Analysis

  • max time kernel
    148s
  • max time network
    15s
  • platform
    windows7_x64
  • resource
    win7v200722
  • submitted
    14/10/2020, 19:41

General

  • Target
    SecuriteInfo.com.BehavesLike.Win32.Generic.jc.10253.exe
  • Size 667KB
  • Sample201014-2j8x87yp8j
  • SHA256 3fdeeff9063421be07d09d4e1af9d7051e036ca556749cd82aaf6335593f7dc9
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • agenttesla

Credentials
  • Protocol

    smtp

  • Host

    mail.cafsrl.com.ar

  • Port

    587

  • Password

    caf123

Signatures

  • AgentTesla

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

  • AgentTesla Payload 4 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BehavesLike.Win32.Generic.jc.10253.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BehavesLike.Win32.Generic.jc.10253.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:848
    • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BehavesLike.Win32.Generic.jc.10253.exe
      "{path}"
      2⤵
        PID:1880
      • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BehavesLike.Win32.Generic.jc.10253.exe
        "{path}"
        2⤵
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: RenamesItself
        • Suspicious use of AdjustPrivilegeToken
        PID:1896

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/848-0-0x0000000074230000-0x000000007491E000-memory.dmp

          memory/848-1-0x00000000009E0000-0x00000000009E1000-memory.dmp

          memory/848-3-0x00000000003A0000-0x00000000003A4000-memory.dmp

          memory/848-4-0x0000000005360000-0x00000000053D4000-memory.dmp

          memory/848-5-0x00000000059C0000-0x0000000005A32000-memory.dmp

          memory/1896-6-0x0000000000400000-0x000000000043C000-memory.dmp

          memory/1896-8-0x0000000000400000-0x000000000043C000-memory.dmp

          memory/1896-9-0x0000000000400000-0x000000000043C000-memory.dmp

          memory/1896-10-0x0000000073B40000-0x000000007422E000-memory.dmp