Analysis

  • max time kernel
    83s
  • max time network
    148s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    09/11/2020, 19:56

General

  • Target
    gunzipped.exe
  • Size 651KB
  • Sample201109-xtk7src6va
  • SHA256 0d2a1e1ae63f88fe43639ddcec25db83eef70cc09ed98403f570fb61293fcf2f
  • MD5 SHA1 SHA512

Malware Config

Extracted

Credentials
  • Protocol

    smtp

  • Host

    mail.flood-protection.org

  • Port

    587

  • Password

    sepp2424@

Extracted

Family
  • agenttesla

Credentials
  • Protocol

    smtp

  • Host

    mail.flood-protection.org

  • Port

    587

  • Password

    sepp2424@

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 IoCs
  • Obfuscated with Agile.Net obfuscator 1 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

  • 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
    "C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3412
    • C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
      "C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1316
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:3492

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/1316-10-0x0000000000400000-0x0000000000452000-memory.dmp

          memory/1316-22-0x0000000006040000-0x0000000006041000-memory.dmp

          memory/1316-19-0x0000000005B50000-0x0000000005B51000-memory.dmp

          memory/1316-18-0x0000000005090000-0x0000000005091000-memory.dmp

          memory/1316-17-0x0000000004FB0000-0x0000000004FB1000-memory.dmp

          memory/1316-13-0x0000000073E00000-0x00000000744EE000-memory.dmp

          memory/3412-5-0x00000000015B0000-0x00000000015B2000-memory.dmp

          memory/3412-9-0x00000000056E0000-0x00000000056E3000-memory.dmp

          memory/3412-8-0x0000000005710000-0x0000000005711000-memory.dmp

          memory/3412-7-0x0000000005660000-0x0000000005662000-memory.dmp

          memory/3412-6-0x00000000055A0000-0x00000000055A1000-memory.dmp

          memory/3412-0-0x0000000073E00000-0x00000000744EE000-memory.dmp

          memory/3412-4-0x00000000059C0000-0x00000000059C1000-memory.dmp

          memory/3412-3-0x00000000015A0000-0x00000000015AF000-memory.dmp

          memory/3412-1-0x0000000000BA0000-0x0000000000BA1000-memory.dmp