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General

  • Target

    vbc.exe

  • Size

    267KB

  • Sample

    230517-kramgsdd6y

  • MD5

    9cf450fc0f69cccd0aa1e7059ff464c6

  • SHA1

    b5eab54534e0465d243fd07cec0cfe9e2f1cd8b9

  • SHA256

    bebd0c5009a5b0b0a06fbe0020bd6f083ed90509771dbf1f8010e19e527bf464

  • SHA512

    d719450e3ae0ab4d7d8632cb566bdea00765e7b198f664af97323ec1a1f8898e20fd657402adb412bb4020d2c82335f6e3adf3b26402445a7a01c711b2a14ce1

  • SSDEEP

    6144:PYa6CNNIp895RaWAYVpPq73EKdmQO9ND8YkY80qd5pq:PY8Nqp895Ra/aBq73boQO9l8YkLo

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot2134979594:AAFk4QkrlHlt2a-q-EhIoHZBbzxSH0QxiBI/

Targets

    • Target

      vbc.exe

    • Size

      267KB

    • MD5

      9cf450fc0f69cccd0aa1e7059ff464c6

    • SHA1

      b5eab54534e0465d243fd07cec0cfe9e2f1cd8b9

    • SHA256

      bebd0c5009a5b0b0a06fbe0020bd6f083ed90509771dbf1f8010e19e527bf464

    • SHA512

      d719450e3ae0ab4d7d8632cb566bdea00765e7b198f664af97323ec1a1f8898e20fd657402adb412bb4020d2c82335f6e3adf3b26402445a7a01c711b2a14ce1

    • SSDEEP

      6144:PYa6CNNIp895RaWAYVpPq73EKdmQO9ND8YkY80qd5pq:PY8Nqp895Ra/aBq73boQO9l8YkLo

    • AgentTesla

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

    • 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.

    • Uses the VBS compiler for execution

    • Accesses Microsoft Outlook profiles

    • 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 v6

Tasks