General

  • Target
    2a34fdbd85ede8fa71f6c5133c3b38ce86334a0ec30cec9081b7b5d33cb6edf3.exe
  • Size 2.3MB
  • Sample240611-bgl34aydnj
  • SHA256 2a34fdbd85ede8fa71f6c5133c3b38ce86334a0ec30cec9081b7b5d33cb6edf3
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Credentials
  • Protocol

    smtp

  • Host

    mail.oserfech.eu

  • Port

    587

  • Password

    Epicoffice@2024

Extracted

Family
  • agenttesla

Credentials

Targets

    • Target
      2a34fdbd85ede8fa71f6c5133c3b38ce86334a0ec30cec9081b7b5d33cb6edf3.exe
    • Size 2.3MB
    • SHA256 2a34fdbd85ede8fa71f6c5133c3b38ce86334a0ec30cec9081b7b5d33cb6edf3
    • MD5 SHA1 SHA512 SSDEEP
    • AgentTesla

      Agent Tesla is a remote access tool (RAT) written in visual basic.

    • UAC bypass

    • Windows security bypass

    • Detect packed .NET executables. Mostly AgentTeslaV4.

    • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

    • Detects executables packed with or use KoiVM

    • Detects executables referencing Windows vault credential objects. Observed in infostealers

    • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers

    • Detects executables referencing many email and collaboration clients. Observed in information stealers

    • Detects executables referencing many file transfer clients. Observed in information stealers

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Windows security modification

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks