Analysis

  • max time kernel
    130s
  • max time network
    11s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    26/03/2021, 15:13

General

  • Target
    20ba9bdd96824f66bd2ebc613656353b.exe
  • Size 973KB
  • Sample210326-ev5eg7d1px
  • SHA256 0533e896717fa4ff365579e940b16d3e0543ccd319f4cee76c9ab71999a669b6
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • agenttesla

Credentials
  • Protocol

    smtp

  • Host

    smtpout.secureserver.net

  • Port

    587

  • Password

    password@123

Signatures

  • AgentTesla

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

  • AgentTesla Payload 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\20ba9bdd96824f66bd2ebc613656353b.exe
    "C:\Users\Admin\AppData\Local\Temp\20ba9bdd96824f66bd2ebc613656353b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:384
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bscRcnzoEb" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE4D3.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:728
    • C:\Users\Admin\AppData\Local\Temp\20ba9bdd96824f66bd2ebc613656353b.exe
      "C:\Users\Admin\AppData\Local\Temp\20ba9bdd96824f66bd2ebc613656353b.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:784

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/384-2-0x0000000074390000-0x0000000074A7E000-memory.dmp

        memory/384-3-0x00000000009A0000-0x00000000009A1000-memory.dmp

        memory/384-5-0x0000000004E80000-0x0000000004E81000-memory.dmp

        memory/384-6-0x0000000000380000-0x000000000038B000-memory.dmp

        memory/384-7-0x0000000004850000-0x00000000048B6000-memory.dmp

        memory/784-10-0x0000000000400000-0x000000000043C000-memory.dmp

        memory/784-12-0x0000000074390000-0x0000000074A7E000-memory.dmp

        memory/784-13-0x0000000000400000-0x000000000043C000-memory.dmp

        memory/784-15-0x0000000004C30000-0x0000000004C31000-memory.dmp