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Windows Analysis Report
file.exe

Overview

General Information

Sample Name:file.exe
Analysis ID:623387
MD5:2beb53482de8f6a713deb6fa9f9e7267
SHA1:0959ea9b1697d980da699f8375f91ca1df8e0f56
SHA256:7ac7845621113c87e927eb2b582af6f1809e4866e4ee0f089dd1c6ab0042dd27
Infos:

Detection

AgentTesla, GuLoader
Score:100
Range:0 - 100
Whitelisted:false
Confidence:100%

Signatures

Yara detected AgentTesla
Antivirus detection for URL or domain
Yara detected GuLoader
Found malware configuration
Multi AV Scanner detection for submitted file
Yara detected Telegram RAT
Multi AV Scanner detection for domain / URL
Tries to steal Mail credentials (via file / registry access)
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses the Telegram API (likely for C&C communication)
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)
Hides threads from debuggers
Installs a global keyboard hook
Writes to foreign memory regions
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to harvest and steal ftp login credentials
C2 URLs / IPs found in malware configuration
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
May sleep (evasive loops) to hinder dynamic analysis
Uses code obfuscation techniques (call, push, ret)
Detected potential crypto function
Sample execution stops while process was sleeping (likely an evasion)
JA3 SSL client fingerprint seen in connection with other malware
Contains functionality to dynamically determine API calls
HTTP GET or POST without a user agent
Contains long sleeps (>= 3 min)
Abnormal high CPU Usage
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
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
Checks if the current process is being debugged
Creates a process in suspended mode (likely to inject code)
Contains functionality for read data from the clipboard
Uses 32bit PE files
Queries the volume information (name, serial number etc) of a device
Contains functionality to shutdown / reboot the system
Internet Provider seen in connection with other malware
Found potential string decryption / allocating functions
Yara detected Credential Stealer
Contains functionality to call native functions
Found dropped PE file which has not been started or loaded
IP address seen in connection with other malware
Contains functionality for execution timing, often used to detect debuggers
Enables debug privileges
Sample file is different than original file name gathered from version info
Creates a window with clipboard capturing capabilities
PE / OLE file has an invalid certificate
Contains functionality to enumerate device drivers
Queries sensitive processor information (via WMI, Win32_Processor, often done to detect virtual machines)
Uses Microsoft's Enhanced Cryptographic Provider
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)

Classification

  • System is w10x64native
  • file.exe (PID: 2916 cmdline: "C:\Users\user\Desktop\file.exe" MD5: 2BEB53482DE8F6A713DEB6FA9F9E7267)
    • CasPol.exe (PID: 7544 cmdline: "C:\Users\user\Desktop\file.exe" MD5: 914F728C04D3EDDD5FBA59420E74E56B)
    • CasPol.exe (PID: 7828 cmdline: "C:\Users\user\Desktop\file.exe" MD5: 914F728C04D3EDDD5FBA59420E74E56B)
    • CasPol.exe (PID: 5720 cmdline: "C:\Users\user\Desktop\file.exe" MD5: 914F728C04D3EDDD5FBA59420E74E56B)
    • CasPol.exe (PID: 8436 cmdline: "C:\Users\user\Desktop\file.exe" MD5: 914F728C04D3EDDD5FBA59420E74E56B)