Analysis

  • max time kernel
    146s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/03/2023, 16:58

General

  • Target
    PO-3-07-23.exe
  • Size 901KB
  • Sample230308-vgtbysfa5t
  • SHA256 c0cbab8b9504e2575456d0f902b264123362665031999a3f780c2a5c2f0b9512
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 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\PO-3-07-23.exe
    "C:\Users\Admin\AppData\Local\Temp\PO-3-07-23.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4364
    • C:\Users\Admin\AppData\Local\Temp\PO-3-07-23.exe
      "C:\Users\Admin\AppData\Local\Temp\PO-3-07-23.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:2116

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        PO-3-07-23.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\PO-3-07-23.exe.log
        • Size 1KB
        • SHA256 7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
        • MD5 SHA1 SHA512

        memory/2116-140-0x0000000000400000-0x0000000000430000-memory.dmp

        memory/2116-147-0x0000000005720000-0x0000000005730000-memory.dmp

        memory/2116-146-0x00000000076C0000-0x0000000007882000-memory.dmp

        memory/2116-145-0x00000000074A0000-0x00000000074F0000-memory.dmp

        memory/2116-144-0x0000000005720000-0x0000000005730000-memory.dmp

        memory/2116-143-0x00000000057A0000-0x0000000005806000-memory.dmp

        memory/4364-136-0x0000000005A70000-0x0000000005A7A000-memory.dmp

        memory/4364-139-0x00000000086A0000-0x000000000873C000-memory.dmp

        memory/4364-138-0x0000000005A10000-0x0000000005A20000-memory.dmp

        memory/4364-137-0x0000000005A10000-0x0000000005A20000-memory.dmp

        memory/4364-133-0x0000000000FC0000-0x00000000010A8000-memory.dmp

        memory/4364-135-0x0000000005AA0000-0x0000000005B32000-memory.dmp

        memory/4364-134-0x0000000005FB0000-0x0000000006554000-memory.dmp