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Analysis

  • max time kernel
    133s
  • max time network
    135s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    09/07/2020, 06:35

General

  • Target

    Re Nanjing Yushan PO and Invoice_______________.exe

  • Size

    693KB

  • MD5

    c526de0ef069e08b79e6c09f8c30d098

  • SHA1

    cf0bbbd2b09b2e6bd499866d94be323872246510

  • SHA256

    4768c50fe2b58f069e4e67d0045392c11bfb291ac663bb8476a0e8c977387e00

  • SHA512

    e6662265066761fbb0a0569edd58a26665507055c5368207c26e03a71c34048b70dc8121e7741c723f41ee816147b076adbe17fab9ce82e0a7258db4d8d84be6

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.lokalboyz.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Pkl2awO}!@7o

Signatures

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • AgentTesla

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

  • Suspicious use of WriteProcessMemory 11 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

Processes

  • C:\Users\Admin\AppData\Local\Temp\Re Nanjing Yushan PO and Invoice_______________.exe
    "C:\Users\Admin\AppData\Local\Temp\Re Nanjing Yushan PO and Invoice_______________.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3908
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\SqWORxGznTIG" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7700.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3952
    • C:\Users\Admin\AppData\Local\Temp\Re Nanjing Yushan PO and Invoice_______________.exe
      "{path}"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:3608

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/3608-2-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB