General

  • Target

    66f51ee1deb34f149491e55735e671876e22fe37f749fdfa30238041a35bafc6.exe

  • Size

    672KB

  • Sample

    240905-mf6xnaybrl

  • MD5

    c418187a5268d408094b89aa79e3a5a2

  • SHA1

    a5a24c8aeef29107cb3a72acbe45d77274ee3cf9

  • SHA256

    66f51ee1deb34f149491e55735e671876e22fe37f749fdfa30238041a35bafc6

  • SHA512

    81cd5895c5854f7e58b0fbed8f77e93a7a5c89e2a32b9921061e6235cbd4c16a0c7ecd80c83d52b4e388f9c78c8198041bdf36dfe3afa217f3f2aaefef43e822

  • SSDEEP

    12288:vvBKYvI8cu/ZRrJt6cGMJIfAXL2RR3IKE0M8wkFoJJprYuBC5o:3OqLrJt3lJbC/3IKUOoJJpfg5

Malware Config

Extracted

Family

agenttesla

Credentials

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Password: )NYyffR0

Targets

    • Target

      66f51ee1deb34f149491e55735e671876e22fe37f749fdfa30238041a35bafc6.exe

    • Size

      672KB

    • MD5

      c418187a5268d408094b89aa79e3a5a2

    • SHA1

      a5a24c8aeef29107cb3a72acbe45d77274ee3cf9

    • SHA256

      66f51ee1deb34f149491e55735e671876e22fe37f749fdfa30238041a35bafc6

    • SHA512

      81cd5895c5854f7e58b0fbed8f77e93a7a5c89e2a32b9921061e6235cbd4c16a0c7ecd80c83d52b4e388f9c78c8198041bdf36dfe3afa217f3f2aaefef43e822

    • SSDEEP

      12288:vvBKYvI8cu/ZRrJt6cGMJIfAXL2RR3IKE0M8wkFoJJprYuBC5o:3OqLrJt3lJbC/3IKUOoJJpfg5

    • AgentTesla

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

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • 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