Joe Sandbox Cloud Basic Analysis Report

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Windows Analysis Report
INVOICE_NO._29998172.exe

Overview

General Information

Sample Name:INVOICE_NO._29998172.exe
Analysis ID:876157
MD5:024997939b7ce9b28382176c0a70cec8
SHA1:48ef66cbadfff627b81794aaab7db1a6413cb43b
SHA256:13e98dcbf169f54503a15d9415b086222ae48f2e872c69c9417e56d29f610b85
Tags:exe
Infos:

Detection

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

Signatures

Found malware configuration
Multi AV Scanner detection for submitted file
Yara detected zgRAT
Malicious sample detected (through community Yara rule)
Yara detected AgentTesla
Sigma detected: Scheduled temp file as task from temp location
Multi AV Scanner detection for dropped file
Snort IDS alert for network traffic
Tries to steal Mail credentials (via file / registry access)
Initial sample is a PE file and has a suspicious name
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Machine Learning detection for sample
.NET source code contains potential unpacker
Machine Learning detection for dropped file
Adds a directory exclusion to Windows Defender
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sample uses string decryption to hide its real strings
Uses schtasks.exe or at.exe to add and modify task schedules
Tries to harvest and steal browser information (history, passwords, etc)
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
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
Contains long sleeps (>= 3 min)
Enables debug privileges
Creates a DirectInput object (often for capturing keystrokes)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Found inlined nop instructions (likely shell or obfuscated code)
Sample file is different than original file name gathered from version info
Drops PE files
Detected TCP or UDP traffic on non-standard ports
Uses SMTP (mail sending)
Queries sensitive processor information (via WMI, Win32_Processor, often done to detect virtual machines)
Creates a process in suspended mode (likely to inject code)
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)

Classification

Process Tree

  • System is w10x64
  • INVOICE_NO._29998172.exe (PID: 6856 cmdline: C:\Users\user\Desktop\INVOICE_NO._29998172.exe MD5: 024997939B7CE9B28382176C0A70CEC8)
    • powershell.exe (PID: 6944 cmdline: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\user\AppData\Roaming\txQleCu.exe MD5: DBA3E6449E97D4E3DF64527EF7012A10)
      • conhost.exe (PID: 7084 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • schtasks.exe (PID: 7076 cmdline: C:\Windows\System32\schtasks.exe" /Create /TN "Updates\txQleCu" /XML "C:\Users\user\AppData\Local\Temp\tmpEB82.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
      • conhost.exe (PID: 7060 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • INVOICE_NO._29998172.exe (PID: 6032 cmdline: C:\Users\user\Desktop\INVOICE_NO._29998172.exe MD5: 024997939B7CE9B28382176C0A70CEC8)
  • txQleCu.exe (PID: 6012 cmdline: C:\Users\user\AppData\Roaming\txQleCu.exe MD5: 024997939B7CE9B28382176C0A70CEC8)
    • schtasks.exe (PID: 6372 cmdline: C:\Windows\System32\schtasks.exe" /Create /TN "Updates\txQleCu" /XML "C:\Users\user\AppData\Local\Temp\tmp3339.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
      • conhost.exe (PID: 6376 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • txQleCu.exe (PID: 6656 cmdline: C:\Users\user\AppData\Roaming\txQleCu.exe MD5: 024997939B7CE9B28382176C0A70CEC8)
  • cleanup

Malware Threat Intel

Provided by

NameDescriptionAttributionBlogpost URLsLink
Agent Tesla, AgentTeslaA .NET based keylogger and RAT readily available to actors. Logs keystrokes and the host'