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Windows
Analysis Report
SIEM_PO00938467648.vbs
Overview
General Information
| Sample Name: | SIEM_PO00938467648.vbs |
| Analysis ID: | 756154 |
| MD5: | 633811bccf3fe62978ce41a04b653083 |
| SHA1: | bc81307b5c229094617e7cb8cdcaec55eaddad36 |
| SHA256: | b5e4225737f935940fa23989440d5ea2c123c8affde25d6d7224e2b4abab5608 |
| Infos: |   |
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Detection
AgentTesla, GuLoader
| Score: | 100 |
| Range: | 0 - 100 |
| Whitelisted: | false |
| Confidence: | 100% |
Signatures
Multi AV Scanner detection for submitted file
Malicious sample detected (through community Yara rule)
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
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)
Potential malicious VBS script found (suspicious strings)
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
Potential evasive VBS script found (use of timer() function in loop)
Obfuscated command line found
Machine Learning detection for dropped file
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)
Java / VBScript file with very long strings (likely obfuscated code)
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
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
AV Detection |
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ReversingLabs: |
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Joe Sandbox ML: |
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File opened: |
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HTTPS traffic detected: |
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Networking |
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DNS query: |
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JA3 fingerprint: |
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DNS traffic detected: |
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Code function: |
12_2_1D63A09A | |
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HTTP traffic detected: |
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HTTP traffic detected: |
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HTTPS traffic detected: |
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System Summary |
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