Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    09/03/2026, 08:51

General

  • Target
    Fatura.exe
  • Size 664KB
  • Sample260309-kr9ftacs7j
  • SHA256 c301f73e763173ccfec4bef1df2f9ea35e5d483cded5bc6d87813bb0df53d1c8
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Credentials
  • Protocol

    smtp

  • Host

    webmail.intecsa.pe

  • Port

    587

  • Password

    Intecsa!23

Extracted

Family
  • vipkeylogger

Credentials

Signatures

  • VIPKeylogger

    VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.

  • Vipkeylogger family
  • Loads dropped DLL 2 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 3 IoCs
  • Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs

    Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

  • Looks up external IP address via web service 3 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
  • Drops file in Program Files directory 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • 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
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Fatura.exe
    "C:\Users\Admin\AppData\Local\Temp\Fatura.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:4772
    • C:\Users\Admin\AppData\Local\Temp\Fatura.exe
      "C:\Users\Admin\AppData\Local\Temp\Fatura.exe"
      2⤵
        PID:5588
      • C:\Users\Admin\AppData\Local\Temp\Fatura.exe
        "C:\Users\Admin\AppData\Local\Temp\Fatura.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
        • outlook_win_path
        PID:5412
        • C:\Users\Admin\AppData\Local\Temp\Fatura.exe
          "C:\Users\Admin\AppData\Local\Temp\Fatura.exe"
          3⤵
            PID:1092

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            System.dll

            • Path C:\Users\Admin\AppData\Local\Temp\nsu778D.tmp\System.dll
            • Size 12KB
            • SHA256 3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/4772-37-0x0000000074B55000-0x0000000074B56000-memory.dmp

            memory/4772-38-0x0000000000A00000-0x0000000000A7C000-memory.dmp

            memory/5412-39-0x0000000077E48000-0x0000000077E49000-memory.dmp

            memory/5412-40-0x0000000077EDB000-0x0000000077EDC000-memory.dmp

            memory/5412-41-0x0000000077E5B000-0x0000000077E5C000-memory.dmp

            memory/5412-57-0x0000000077DB1000-0x0000000077ED3000-memory.dmp

            memory/5412-56-0x0000000000490000-0x00000000017A7000-memory.dmp

            memory/5412-58-0x0000000000490000-0x00000000004DA000-memory.dmp

            memory/5412-59-0x0000000039AE0000-0x000000003A086000-memory.dmp

            memory/5412-60-0x00000000376F0000-0x000000003778C000-memory.dmp

            memory/5412-61-0x0000000039970000-0x0000000039980000-memory.dmp

            memory/5412-63-0x0000000006AD0000-0x0000000006B4C000-memory.dmp

            memory/5412-64-0x0000000077EDB000-0x0000000077EDC000-memory.dmp

            memory/5412-65-0x000000003A3E0000-0x000000003A5A2000-memory.dmp

            memory/5412-66-0x000000003A5B0000-0x000000003A600000-memory.dmp

            memory/5412-67-0x000000003A780000-0x000000003ACAC000-memory.dmp

            memory/5412-68-0x0000000039970000-0x0000000039980000-memory.dmp

            memory/5412-70-0x0000000006AD0000-0x0000000006B4C000-memory.dmp

            memory/5412-73-0x000000003AD10000-0x000000003ADA2000-memory.dmp

            memory/5412-74-0x000000003AE00000-0x000000003AE0A000-memory.dmp