Analysis

  • max time kernel
    137s
  • max time network
    125s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • 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 3 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 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:2164
    • C:\Users\Admin\AppData\Local\Temp\DOCUMENT.BAT.exe
      "C:\Users\Admin\AppData\Local\Temp\DOCUMENT.BAT.exe"
      2⤵
        PID:3076
      • 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:2996

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\DOCUMENT.BAT.exe.log

      MD5

      0c2899d7c6746f42d5bbe088c777f94c

      SHA1

      622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1

      SHA256

      5b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458

      SHA512

      ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078

    • memory/2164-122-0x0000000005020000-0x0000000005028000-memory.dmp

      Filesize

      32KB

    • memory/2164-118-0x0000000004BE0000-0x0000000004BE1000-memory.dmp

      Filesize

      4KB

    • memory/2164-119-0x0000000004D50000-0x0000000004D51000-memory.dmp

      Filesize

      4KB

    • memory/2164-120-0x0000000004B40000-0x000000000503E000-memory.dmp

      Filesize

      5.0MB

    • memory/2164-121-0x000000000A9C0000-0x000000000A9C1000-memory.dmp

      Filesize

      4KB

    • memory/2164-115-0x00000000001C0000-0x00000000001C1000-memory.dmp

      Filesize

      4KB

    • memory/2164-123-0x000000000ACC0000-0x000000000AD17000-memory.dmp

      Filesize

      348KB

    • memory/2164-117-0x0000000005040000-0x0000000005041000-memory.dmp

      Filesize

      4KB

    • memory/2996-124-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/2996-125-0x0000000000436DCE-mapping.dmp

    • memory/2996-131-0x0000000005620000-0x0000000005B1E000-memory.dmp

      Filesize

      5.0MB

    • memory/2996-132-0x0000000005AD0000-0x0000000005AD1000-memory.dmp

      Filesize

      4KB

    • memory/2996-133-0x0000000006380000-0x0000000006381000-memory.dmp

      Filesize

      4KB