Analysis

  • max time kernel
    151s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 12:00

General

  • Target

    0080900000000000004.exe

  • Size

    508KB

  • MD5

    697e07591d78360f5544a6d5d6f7cf65

  • SHA1

    6462fa2d20234ebe218d43126d0b3e0d407e868c

  • SHA256

    9af31d18ef5af8d20ed75f9cc76185d119990e2adea7748c16562359a1dc3d5d

  • SHA512

    484e69510061cd2a6a9b7188de95c2b0c8c421f09a342ae505f671aa59f08f733fbf695c3e7af390b8357be5ff678e5472ec4755ab0f63a8c7e36806d5881948

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.ionos.mx
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    lp475869

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.ionos.mx
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    lp475869

Signatures

  • AgentTesla

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

  • SnakeBOT

    SnakeBOT is a heavily obfuscated .NET downloader.

  • AgentTesla Payload 1 IoCs
  • Contains SnakeBOT related strings 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0080900000000000004.exe
    "C:\Users\Admin\AppData\Local\Temp\0080900000000000004.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3440
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LsoUSx" /XML "C:\Users\Admin\AppData\Local\Temp\tmp665B.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:872
    • C:\Users\Admin\AppData\Local\Temp\0080900000000000004.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:3944
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:1224

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp665B.tmp

      Filesize

      1KB

      MD5

      7f96a2028a2f1d89df17b47402066b26

      SHA1

      ec54d1bc9bba41287d7f90bd0e8308bcd6b6ea49

      SHA256

      31953916152219586146518510c58c17a262eea5afc76312dcdd8c91910096c4

      SHA512

      8685e689d2c084c2d1b978c166fc19757e4a31b030acabe80f4613c3b875407babad642f809cae1d107b7733a36117ca1b89a73a08c1f7c5d0705d12e31e2b88

    • memory/872-135-0x0000000000000000-mapping.dmp

    • memory/1224-140-0x0000000000000000-mapping.dmp

    • memory/3440-130-0x0000000000640000-0x00000000006C8000-memory.dmp

      Filesize

      544KB

    • memory/3440-131-0x00000000079F0000-0x0000000007F94000-memory.dmp

      Filesize

      5.6MB

    • memory/3440-132-0x0000000007530000-0x00000000075C2000-memory.dmp

      Filesize

      584KB

    • memory/3440-133-0x00000000076D0000-0x00000000076DA000-memory.dmp

      Filesize

      40KB

    • memory/3440-134-0x0000000005000000-0x000000000509C000-memory.dmp

      Filesize

      624KB

    • memory/3944-137-0x0000000000000000-mapping.dmp

    • memory/3944-138-0x0000000000400000-0x0000000000452000-memory.dmp

      Filesize

      328KB

    • memory/3944-139-0x0000000005990000-0x00000000059F6000-memory.dmp

      Filesize

      408KB

    • memory/3944-141-0x0000000006510000-0x0000000006560000-memory.dmp

      Filesize

      320KB