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Windows Analysis Report
PO-08784 xlsx.vbe

Overview

General Information

Sample Name:PO-08784 xlsx.vbe
Analysis ID:755441
MD5:266115592f966240c14dfeeec624bdf5
SHA1:455a06b52d8e8f46d9a80067d3d1b1ea23036d65
SHA256:1df8d51920f7e386c6b86379363cc42dd86fe47a933e36cecd23c7b08d3118e2
Infos:

Detection

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

Signatures

Yara detected AgentTesla
Sigma detected: Dot net compiler compiles file from suspicious location
Antivirus detection for URL or domain
Multi AV Scanner detection for domain / URL
Yara detected GuLoader
Snort IDS alert for network traffic
Hides threads from debuggers
Tries to steal Mail credentials (via file / registry access)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to detect Any.run
Wscript starts Powershell (via cmd or directly)
Tries to harvest and steal ftp login credentials
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Very long command line found
May check the online IP address of the machine
Obfuscated command line found
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)
Queries the volume information (name, serial number etc) of a device
Yara signature match
Very long cmdline option found, this is very uncommon (may be encrypted or packed)
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)
Yara detected Credential Stealer
JA3 SSL client fingerprint seen in connection with other malware
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 long sleeps (>= 3 min)
Enables debug privileges
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Drops PE files
Tries to load missing DLLs
Uses a known web browser user agent for HTTP communication
Contains functionality to open a port and listen for incoming connection (possibly a backdoor)
Detected TCP or UDP traffic on non-standard ports
Checks if the current process is being debugged
Contains functionality to detect virtual machines (SLDT)
Uses FTP
Queries sensitive processor information (via WMI, Win32_Processor, often done to detect virtual machines)
Compiles C# or VB.Net code
Creates a process in suspended mode (likely to inject code)
Found WSH timer for Javascript or VBS script (likely evasive script)
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)

Classification