Analysis

  • max time kernel
    130s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    24/06/2021, 11:49

General

  • Target
    QTN TECHN 80654.exe
  • Size 1.7MB
  • Sample210624-q127ksemms
  • SHA256 372a1eff95efebac004946b062fafd38a69b2f9c4d2c900335b22353a4646d2e
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • agenttesla

Credentials
  • Protocol

    smtp

  • Host

    mail.buynsell.com.pk

  • Port

    587

  • Password

    9DdbVxrWBXPq

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • Drops file in Drivers directory 1 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 SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\QTN TECHN 80654.exe
    "C:\Users\Admin\AppData\Local\Temp\QTN TECHN 80654.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1072
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CFsglLfaDHbcrw" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1822.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:524
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "{path}"
      2⤵
      • Drops file in Drivers directory
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:704

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/704-67-0x0000000000400000-0x000000000043C000-memory.dmp

        memory/704-69-0x0000000000400000-0x000000000043C000-memory.dmp

        memory/704-71-0x0000000004B10000-0x0000000004B11000-memory.dmp

        memory/704-72-0x0000000004B11000-0x0000000004B12000-memory.dmp

        memory/1072-59-0x0000000000900000-0x0000000000901000-memory.dmp

        memory/1072-61-0x0000000006F10000-0x0000000006F11000-memory.dmp

        memory/1072-62-0x00000000008F0000-0x00000000008F2000-memory.dmp

        memory/1072-63-0x0000000007690000-0x000000000770B000-memory.dmp

        memory/1072-64-0x0000000000AC0000-0x0000000000AF9000-memory.dmp