Analysis

  • max time kernel
    96s
  • max time network
    55s
  • platform
    windows7_x64
  • resource
    win7
  • submitted
    28/07/2020, 00:22

General

  • Target
    PURCHASE ORDER P20-1241.pdf_____.exe
  • Size 712KB
  • Sample200728-3hxwtq15ce
  • SHA256 2e0aee7e26c5c4a21386d93a6a6c7aaac2d8b6581f9f67103ae250ccd1e6570e
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • agenttesla

Credentials
  • Protocol

    smtp

  • Host

    smtp.yandex.com

  • Port

    587

  • Password

    opjis0123

Signatures

  • AgentTesla

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

  • AgentTesla Payload 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER P20-1241.pdf_____.exe
    "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER P20-1241.pdf_____.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:672
    • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
      "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1532

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1532-4-0x0000000000400000-0x000000000044C000-memory.dmp

        memory/1532-7-0x0000000000400000-0x000000000044C000-memory.dmp

        memory/1532-8-0x0000000000400000-0x000000000044C000-memory.dmp