user into clicking Yes. If the user clicks No, the script quits. This social engineering tactic is often used in malware to get user interaction, which can lead to further malicious actions. Then, the script loops through each folder in the array. For each file in these system directories, it uses objShell.Run to execute the file with cmd. This is a big problem because it's launching every executable in those folders, which could include legitimate system files but in a way that's unexpected and potentially harmful. The use of start "" with the file path might be an attempt to run them without a window, but the main issue is the indiscriminate execution of all files in critical system directories. This could lead to system instability or exploitation of vulnerabilities in those files. The script also checks the number of wscript.exe processes. If there's exactly one, it runs powershell wininit.exe. Wininit.exe is a legitimate Windows process, but launching it via PowerShell in this context is suspicious. It might be trying to restart the system or execute some code under the guise of a system process. The condition checking for exactly one instance of wscript.exe could be an attempt to avoid detection or to ensure it's the only instance running. The lack of a digital signature is another red flag. While not all unsigned scripts are malicious, it's a common characteristic of malware to avoid signing. The script's behavior—persistence, social engineering, executing system files, and using PowerShell—strongly indicates malicious intent. The obfuscation isn't present here, but the actions are clearly harmful. The user interaction is a key part of the attack vector, making it more likely that the script is designed to exploit user trust or curiosity. Putting it all together, the script's actions are highly suspicious and align with typical malware behaviors. The confidence level is high because the combination of persistence, unauthorized execution, and social engineering points clearly to malicious intent. Analysis Summary The provided VBScript exhibits multiple malicious behaviors, including persistence mechanisms, unauthorized execution of system files, and social engineering tactics. The script copies itself to the Startup folder, executes all files in critical system directories, and uses PowerShell to launch system processes. These actions are indicative of malware designed to compromise system integrity and user trust. Detailed Analysis 1. **Persistence Mechanism**: The script copies itself to the user's Startup folder (`startupPath = objShell.SpecialFolders("Startup") & "\sloof_lirpa.vbs"`), ensuring it executes on every system startup. This is a classic persistence technique used by malware to maintain access. 2. **Social Engineering**: Two `MsgBox` prompts ("Press YES for free Solaris.exe from Nikitpad!!" and "Do it again for free Solaris lmfao!! :3") are designed to manipulate users into proceeding. This tactic exploits user curiosity or trust, often leading to unintended system compromise. 3. **Uncontrolled Execution of System Files**: The script iterates through system directories (`C:\Windows\System32`, `C:\Windows\SysWOW64`, etc.) and executes every file using `objShell.Run("cmd /c start "" " & Chr(34) & objFile.Path & Chr(34), 0, False")`. This indiscriminate execution could trigger vulnerabilities in system binaries or malicious payloads hidden in legitimate files. 4. **Abuse of System Processes**: The script queries `Win32_Process` for `wscript.exe` instances and conditionally executes `powershell wininit.exe`. While `wininit.exe` is a legitimate Windows process, its invocation via PowerShell in this context is suspicious and could be used to escalate privileges or bypass security mechanisms. 5. **Lack of Digital Signature**: The absence of a digital signature for a script performing these actions raises further suspicion, as legitimate software typically includes signing for trust verification. Final verdict: Malicious with 98% confidence.