Analysis

  • max time kernel
    135s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    18-10-2021 21:33

General

  • Target

    DOCUMENT.BAT.exe

  • Size

    491KB

  • MD5

    509657bf2cda328547347fb08192a545

  • SHA1

    dda0893857e46e43a869a2a0c0171d83da2c6fc5

  • SHA256

    fec4bd7fec11af96dc833563d61a8424e0e4bb0b332b5b423a871583c0fd44ca

  • SHA512

    29b9cc7df360740a51b560fe5a4b87f829ed706c7cdab4a508513d29c8b0c3318e1fcbe3dc2c3bd2d844570ccca14b7306f8e741e6468590630e74ab3f4d4eac

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.mudanzasdistintas.com.ar
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    icui4cu2@@

Signatures

  • AgentTesla

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

  • AgentTesla Payload 5 IoCs
  • 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DOCUMENT.BAT.exe
    "C:\Users\Admin\AppData\Local\Temp\DOCUMENT.BAT.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1596
    • C:\Users\Admin\AppData\Local\Temp\DOCUMENT.BAT.exe
      "C:\Users\Admin\AppData\Local\Temp\DOCUMENT.BAT.exe"
      2⤵
        PID:544
      • C:\Users\Admin\AppData\Local\Temp\DOCUMENT.BAT.exe
        "C:\Users\Admin\AppData\Local\Temp\DOCUMENT.BAT.exe"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:888

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/888-63-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/888-59-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/888-60-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/888-61-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/888-62-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/888-64-0x0000000000436DCE-mapping.dmp

    • memory/888-65-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/888-67-0x0000000000DC0000-0x0000000000DC1000-memory.dmp

      Filesize

      4KB

    • memory/1596-55-0x0000000075A71000-0x0000000075A73000-memory.dmp

      Filesize

      8KB

    • memory/1596-56-0x0000000004E80000-0x0000000004E81000-memory.dmp

      Filesize

      4KB

    • memory/1596-57-0x0000000000380000-0x0000000000388000-memory.dmp

      Filesize

      32KB

    • memory/1596-58-0x0000000004F70000-0x0000000004FC7000-memory.dmp

      Filesize

      348KB

    • memory/1596-53-0x0000000001000000-0x0000000001001000-memory.dmp

      Filesize

      4KB