Analysis

  • max time kernel
    111s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    19/04/2022, 04:17

General

  • Target
    Statement Of Account (3).exe
  • Size 917KB
  • Sample220419-ewc1hsfbd3
  • SHA256 8604f1c98675e3c0d417eb8c93fa89d12780b3d16e7bc3110ef3c8d3596db103
  • MD5 SHA1 SHA512

Malware Config

Extracted

Credentials
  • Protocol

    smtp

  • Host

    mail.laxmigarments.com

  • Port

    587

  • Password

    lax@54321!

Extracted

Family
  • agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Drops file in Drivers directory 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
  • Adds Run key to start application 2 TTPs 1 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 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\Statement Of Account (3).exe
    "C:\Users\Admin\AppData\Local\Temp\Statement Of Account (3).exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3900
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kmyQPzKJWUbE" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD314.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4140
    • C:\Users\Admin\AppData\Local\Temp\Statement Of Account (3).exe
      "{path}"
      2⤵
        PID:3568
      • C:\Users\Admin\AppData\Local\Temp\Statement Of Account (3).exe
        "{path}"
        2⤵
        • Drops file in Drivers directory
        • Accesses Microsoft Outlook profiles
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:4848

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          tmpD314.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\tmpD314.tmp
          • Size 1KB
          • SHA256 3e31f2e87bdb7f38d316c644a9e5e8c328d23b47f9c1fc116a5bc995931b9dea
          • MD5 SHA1 SHA512

          memory/3900-130-0x0000000000450000-0x000000000053E000-memory.dmp

          memory/3900-131-0x0000000007A20000-0x0000000007FC4000-memory.dmp

          memory/3900-132-0x0000000007510000-0x00000000075A2000-memory.dmp

          memory/3900-133-0x00000000075B0000-0x000000000764C000-memory.dmp

          memory/3900-134-0x00000000074B0000-0x00000000074BA000-memory.dmp

          memory/4848-139-0x0000000000400000-0x000000000043A000-memory.dmp

          memory/4848-140-0x0000000006260000-0x00000000062C6000-memory.dmp

          memory/4848-141-0x0000000006900000-0x0000000006950000-memory.dmp