Analysis

  • max time kernel
    145s
  • max time network
    112s
  • platform
    windows10_x64
  • resource
    win10v200722
  • submitted
    19/08/2020, 13:10

General

  • Target
    PO 20-S880320V8.exe
  • Size 538KB
  • Sample200819-259ktwvpj6
  • SHA256 8207b09240b974dbc811f65ba6ce318511c2148c22bcc73c5a35f034ae2bb7b6
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • agenttesla

Credentials
  • Protocol

    smtp

  • Host

    smtp.yandex.com

  • Port

    587

  • Password

    ALIbaba123

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 SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO 20-S880320V8.exe
    "C:\Users\Admin\AppData\Local\Temp\PO 20-S880320V8.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:640
    • C:\Users\Admin\AppData\Local\Temp\PO 20-S880320V8.exe
      "C:\Users\Admin\AppData\Local\Temp\PO 20-S880320V8.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:3888

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/640-0-0x0000000073120000-0x000000007380E000-memory.dmp

        memory/640-1-0x0000000000190000-0x0000000000191000-memory.dmp

        memory/640-3-0x0000000002460000-0x000000000246E000-memory.dmp

        memory/640-4-0x00000000058F0000-0x00000000058F1000-memory.dmp

        memory/640-5-0x00000000054D0000-0x00000000054D1000-memory.dmp

        memory/640-6-0x0000000005130000-0x0000000005133000-memory.dmp

        memory/3888-7-0x0000000000400000-0x0000000000466000-memory.dmp

        memory/3888-9-0x0000000073120000-0x000000007380E000-memory.dmp

        memory/3888-13-0x00000000054E0000-0x00000000054E1000-memory.dmp

        memory/3888-14-0x00000000056F0000-0x00000000056F1000-memory.dmp

        memory/3888-15-0x0000000005BA0000-0x0000000005BA1000-memory.dmp

        memory/3888-17-0x0000000006A10000-0x0000000006A11000-memory.dmp