General

  • Target

    Offer # E21016 - R1.pdf.exe

  • Size

    175KB

  • Sample

    221103-ny1n2acbbk

  • MD5

    49212e72f4c7a6ea7c14c214d6d5dac6

  • SHA1

    e274162f1070e92e64a7836e6fd013d1b8ba583a

  • SHA256

    d5afe36401b247bc59fce44a33f1c4244e2d348665da758a8ffecbbfff3b58b2

  • SHA512

    08b834a6891eae0578cce9ddbb7ee1d0062da5ba88ae3b5cd670b6b7fb8f5ae4b2ce3dfb366c1751954db7433e65ff22b9ac3d2aa9bf5c35fa86537298fdc95d

  • SSDEEP

    3072:qUJoFfWzzl+cSMuajlIP7xQzv1yt2MvZLLPmLtbiXvH0TgjZm11tl80npoXW1sJ5:qweEpuUlIjxUytHvxLCAH0TfVnpofJe2

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    ydQaYkH6

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    ydQaYkH6

Targets

    • Target

      Offer # E21016 - R1.pdf.exe

    • Size

      175KB

    • MD5

      49212e72f4c7a6ea7c14c214d6d5dac6

    • SHA1

      e274162f1070e92e64a7836e6fd013d1b8ba583a

    • SHA256

      d5afe36401b247bc59fce44a33f1c4244e2d348665da758a8ffecbbfff3b58b2

    • SHA512

      08b834a6891eae0578cce9ddbb7ee1d0062da5ba88ae3b5cd670b6b7fb8f5ae4b2ce3dfb366c1751954db7433e65ff22b9ac3d2aa9bf5c35fa86537298fdc95d

    • SSDEEP

      3072:qUJoFfWzzl+cSMuajlIP7xQzv1yt2MvZLLPmLtbiXvH0TgjZm11tl80npoXW1sJ5:qweEpuUlIjxUytHvxLCAH0TfVnpofJe2

    • AgentTesla

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

    • Executes dropped EXE

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Loads dropped DLL

    • 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.

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks