Analysis

  • max time kernel
    134s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    23-10-2021 08:27

General

  • Target

    c3227083.exe

  • Size

    919KB

  • MD5

    8412498a27fff18a81f5e26deb501fa1

  • SHA1

    14977581341dcb8c86f1da576cf73ec62569e685

  • SHA256

    c32270831ffce61bd782cd8a053352d34f884738da53089eda4275f2c425cfc0

  • SHA512

    a5648e46c94f8fce27649f12f7a04f14a4f71337e5842931151a82219b94295d3c2d681dd00ebd072f90d910cddd14e430b90977091a430a6fff0da291ddbe87

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.tccinfaes.com
  • Port:
    587
  • Username:
    margaridasantos@tccinfaes.com
  • Password:
    TccBps1427log

Signatures

  • AgentTesla

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

  • AgentTesla Payload 5 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c3227083.exe
    "C:\Users\Admin\AppData\Local\Temp\c3227083.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:612
    • C:\Users\Admin\AppData\Local\Temp\c3227083.exe
      "{path}"
      2⤵
        PID:1812
      • C:\Users\Admin\AppData\Local\Temp\c3227083.exe
        "{path}"
        2⤵
          PID:1924
        • C:\Users\Admin\AppData\Local\Temp\c3227083.exe
          "{path}"
          2⤵
          • Accesses Microsoft Outlook profiles
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • outlook_office_path
          • outlook_win_path
          PID:668

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Credential Access

      Credentials in Files

      3
      T1081

      Collection

      Data from Local System

      3
      T1005

      Email Collection

      1
      T1114

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/612-54-0x0000000000090000-0x0000000000091000-memory.dmp
        Filesize

        4KB

      • memory/612-56-0x0000000075821000-0x0000000075823000-memory.dmp
        Filesize

        8KB

      • memory/612-57-0x0000000004E10000-0x0000000004E11000-memory.dmp
        Filesize

        4KB

      • memory/612-58-0x0000000000400000-0x000000000040E000-memory.dmp
        Filesize

        56KB

      • memory/612-59-0x00000000058D0000-0x000000000596A000-memory.dmp
        Filesize

        616KB

      • memory/612-60-0x0000000002130000-0x0000000002186000-memory.dmp
        Filesize

        344KB

      • memory/668-61-0x0000000000400000-0x000000000043C000-memory.dmp
        Filesize

        240KB

      • memory/668-62-0x0000000000400000-0x000000000043C000-memory.dmp
        Filesize

        240KB

      • memory/668-63-0x0000000000400000-0x000000000043C000-memory.dmp
        Filesize

        240KB

      • memory/668-64-0x0000000000400000-0x000000000043C000-memory.dmp
        Filesize

        240KB

      • memory/668-65-0x0000000000400000-0x000000000043C000-memory.dmp
        Filesize

        240KB

      • memory/668-66-0x000000000043763E-mapping.dmp
      • memory/668-67-0x0000000000400000-0x000000000043C000-memory.dmp
        Filesize

        240KB

      • memory/668-69-0x00000000047D0000-0x00000000047D1000-memory.dmp
        Filesize

        4KB

      • memory/668-70-0x00000000047D1000-0x00000000047D2000-memory.dmp
        Filesize

        4KB