General

  • Target

    395a45f3510c96310eeb7974a52fd3966ae43142a9bb26f60f8d773ac88cfa38.exe

  • Size

    763KB

  • Sample

    240612-bntrhsxdre

  • MD5

    f4715542195c74fb6604a67ce1a235e1

  • SHA1

    4251a06f4750edd2bf87396d80871cb502f24d1a

  • SHA256

    395a45f3510c96310eeb7974a52fd3966ae43142a9bb26f60f8d773ac88cfa38

  • SHA512

    3b74ea425c33f4d42b0e80ec38ad3cecd8ce607220340cae05c417f1f420adb21c5f30b9719f97c8268bc92de188539afb82d8d1bbc9ddddc47c9b8ece6f4d63

  • SSDEEP

    12288:ofJD3HH3DI+Ej8s1O1dHFJ/dQKtmof5E3Z3nDOv0klXq9Sumy0Wbt1yAF:qJjH3DI9LArHFrbt5f5M3DWdsSuF00Hy

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      395a45f3510c96310eeb7974a52fd3966ae43142a9bb26f60f8d773ac88cfa38.exe

    • Size

      763KB

    • MD5

      f4715542195c74fb6604a67ce1a235e1

    • SHA1

      4251a06f4750edd2bf87396d80871cb502f24d1a

    • SHA256

      395a45f3510c96310eeb7974a52fd3966ae43142a9bb26f60f8d773ac88cfa38

    • SHA512

      3b74ea425c33f4d42b0e80ec38ad3cecd8ce607220340cae05c417f1f420adb21c5f30b9719f97c8268bc92de188539afb82d8d1bbc9ddddc47c9b8ece6f4d63

    • SSDEEP

      12288:ofJD3HH3DI+Ej8s1O1dHFJ/dQKtmof5E3Z3nDOv0klXq9Sumy0Wbt1yAF:qJjH3DI9LArHFrbt5f5M3DWdsSuF00Hy

    • 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

    • 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