Windows 7 deprecation

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General

  • Target

    purchase01162023.pdf.iso

  • Size

    1.2MB

  • Sample

    231011-r71xyaec3w

  • MD5

    d5da2e3231eaccfba977e825857a9e1a

  • SHA1

    d5a36a1a76d0be15f90748c25ed4af4a9b32c354

  • SHA256

    933828f874899c808e5cd0291905be3931ee3052cbf072a1784093c9d1369083

  • SHA512

    98472a2016dc4f5cd846bf7bc9f2a46ca7f544daeb41ec37bce25ee0393e9ba7719480604958e2cd132a104ca30ce70dcc1fb2b8c9ac672253d6b67377e80e8c

  • SSDEEP

    12288:S725B9c4klaJEJ/hbedok6Vl+zTE40UvuPyHn+9YVFa7WkERBgahOhB:ptc4klKE5hbSokmAQ4Dvu6+7cgrB

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      PURCHASE.EXE

    • Size

      589KB

    • MD5

      f4f17865d15852d7ca7acc8a3458e3ba

    • SHA1

      041a89729db626b52ccb6734a543d24775206edc

    • SHA256

      fa6cfed07797c6a3fc1962de2c17bc2065431f4fdfa209b77d8a7f28051ec2d8

    • SHA512

      b386f95445caa17be17e145daf3defa745a156cad2764b8b7819da055ae4429c5b52787835bd5f53ce0c7d0627e395197e77874ea0837e2ef516b837e6c7646d

    • SSDEEP

      12288:0725B9c4klaJEJ/hbedok6Vl+zTE40UvuPyHn+9YVFa7WkERBgahOhB:Htc4klKE5hbSokmAQ4Dvu6+7cgrB

    • AgentTesla

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

    • Checks computer location settings

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

    • 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.

    • Accesses Microsoft Outlook profiles

    • 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 v15

Tasks