Analysis

  • max time kernel
    143s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/05/2023, 07:21

General

  • Target
    4856aa91b3b25dc702acee5419906c0d.exe
  • Size 787KB
  • Sample230528-h6nrjsfa4s
  • SHA256 0140ef4dd7bd4b560548e2b9f74ae66006efc7d0e0b3b017251f755bbd8b601c
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • agenttesla

C2
  • https://api.telegram.org/bot5083863399:AAH9g72QTdN88jNOd6_tBrE8gEd-FpXnfHE/sendDocument

Signatures

  • AgentTesla

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

  • AgentTesla payload 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.

  • 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 WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4856aa91b3b25dc702acee5419906c0d.exe
    "C:\Users\Admin\AppData\Local\Temp\4856aa91b3b25dc702acee5419906c0d.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4348
    • C:\Users\Admin\AppData\Local\Temp\4856aa91b3b25dc702acee5419906c0d.exe
      "C:\Users\Admin\AppData\Local\Temp\4856aa91b3b25dc702acee5419906c0d.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:4984

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        4856aa91b3b25dc702acee5419906c0d.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\4856aa91b3b25dc702acee5419906c0d.exe.log
        • Size 1KB
        • SHA256 5923ff37c18eb6e68484a34f3ec7c46e96fa001b5ee631d1d36abc5aa5d06cb3
        • MD5 SHA1 SHA512

        memory/4348-139-0x0000000009C70000-0x0000000009D0C000-memory.dmp

        memory/4348-135-0x0000000005940000-0x00000000059D2000-memory.dmp

        memory/4348-136-0x0000000003400000-0x0000000003410000-memory.dmp

        memory/4348-137-0x0000000005920000-0x000000000592A000-memory.dmp

        memory/4348-138-0x0000000003400000-0x0000000003410000-memory.dmp

        memory/4348-133-0x0000000000E20000-0x0000000000EEC000-memory.dmp

        memory/4348-134-0x0000000006030000-0x00000000065D4000-memory.dmp

        memory/4984-140-0x0000000000400000-0x000000000043C000-memory.dmp

        memory/4984-143-0x00000000053B0000-0x00000000053C0000-memory.dmp

        memory/4984-144-0x0000000005FC0000-0x0000000006026000-memory.dmp

        memory/4984-145-0x00000000053B0000-0x00000000053C0000-memory.dmp

        memory/4984-146-0x0000000006570000-0x00000000065C0000-memory.dmp