Analysis

  • max time kernel
    94s
  • max time network
    112s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    16/12/2020, 08:08

General

  • Target
    d793effbc21fd5e9124e5d6769c90291.exe
  • Size 2.5MB
  • Sample201216-2efaz4pmw2
  • SHA256 1438338262db388d53a3618eacfe7ace5f6c1884bd4465b3a1bf548c5cdb42e5
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • agenttesla

Credentials
  • Protocol

    smtp

  • Host

    mail.sardaplywood.com

  • Port

    587

  • Password

    sup123st45

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.

  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d793effbc21fd5e9124e5d6769c90291.exe
    "C:\Users\Admin\AppData\Local\Temp\d793effbc21fd5e9124e5d6769c90291.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:756
    • C:\Users\Admin\AppData\Local\Temp\d793effbc21fd5e9124e5d6769c90291.exe
      "C:\Users\Admin\AppData\Local\Temp\d793effbc21fd5e9124e5d6769c90291.exe"
      2⤵
        PID:2652
      • C:\Users\Admin\AppData\Local\Temp\d793effbc21fd5e9124e5d6769c90291.exe
        "C:\Users\Admin\AppData\Local\Temp\d793effbc21fd5e9124e5d6769c90291.exe"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:3908

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          memory/756-6-0x000000000AF10000-0x000000000AF11000-memory.dmp

          memory/756-5-0x000000000A970000-0x000000000A971000-memory.dmp

          memory/756-2-0x00000000739A0000-0x000000007408E000-memory.dmp

          memory/756-7-0x00000000057D0000-0x00000000057D1000-memory.dmp

          memory/756-8-0x0000000005780000-0x0000000005781000-memory.dmp

          memory/756-9-0x0000000005790000-0x00000000057CD000-memory.dmp

          memory/756-3-0x0000000000D40000-0x0000000000D41000-memory.dmp

          memory/3908-10-0x0000000000400000-0x000000000043C000-memory.dmp

          memory/3908-13-0x00000000739A0000-0x000000007408E000-memory.dmp

          memory/3908-18-0x00000000054D0000-0x00000000054D1000-memory.dmp

          memory/3908-19-0x0000000005CA0000-0x0000000005CA1000-memory.dmp