Analysis

  • max time kernel
    125s
  • max time network
    132s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    17/08/2020, 08:09

General

  • Target
    Packing List.exe
  • Size 470KB
  • Sample200817-hlzcmcefds
  • SHA256 1d835ccaee0da78b01a8e8b1d738f195c8fc08ddcfa7da17223645a2bf47df04
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • agenttesla

Credentials
  • Protocol

    smtp

  • Host

    mail.threewaystoharems.com

  • Port

    587

  • Password

    sales@123456

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 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
  • 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 7 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Packing List.exe
    "C:\Users\Admin\AppData\Local\Temp\Packing List.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2788
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\VofGbcsZ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8817.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3932
    • C:\Users\Admin\AppData\Local\Temp\Packing List.exe
      "{path}"
      2⤵
        PID:3252
      • C:\Users\Admin\AppData\Local\Temp\Packing List.exe
        "{path}"
        2⤵
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: RenamesItself
        • Suspicious use of AdjustPrivilegeToken
        PID:3328

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          memory/2788-9-0x00000000052E0000-0x0000000005327000-memory.dmp

          memory/2788-4-0x0000000007CC0000-0x0000000007CC1000-memory.dmp

          memory/2788-5-0x00000000057E0000-0x00000000057E1000-memory.dmp

          memory/2788-6-0x0000000007FD0000-0x0000000007FD1000-memory.dmp

          memory/2788-7-0x00000000057F0000-0x00000000057F4000-memory.dmp

          memory/2788-8-0x0000000007F70000-0x0000000007FC9000-memory.dmp

          memory/2788-0-0x00000000738F0000-0x0000000073FDE000-memory.dmp

          memory/2788-1-0x0000000000EF0000-0x0000000000EF1000-memory.dmp

          memory/2788-3-0x00000000081C0000-0x00000000081C1000-memory.dmp

          memory/3328-12-0x0000000000400000-0x000000000044C000-memory.dmp

          memory/3328-15-0x00000000738F0000-0x0000000073FDE000-memory.dmp

          memory/3328-20-0x0000000005790000-0x0000000005791000-memory.dmp

          memory/3328-21-0x0000000006020000-0x0000000006021000-memory.dmp