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Analysis

  • max time kernel
    95s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7v200430
  • submitted
    09/07/2020, 12:17

General

  • Target

    ANNEX SALES CONTRACT DOC SIGNED.exe

  • Size

    581KB

  • MD5

    5292c2a557d193f22ba04f9f7a81e521

  • SHA1

    94425b344d5a6dde203d38948659659229df6119

  • SHA256

    a8c715b2f18e39ff613f8fdd17388a7b1e51044a4a147b52cb40072fdfc9b49a

  • SHA512

    732ad21febdd1844a37bd48935c25a3defb25fe7ab05f1519ca59dfdcf7f9e18a5d8671dc683131773b40e5056fbbc3c7cff7af45030146d76d71346d3614398

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.rebu.co.rw/
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    o^Z0CIU?^yL2

  • Protocol:
    ftp
  • Host:
    ftp://ftp.rebu.co.rw/
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    o^Z0CIU?^yL2

Signatures

  • AgentTesla

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

  • AgentTesla Payload 4 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ANNEX SALES CONTRACT DOC SIGNED.exe
    "C:\Users\Admin\AppData\Local\Temp\ANNEX SALES CONTRACT DOC SIGNED.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:888
    • C:\Users\Admin\AppData\Local\Temp\ANNEX SALES CONTRACT DOC SIGNED.exe
      "{path}"
      2⤵
        PID:1324
      • C:\Users\Admin\AppData\Local\Temp\ANNEX SALES CONTRACT DOC SIGNED.exe
        "{path}"
        2⤵
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1240
        • C:\Windows\SysWOW64\netsh.exe
          "netsh" wlan show profile
          3⤵
            PID:1608

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/1240-2-0x0000000000400000-0x0000000000452000-memory.dmp

        Filesize

        328KB

      • memory/1240-4-0x0000000000400000-0x0000000000452000-memory.dmp

        Filesize

        328KB

      • memory/1240-5-0x0000000000400000-0x0000000000452000-memory.dmp

        Filesize

        328KB