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General

  • Target

    a27b31b2cb02ae9200b74ceb014df30696094c333fe23ede2bdc78df16e3587e.vbs

  • Size

    107KB

  • Sample

    240405-b1q66ahd23

  • MD5

    445148434bd2a15989252974b9970586

  • SHA1

    d3287d54b993761e68470b518236424b93ed3379

  • SHA256

    a27b31b2cb02ae9200b74ceb014df30696094c333fe23ede2bdc78df16e3587e

  • SHA512

    8a9ca470269241ad4d4441151209b2a5f0dcd48b6b106567c25da61151696a9205c1c6312ae695ff139b8d425f0e841887a9479947f4c5b398d8c239cc7053ed

  • SSDEEP

    3072:W7m5h8560AY5aIFxCQCQSgX6Aaqmftp+z7bvHfVTnydFiCuA2:W7m5660AY5aIFxCOSgX6Aaqmftpg77Hj

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      a27b31b2cb02ae9200b74ceb014df30696094c333fe23ede2bdc78df16e3587e.vbs

    • Size

      107KB

    • MD5

      445148434bd2a15989252974b9970586

    • SHA1

      d3287d54b993761e68470b518236424b93ed3379

    • SHA256

      a27b31b2cb02ae9200b74ceb014df30696094c333fe23ede2bdc78df16e3587e

    • SHA512

      8a9ca470269241ad4d4441151209b2a5f0dcd48b6b106567c25da61151696a9205c1c6312ae695ff139b8d425f0e841887a9479947f4c5b398d8c239cc7053ed

    • SSDEEP

      3072:W7m5h8560AY5aIFxCQCQSgX6Aaqmftp+z7bvHfVTnydFiCuA2:W7m5660AY5aIFxCOSgX6Aaqmftpg77Hj

    • 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 binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion

    • 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

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • 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 NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks