General

  • Target

    PO207790.xls

  • Size

    1.7MB

  • Sample

    230616-q3jbnaeh91

  • MD5

    b12ed68cdbac917994444b5d30d84043

  • SHA1

    137fb253ae433cabddfebba9c9e541cc49b8f8ce

  • SHA256

    c81a1afc4f9e8588907d1cdb78b0bb50ab10a5a4cffe2022ad8dfa1e749a6ca2

  • SHA512

    65bf6400a84ac4b1d00db8e3e2234057c0f0eed33eb9c30ffec60cdd6d820f781a5a7eef42b44d7e5bb15bc7be2d77514437ede64e463ac0660021d660f6e888

  • SSDEEP

    24576:Eu9VDt6IE3ziabzu9VSt6IE3ziabUnaWsyVZWgSPqkZjl1F:EuLt6Iza3uKt6IzaGs6NSS0Z

Malware Config

Targets

    • Target

      PO207790.xls

    • Size

      1.7MB

    • MD5

      b12ed68cdbac917994444b5d30d84043

    • SHA1

      137fb253ae433cabddfebba9c9e541cc49b8f8ce

    • SHA256

      c81a1afc4f9e8588907d1cdb78b0bb50ab10a5a4cffe2022ad8dfa1e749a6ca2

    • SHA512

      65bf6400a84ac4b1d00db8e3e2234057c0f0eed33eb9c30ffec60cdd6d820f781a5a7eef42b44d7e5bb15bc7be2d77514437ede64e463ac0660021d660f6e888

    • SSDEEP

      24576:Eu9VDt6IE3ziabzu9VSt6IE3ziabUnaWsyVZWgSPqkZjl1F:EuLt6Iza3uKt6IzaGs6NSS0Z

    • AgentTesla

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

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • 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.

    • 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