General

  • Target

    3979eb243225878a1331722d77eeb7d5937691a9e81322bfe24f5ae23aa855f6.exe

  • Size

    670KB

  • Sample

    240523-bqafnagc6z

  • MD5

    784ba798f9aa395a8ed0cd2d1e557320

  • SHA1

    d368d6b2507f3523702b855a19f0b6eb8380320b

  • SHA256

    3979eb243225878a1331722d77eeb7d5937691a9e81322bfe24f5ae23aa855f6

  • SHA512

    9c806128da404126fccdce4e26e087d4121c80cdc7e23d29b5fe1dfa068a9e1dcad91d7f36c6c62885ba676d88e63c39906bf7babc4ce15994a4891770ba208b

  • SSDEEP

    12288:yfz4TLzf3S3WNDTOlZhMAKA/9hdW3GTTdxfCu5SY3+Uln+MymlyblNQbf:2z4TLzf3OWZiVMAz/9PWmTuuY/zmlyhS

Malware Config

Extracted

Family

agenttesla

Credentials

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.adgumrukmusavirligi.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    GizCvk2019!.

Targets

    • Target

      3979eb243225878a1331722d77eeb7d5937691a9e81322bfe24f5ae23aa855f6.exe

    • Size

      670KB

    • MD5

      784ba798f9aa395a8ed0cd2d1e557320

    • SHA1

      d368d6b2507f3523702b855a19f0b6eb8380320b

    • SHA256

      3979eb243225878a1331722d77eeb7d5937691a9e81322bfe24f5ae23aa855f6

    • SHA512

      9c806128da404126fccdce4e26e087d4121c80cdc7e23d29b5fe1dfa068a9e1dcad91d7f36c6c62885ba676d88e63c39906bf7babc4ce15994a4891770ba208b

    • SSDEEP

      12288:yfz4TLzf3S3WNDTOlZhMAKA/9hdW3GTTdxfCu5SY3+Uln+MymlyblNQbf:2z4TLzf3OWZiVMAz/9PWmTuuY/zmlyhS

    • 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

    • 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 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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks