General

  • Target

    26a854eec44fdf4a15204c2e9c34aba7cd5affa0b834cd93f5c4af68daaffa17.zip

  • Size

    681KB

  • Sample

    240604-bg95xsgf47

  • MD5

    45171f1a543cd63518ba68ee595a3593

  • SHA1

    7ce2af21f19063f3de977d1826d1b085e5113518

  • SHA256

    26a854eec44fdf4a15204c2e9c34aba7cd5affa0b834cd93f5c4af68daaffa17

  • SHA512

    da4abee86b4997ff562d4f651716833bb431b5adcb00a1c98329bd4bb7754b8d448a9e71fa85873674b05e7d1062cc3c4f5ead69dc399806437d3429ff88d775

  • SSDEEP

    12288:7BQAfPLRcBi9osdZeT4D2ewGQFjmvYe9qFedbEB8lzBZb4ztgiOsTb:7ZpVZekf/QFjmv1ldwB+7YdXb

Malware Config

Extracted

Family

agenttesla

Credentials

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.formosabag.co.id
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    @2022exim02^^**

Targets

    • Target

      SOA APR-MAY 2024.exe

    • Size

      865KB

    • MD5

      c0b9ff48615c0d13d454091b13eff54a

    • SHA1

      0c7ca395f8a439cfd6001d6d6b9224ac23f82c88

    • SHA256

      0d89f9c07d7604f3ca0f4949f17613d6b09a8445b8459e4fd57f0e10fe465ed0

    • SHA512

      606a3433bd0ef6b8efeed964b057177d163273fbf979c8797bbe6bc860cec74d0134a637262d9c880ccfc58e8cc5ad4887c96abc2b31e2c7467b536b2a51b8ba

    • SSDEEP

      24576:1MYedeaN5icFJHe0V/QFLmvl7V8x2Y2JgEUo:1MYe5N5icFdZZvl7ix2Y2JZ

    • AgentTesla

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

    • Detect packed .NET executables. Mostly AgentTeslaV4.

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

    • 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.

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • 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