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General

  • Target

    85d86b35598fc8dd2385b3ee5b0422a2485b42c9642cb2b3ee70e9e2c09f9297.zip

  • Size

    48KB

  • Sample

    240406-br42nagd9s

  • MD5

    2f59ea72687ed5346508e5da6888d0a1

  • SHA1

    01e39cfef91af891c27c027064c742ce73dc23eb

  • SHA256

    85d86b35598fc8dd2385b3ee5b0422a2485b42c9642cb2b3ee70e9e2c09f9297

  • SHA512

    b6cdcccb25452c790d8645d1bc4f4062c6c8b58350d27c2b0f545e79987450c71357374ca49f7b8535c6c8706bfb5149be23eaef89a72121d036051d0b1c0058

  • SSDEEP

    768:owkf0vTCAu0YfSqJmJ8FjZg5IIPdYMfS/PRb9L/HuMAewyzxN7Zj:Y83upfJmJQNAza/Pp9zHvAeDxj

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      - Salary payrollAuthorization - Apr-24. pdf.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