Loading Joe Sandbox Report ...

Edit tour

Windows Analysis Report


General Information

Sample Name:xcVh7ZmH4Y.exe
Analysis ID:623886


AgentTesla, GuLoader
Range:0 - 100


Found malware configuration
Multi AV Scanner detection for submitted file
Malicious sample detected (through community Yara rule)
Yara detected AgentTesla
Antivirus / Scanner detection for submitted sample
Yara detected GuLoader
Snort IDS alert for network traffic
Hides threads from debuggers
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to detect Any.run
Tries to harvest and steal ftp login credentials
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
C2 URLs / IPs found in malware configuration
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Tries to harvest and steal browser information (history, passwords, etc)
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Uses 32bit PE files
Queries the volume information (name, serial number etc) of a device
Yara signature match
May sleep (evasive loops) to hinder dynamic analysis
Contains functionality to shutdown / reboot the system
Uses code obfuscation techniques (call, push, ret)
Internet Provider seen in connection with other malware
Detected potential crypto function
Sample execution stops while process was sleeping (likely an evasion)
Yara detected Credential Stealer
JA3 SSL client fingerprint seen in connection with other malware
Contains functionality to call native functions
Contains functionality to dynamically determine API calls
Found dropped PE file which has not been started or loaded
Contains functionality for execution timing, often used to detect debuggers
Contains functionality to detect virtual machines (SIDT)
Contains long sleeps (>= 3 min)
Enables debug privileges
Contains functionality to detect virtual machines (SMSW)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Sample file is different than original file name gathered from version info
PE file contains strange resources
Drops PE files
Tries to load missing DLLs
Contains functionality to read the PEB
Uses a known web browser user agent for HTTP communication
Detected TCP or UDP traffic on non-standard ports
Checks if the current process is being debugged
Uses SMTP (mail sending)
Queries sensitive processor information (via WMI, Win32_Processor, often done to detect virtual machines)
Uses Microsoft's Enhanced Cryptographic Provider
Creates a process in suspended mode (likely to inject code)
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality to detect virtual machines (SGDT)
Contains functionality for read data from the clipboard


  • System is w10x64native
  • xcVh7ZmH4Y.exe (PID: 2648 cmdline: "C:\Users\user\Desktop\xcVh7ZmH4Y.exe" MD5: D17D180329065DF1BF54501A2C8E138B)
    • CasPol.exe (PID: 5768 cmdline: "C:\Users\user\Desktop\xcVh7ZmH4Y.exe" MD5: 914F728C04D3EDDD5FBA59420E74E56B)
    • CasPol.exe (PID: 2016 cmdline: "C:\Users\user\Desktop\xcVh7ZmH4Y.exe" MD5: 914F728C04D3EDDD5FBA59420E74E56B)
      • conhost.exe (PID: 428 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: 81CA40085FC75BABD2C91D18AA9FFA68)
  • cleanup
{"Exfil Mode": "SMTP", "SMTP Info": "administracion@comansi.comJUGuete$2021mail.comansi.comfedericornanetti1990@gmail.com"}
{"Payload URL": "https://drive.google.com/uc?export=download&id=1VssbX_L5DESUoNwRHcbF42fii8wzHqEA"}
00000004.00000000.26061242461.0000000001100000.00000040.00000400.00020000.00000000.sdmpJoeSecurity_GuLoader_2Yara detected GuLoaderJoe Security
    00000001.00000002.26210459102.0000000002F40000.00000040.00000001.00040000.00000008.sdmpJoeSecurity_GuLoader_2Yara detected GuLoaderJoe Security
      00000004.00000002.30951277125.000000001D8E1000.00000004.00000800.00020000.00000000.sdmpJoeSecurity_AgentTesla_1Yara detected AgentTeslaJoe Security
        00000004.00000002.30951277125.000000001D8E1000.00000004.00000800.00020000.00000000.sdmpJoeSecurity_CredentialStealerYara detected Credential StealerJoe Security