General

  • Target

    74bc25305325ee41319153323e722fb21fa052f0e5b0006d12894e906efcd838.exe

  • Size

    1.3MB

  • Sample

    240510-bx49lsec57

  • MD5

    ebc4645a07887e0f9c391f4802467dd1

  • SHA1

    3d5bcd29fe6b1fb74102f0cf5077800a12f65ecb

  • SHA256

    74bc25305325ee41319153323e722fb21fa052f0e5b0006d12894e906efcd838

  • SHA512

    6b566889f17d66714b54ce8bdbe5ece4084578122253c32d092dd9df6e57c50e4101914e9b8b6404ca75cd2a24e6ea8a84b7b85a7d58d362a3188421b6dc5849

  • SSDEEP

    24576:lZCD6lrkhKjLRKiTla0lPVlHomi7nqv70fa7Y5unPKUZXbOT:bl4Ku0lNlHombwS2UZiT

Malware Config

Extracted

Family

agenttesla

Credentials

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.azmaplast.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    QAZqaz123@@

Targets

    • Target

      74bc25305325ee41319153323e722fb21fa052f0e5b0006d12894e906efcd838.exe

    • Size

      1.3MB

    • MD5

      ebc4645a07887e0f9c391f4802467dd1

    • SHA1

      3d5bcd29fe6b1fb74102f0cf5077800a12f65ecb

    • SHA256

      74bc25305325ee41319153323e722fb21fa052f0e5b0006d12894e906efcd838

    • SHA512

      6b566889f17d66714b54ce8bdbe5ece4084578122253c32d092dd9df6e57c50e4101914e9b8b6404ca75cd2a24e6ea8a84b7b85a7d58d362a3188421b6dc5849

    • SSDEEP

      24576:lZCD6lrkhKjLRKiTla0lPVlHomi7nqv70fa7Y5unPKUZXbOT:bl4Ku0lNlHombwS2UZiT

    • 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 packed with SmartAssembly

    • 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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks