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General

  • Target

    66e4e0b05fbe673afbd9f23ada369eaab823c2ce0285b5004068d6b03e3449e7.exe

  • Size

    1007KB

  • Sample

    240416-bk3j9afd3z

  • MD5

    3fdac5be870ce5d0c30c06854203624a

  • SHA1

    616317b2de7a62935c0630439b4bd884e8c79f3e

  • SHA256

    66e4e0b05fbe673afbd9f23ada369eaab823c2ce0285b5004068d6b03e3449e7

  • SHA512

    686fb0dcd723a1fe005b8d4f0e1d014caf1a9b7eebceffd75b48949f7fce3a32457d215fbbe0d65ef69c98a52b0190cc8feaf90b363cae7ee311344aba7342a9

  • SSDEEP

    12288:UJ4NBFTi6/LSqFb4R7u59FSIogAHpXBoftbQleal:a4NH/LScb4Vu5aIogIpXe6lea

Malware Config

Extracted

Family

agenttesla

Credentials

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.almaks.rs
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    102Alma03-3

Targets

    • Target

      66e4e0b05fbe673afbd9f23ada369eaab823c2ce0285b5004068d6b03e3449e7.exe

    • Size

      1007KB

    • MD5

      3fdac5be870ce5d0c30c06854203624a

    • SHA1

      616317b2de7a62935c0630439b4bd884e8c79f3e

    • SHA256

      66e4e0b05fbe673afbd9f23ada369eaab823c2ce0285b5004068d6b03e3449e7

    • SHA512

      686fb0dcd723a1fe005b8d4f0e1d014caf1a9b7eebceffd75b48949f7fce3a32457d215fbbe0d65ef69c98a52b0190cc8feaf90b363cae7ee311344aba7342a9

    • SSDEEP

      12288:UJ4NBFTi6/LSqFb4R7u59FSIogAHpXBoftbQleal:a4NH/LScb4Vu5aIogIpXe6lea

    • 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 binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion

    • 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

    • 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