Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260617-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260617-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    29/06/2026, 09:51

General

  • Target
    b481b6034d399f7f85877662838d4cd461a8ef5ae694b2cd44fcd9614b8842fc.exe
  • Size 224KB
  • Sample260629-lvyddsct2l
  • SHA256 b481b6034d399f7f85877662838d4cd461a8ef5ae694b2cd44fcd9614b8842fc
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • agenttesla

Credentials
  • Protocol

    ftp

  • Host

    ftp://ftp.holzbrenzii.com

  • Port

    21

  • Password

    boygirl123456

Signatures

  • Family: AgentTesla

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

  • Family: Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Loads dropped DLL 1 IoCs
  • 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 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • outlook_office_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b481b6034d399f7f85877662838d4cd461a8ef5ae694b2cd44fcd9614b8842fc.exe
    "C:\Users\Admin\AppData\Local\Temp\b481b6034d399f7f85877662838d4cd461a8ef5ae694b2cd44fcd9614b8842fc.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1068
    • C:\Users\Admin\AppData\Local\Temp\b481b6034d399f7f85877662838d4cd461a8ef5ae694b2cd44fcd9614b8842fc.exe
      "C:\Users\Admin\AppData\Local\Temp\b481b6034d399f7f85877662838d4cd461a8ef5ae694b2cd44fcd9614b8842fc.exe"
      2⤵
        PID:2600
      • C:\Users\Admin\AppData\Local\Temp\b481b6034d399f7f85877662838d4cd461a8ef5ae694b2cd44fcd9614b8842fc.exe
        "C:\Users\Admin\AppData\Local\Temp\b481b6034d399f7f85877662838d4cd461a8ef5ae694b2cd44fcd9614b8842fc.exe"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Suspicious use of NtCreateThreadExHideFromDebugger
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        • outlook_office_path
        PID:2608
        • C:\Users\Admin\AppData\Local\Temp\b481b6034d399f7f85877662838d4cd461a8ef5ae694b2cd44fcd9614b8842fc.exe
          "C:\Users\Admin\AppData\Local\Temp\b481b6034d399f7f85877662838d4cd461a8ef5ae694b2cd44fcd9614b8842fc.exe"
          3⤵
            PID:4892

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            System.dll

            • Path C:\Users\Admin\AppData\Local\Temp\nsp676C.tmp\System.dll
            • Size 12KB
            • SHA256 acf90ab6f4edc687e94aaf604d05e16e6cfb5e35873783b50c66f307a35c6506
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/1068-16-0x0000000006010000-0x0000000008A80000-memory.dmp

            memory/1068-17-0x0000000074365000-0x0000000074366000-memory.dmp

            memory/2608-18-0x0000000001750000-0x00000000041C0000-memory.dmp

            memory/2608-19-0x0000000000460000-0x0000000001746000-memory.dmp

            memory/2608-20-0x0000000000460000-0x00000000004A2000-memory.dmp

            memory/2608-21-0x00000000373F0000-0x00000000379AA000-memory.dmp

            memory/2608-22-0x00000000379B0000-0x0000000037A16000-memory.dmp

            memory/2608-24-0x0000000001750000-0x00000000041C0000-memory.dmp

            memory/2608-27-0x0000000038320000-0x0000000038370000-memory.dmp

            memory/2608-28-0x0000000038370000-0x0000000038402000-memory.dmp

            memory/2608-29-0x0000000038460000-0x000000003846A000-memory.dmp