Analysis

  • max time kernel
    300s
  • max time network
    131s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    20/10/2026, 16:12

General

  • Target
    Teklif İsteme-20102026 PDF.js
  • Size 4.9MB
  • Sample261020-tnt2dsssfs
  • SHA256 3ee9c523c560bde7032938a697254ec08890aadd5a95ef1cf4b9322614bdfdba
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • vipkeylogger

Credentials
C2
  • https://api.telegram.org/bot8099843793:AAGeYKMLti1IpyT9o6bz7OtgdXF9md25uXA/sendMessage?chat_id=6337180137

Signatures

  • Family: DonutLoader

    DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.

  • Family: VIPKeylogger

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

  • Detects DonutLoader 2 IoCs
  • Executes dropped EXE 1 IoCs
  • 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
  • Looks up external IP address via web service 1 TTPs 11 IoCs

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

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Command and Scripting Interpreter: JavaScript 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 1 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • Modifies registry class 2 IoCs
  • NTFS ADS 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe "C:\Users\Admin\AppData\Local\Temp\Teklif İsteme-20102026 PDF.js"
    1⤵
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1464
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c echo. > "C:\Users\Admin\AppData\Local\Temp\Teklif İsteme-20102026 PDF.js:Zone.Identifier"
      2⤵
      • Executes a command shell one-liner
      • NTFS ADS
      PID:2640
    • C:\Users\Admin\Documents\BOBPDPGRSKCFBXTW.exe
      "C:\Users\Admin\Documents\BOBPDPGRSKCFBXTW.exe" C:\Users\Admin\Documents\WTXBFCKSRGPDPBOB
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Accesses Microsoft Outlook profiles
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1224

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        BOBPDPGRSKCFBXTW.exe

        • Path C:\Users\Admin\Documents\BOBPDPGRSKCFBXTW.exe
        • Size 31KB
        • SHA256 f5163ecb12e440d916b028faa34758a971f2396f12118ca0b40bdaead1108767
        • MD5 SHA1 SHA512 SSDEEP TLSH

        VCRUNTIME140.dll

        • Path C:\Users\Admin\Documents\VCRUNTIME140.dll
        • Size 120KB
        • SHA256 184146852727a9db4eea06178716bec3cdbb1015c911f6b0f915b184ad7775b2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        WTXBFCKSRGPDPBOB

        • Path C:\Users\Admin\Documents\WTXBFCKSRGPDPBOB
        • Size 767KB
        • SHA256 238c89ea4af4389fd85440801381907b0a4b19e94ba3e82fcc067ce5fab24156
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libluajit.dll

        • Path C:\Users\Admin\Documents\libluajit.dll
        • Size 441KB
        • SHA256 6b53c5c6890c47de35244d5fba9c33501caa9e4fe2590699ef343d272064f710
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1224-18-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-17-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-19-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-20-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-21-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-24-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-25-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-29-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-28-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-27-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-23-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-22-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-26-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-31-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-30-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-32-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-36-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-37-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-35-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-34-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-33-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-45-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-52-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-51-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-54-0x0000021788500000-0x000002178854B000-memory.dmp

        memory/1224-53-0x0000021788500000-0x0000021789500000-memory.dmp

        memory/1224-50-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-49-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-48-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-47-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-44-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-43-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-42-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-55-0x00007FFC471BF000-0x00007FFC471C0000-memory.dmp

        memory/1224-41-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-40-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-39-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-46-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-38-0x00007FFC52FE0000-0x00007FFC52FF0000-memory.dmp

        memory/1224-56-0x00007FFC47030000-0x00007FFC479D4000-memory.dmp

        memory/1224-58-0x0000021788410000-0x0000021788458000-memory.dmp

        memory/1224-57-0x00007FFC47030000-0x00007FFC479D4000-memory.dmp

        memory/1224-59-0x00007FFC47030000-0x00007FFC479D4000-memory.dmp

        memory/1224-60-0x00007FFC47030000-0x00007FFC479D4000-memory.dmp

        memory/1224-61-0x00007FFC47030000-0x00007FFC479D4000-memory.dmp

        memory/1224-62-0x00007FFC47030000-0x00007FFC479D4000-memory.dmp

        memory/1224-63-0x00007FFC47030000-0x00007FFC479D4000-memory.dmp

        memory/1224-64-0x00007FFC47030000-0x00007FFC479D4000-memory.dmp

        memory/1224-65-0x00007FFC47030000-0x00007FFC479D4000-memory.dmp

        memory/1224-66-0x00007FFC47030000-0x00007FFC479D4000-memory.dmp

        memory/1224-67-0x00000217B30C0000-0x00000217B3282000-memory.dmp

        memory/1224-68-0x000002179A4E0000-0x000002179A530000-memory.dmp

        memory/1224-69-0x00007FFC47030000-0x00007FFC479D4000-memory.dmp