General

  • Target

    4a1fb344e8dfcaf7b270fff3827e5b36c4d7b6bb10a19bfa94925a24005017eb

  • Size

    745KB

  • Sample

    241120-bytjhayalr

  • MD5

    6a08375b26b74dc18348e04e96b5dc40

  • SHA1

    c26877648f63b55a4bf1d5f29af9d49018ea686e

  • SHA256

    4a1fb344e8dfcaf7b270fff3827e5b36c4d7b6bb10a19bfa94925a24005017eb

  • SHA512

    6038e358cbba3c2d292e6b87e485414ff6438e53b0d4da763651aea2850b2734bc319ad110aa7bd477dadf2ca6010b39312552b044b0bd3f1b981dc0c6c5bd1e

  • SSDEEP

    12288:jND0kZouq6kFTgO5Mkb1u0sQZwF/Qv6defvi5vb9/ehM9Z9g6Qb2:jRlZ7qVktkbwGG4iAfvith/e2TgB2

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.normagroup.com.tr
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    Qb.X[.j.Yfm[

Targets

    • Target

      CN-Statement of Accounts and ETax-OB-XXXXX6856-03012824201808801.exe

    • Size

      778KB

    • MD5

      4fd5ae8446fc97f481011ebe56bee23b

    • SHA1

      438e310a2a92cc1d889c29dada25d9a15ffbf0eb

    • SHA256

      6927f5860d17522a78a4e93599a9dc4230fa920f37665c5775250d02e18e9568

    • SHA512

      f2fdb70e40f889e0bd86b6527e5ceb28a224e2cb0ec71c7192d5e6fb2c855a12510f109f6132521a877dd71c35d972990a5b19412bbea5d9034628cc1178fc36

    • SSDEEP

      12288:j7jnKo7r7xDKW49kF9rIz38om4LsI0nF/dBhdRfviOxbCDTh5F:j7Wo7vNK9gNe8oBqF1TXfviW2Dt5

    • AgentTesla

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

    • Agenttesla family

    • 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