General

  • Target

    174255ee4e6d74fb86b6f16eae3d0298cef64bc991fa8e6c8e9d13b958b657de.rar

  • Size

    687KB

  • Sample

    240523-bjasvafh71

  • MD5

    a29a3627858399ef50e86d41bb8b31d8

  • SHA1

    2571206ee8d59606df9ebdfc426f9a3bdd1696b7

  • SHA256

    174255ee4e6d74fb86b6f16eae3d0298cef64bc991fa8e6c8e9d13b958b657de

  • SHA512

    546b08738513aaf7d18862cd9e2703c3df52e2b1427fe9998c697d56baa5958cb8150817900f1f32ab900d734608f87c20b4d2a826b1748450200d85166d1a2b

  • SSDEEP

    12288:mLhh7hNqvyvC/xIylghrOhFTEpT3pPBtKDeQopaMWpfB4NHR/sEK6Yg1h:Uh7DqK6SUgh0NSTaB6/TN6EKtO

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.bethesdakindergarten.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    kindy6014587474

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      Quotation specifications draft20001.exe

    • Size

      844KB

    • MD5

      e4aaca7e0fe69ced3fc467506885a9d9

    • SHA1

      dd9554514cba10808aa3e0f32c9f5f22c37e6995

    • SHA256

      db6e594697d85074a16f8ce893649435b356c1ae31724203df7e5463bb97d1fc

    • SHA512

      8254f7c3844db4e95f98431a00c7795650b5c9720670aac178b87c2ac444c86e34bc84f53ffd59fda16781aab6fcc86fcf81850f007189ca65db2c61dfbdbbc5

    • SSDEEP

      24576:Vw4bjw4bajqV8d707FhxVROXXaeSA+oafS7:Vw4bjw4bajN0xPOCBfk

    • 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.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks