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Windows
Analysis Report
justificant de transfer#U00e8ncia.vbs
Overview
General Information
Sample name: | justificant de transfer#U00e8ncia.vbsrenamed because original name is a hash value |
Original sample name: | justificant de transferncia.vbs |
Analysis ID: | 1427932 |
MD5: | 6d2f93878e625759f49553c5f971ddc9 |
SHA1: | bf821caba21c6786fb3c0657259fa9e6fa09aace |
SHA256: | b6938d3e36a7d58523cd80f095f36593e0de47fe6d65dd74e5e91c0719a3849c |
Tags: | AgentTeslaGuLoadervbs |
Infos: | |
Detection
Score: | 96 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus detection for URL or domain
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
VBScript performs obfuscated calls to suspicious functions
Found suspicious powershell code related to unpacking or dynamic code loading
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Suspicious powershell command line found
Very long command line found
Wscript starts Powershell (via cmd or directly)
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
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)
JA3 SSL client fingerprint seen in connection with other malware
Java / VBScript file with very long strings (likely obfuscated code)
May sleep (evasive loops) to hinder dynamic analysis
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Sigma detected: WSF/JSE/JS/VBA/VBE File Execution Via Cscript/Wscript
Uses a known web browser user agent for HTTP communication
Uses code obfuscation techniques (call, push, ret)
Very long cmdline option found, this is very uncommon (may be encrypted or packed)
Yara signature match
Classification
- System is w10x64
- wscript.exe (PID: 4836 cmdline:
C:\Windows \System32\ WScript.ex e "C:\User s\user\Des ktop\justi ficant de transfer#U 00e8ncia.v bs" MD5: A47CBE969EA935BDD3AB568BB126BC80) - powershell.exe (PID: 7180 cmdline:
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