Analysis

  • max time kernel
    90s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    19/04/2022, 10:18

General

  • Target
    Invoice 0012.exe
  • Size 1018KB
  • Sample220419-mbx4ysccej
  • SHA256 1c2a86f4af3edfb07a7930f58159eefe0adb058b60618a3277543ac212acea50
  • MD5 SHA1 SHA512

Malware Config

Extracted

Credentials
  • Protocol

    smtp

  • Host

    mail.caesarbay.com

  • Port

    587

  • Password

    pu@2020

Extracted

Family
  • agenttesla

Credentials

Signatures

  • AgentTesla

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

  • suricata: ET MALWARE AgentTesla Exfil Via SMTP

    suricata: ET MALWARE AgentTesla Exfil Via SMTP

  • 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Invoice 0012.exe
    "C:\Users\Admin\AppData\Local\Temp\Invoice 0012.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4836
    • C:\Users\Admin\AppData\Local\Temp\Invoice 0012.exe
      "C:\Users\Admin\AppData\Local\Temp\Invoice 0012.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:4176

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/4176-137-0x0000000000400000-0x000000000043A000-memory.dmp

        memory/4176-138-0x0000000006260000-0x00000000062B0000-memory.dmp

        memory/4836-130-0x0000000000AF0000-0x0000000000BF4000-memory.dmp

        memory/4836-131-0x0000000005BA0000-0x0000000006144000-memory.dmp

        memory/4836-132-0x00000000055F0000-0x0000000005682000-memory.dmp

        memory/4836-133-0x00000000064F0000-0x00000000064FA000-memory.dmp

        memory/4836-134-0x0000000007A80000-0x0000000007B1C000-memory.dmp

        memory/4836-135-0x0000000009460000-0x00000000094C6000-memory.dmp