Analysis

  • max time kernel
    136s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-05-2022 23:16

General

  • Target

    Cotización.exe

  • Size

    633KB

  • MD5

    db9bd8b19c0dfa9f3dbcf6c1eb2db758

  • SHA1

    402271c81c2206ce62eb6a9a84468df7cf23c657

  • SHA256

    c5411f20ee7c363ca543f00f10c8504da8d0cd87221333deb952bc3ee8f7a29b

  • SHA512

    37b4b718da4d38236d0a169f9331ff821915e663c67c003abab0df14e691c047080deece2e3b31be75ceb355b90d7ae91a14ab3214145bde62f7e77272304e94

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    westernpremierplus

Signatures

  • AgentTesla

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

  • AgentTesla Payload 6 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Cotización.exe
    "C:\Users\Admin\AppData\Local\Temp\Cotización.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1824
    • C:\Users\Admin\AppData\Local\Temp\Cotización.exe
      "C:\Users\Admin\AppData\Local\Temp\Cotización.exe"
      2⤵
        PID:1020
      • C:\Users\Admin\AppData\Local\Temp\Cotización.exe
        "C:\Users\Admin\AppData\Local\Temp\Cotización.exe"
        2⤵
          PID:1564
        • C:\Users\Admin\AppData\Local\Temp\Cotización.exe
          "C:\Users\Admin\AppData\Local\Temp\Cotización.exe"
          2⤵
            PID:1220
          • C:\Users\Admin\AppData\Local\Temp\Cotización.exe
            "C:\Users\Admin\AppData\Local\Temp\Cotización.exe"
            2⤵
            • Accesses Microsoft Outlook profiles
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            • outlook_office_path
            • outlook_win_path
            PID:1244

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/1244-65-0x000000000045401E-mapping.dmp

        • memory/1244-60-0x0000000000400000-0x000000000045A000-memory.dmp

          Filesize

          360KB

        • memory/1244-59-0x0000000000400000-0x000000000045A000-memory.dmp

          Filesize

          360KB

        • memory/1244-62-0x0000000000400000-0x000000000045A000-memory.dmp

          Filesize

          360KB

        • memory/1244-63-0x0000000000400000-0x000000000045A000-memory.dmp

          Filesize

          360KB

        • memory/1244-64-0x0000000000400000-0x000000000045A000-memory.dmp

          Filesize

          360KB

        • memory/1244-67-0x0000000000400000-0x000000000045A000-memory.dmp

          Filesize

          360KB

        • memory/1244-69-0x0000000000400000-0x000000000045A000-memory.dmp

          Filesize

          360KB

        • memory/1824-55-0x0000000075E31000-0x0000000075E33000-memory.dmp

          Filesize

          8KB

        • memory/1824-56-0x0000000000380000-0x000000000038A000-memory.dmp

          Filesize

          40KB

        • memory/1824-57-0x0000000004F50000-0x0000000004FC4000-memory.dmp

          Filesize

          464KB

        • memory/1824-58-0x0000000002140000-0x000000000219A000-memory.dmp

          Filesize

          360KB

        • memory/1824-54-0x00000000002C0000-0x0000000000364000-memory.dmp

          Filesize

          656KB