Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260629-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    03/07/2026, 04:35

General

  • Target
    libtcmalloc_minimal.dll
  • Size 32.3MB
  • Sample260703-e7znnabv4z
  • SHA256 760bfe0b357f2a8b7e2d871c0aebdc3b1748087444203e129c82da12a2543b06
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • UAC bypass 3 TTPs 6 IoCs
  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 4 IoCs
  • VMProtect packed file 27 IoCs

    Detects executables packed with VMProtect commercial packer.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 52 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs
  • System policy modification 1 TTPs 8 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\libtcmalloc_minimal.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5576
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\libtcmalloc_minimal.dll,#1
      2⤵
      • UAC bypass
      • Checks whether UAC is enabled
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:3052
      • C:\ProgramData\TPNK\tasnkd.exe
        C:\ProgramData\TPNK\tasnkd.exe
        3⤵
        • UAC bypass
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        • System policy modification
        PID:1864
        • \??\c:\lsasa.exe
          c:/lsasa.exe
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SetWindowsHookEx
          PID:5804
      • C:\ProgramData\TPNK\tasnkd.exe
        C:\ProgramData\TPNK\tasnkd.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1504
  • C:\ProgramData\KJQD\aappev\aappev.exe
    "C:\ProgramData\KJQD\aappev\aappev.exe"
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5976
    • \??\c:\lsasa.exe
      c:/lsasa.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      PID:5812
    • \??\c:\ProgramData\TPNK\tasnkd.exe
      c:/ProgramData/TPNK\tasnkd.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:5736
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:5256

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          aappev.exe

          • Path C:\ProgramData\KJQD\aappev\aappev.exe
          • Size 193KB
          • SHA256 d23373a73e086f2575cd5f994dc37d9af39757b48ea04d34b9ffe0b0b8dd4d5a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          VideoSdk.dll

          • Path C:\ProgramData\TPNK\VideoSdk.dll
          • Size 7.4MB
          • SHA256 0aa66c62d8af0501b615368e37bb09f3e1a7804a5a14e6c5e08379b52beec618
          • MD5 SHA1 SHA512 SSDEEP TLSH

          tasnkd.exe

          • Path C:\ProgramData\TPNK\tasnkd.exe
          • Size 113KB
          • SHA256 3258965d7f60f55493f783dd5b5bdd7575681ce8a76894ec72a09c94bdba135d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          jilu.inf

          • Path \??\c:\ProgramData\KZZ\jilu.inf
          • Size 1.1MB
          • SHA256 4af02385cd56384b4342f6a7366265027d77e69b4f38bf3faff86402290029ca
          • MD5 SHA1 SHA512 SSDEEP TLSH

          yy.inf

          • Path \??\c:\ProgramData\KZZ\yy.inf
          • Size 9.1MB
          • SHA256 7e7b30266a3605e4deb5041162b8ef235f6c8cf24c688f23f2706cad9ef4fe24
          • MD5 SHA1 SHA512 SSDEEP TLSH

          banben.ars

          • Path \??\c:\ProgramData\intsla\banben.ars
          • Size 6B
          • SHA256 704617e28c3a2905591097da1f878089f20f13d68b6a2262c5dcc9c13051fcd0
          • MD5 SHA1 SHA512

          bzwb.ars

          • Path \??\c:\ProgramData\intsla\bzwb.ars
          • Size 6B
          • SHA256 1ba550381991a2addf826a954ac02d906b6caef32ff81dd5e0614a65a60881fc
          • MD5 SHA1 SHA512

          ID.ars

          • Path \??\c:\ProgramData\intsla\dll\ID.ars
          • Size 6B
          • SHA256 3a4869d0df1b3d1e1a3507ca5d2e0619f8958a8fd6a2411432b8902c8cf8d915
          • MD5 SHA1 SHA512

          ncrl.ars

          • Path \??\c:\ProgramData\intsla\ncrl.ars
          • Size 5B
          • SHA256 0ab6a8f8fec07fefbe2773b481361e50d913e0ab1493bd228c98fb9951871094
          • MD5 SHA1 SHA512

          opkaiguan.txt

          • Path \??\c:\ProgramData\intsla\opkaiguan.txt
          • Size 1KB
          • SHA256 4c13d452dd5d49671bd93ca32f2b4f85c78e39b6ab0ad1f38d98ed267f8fd896
          • MD5 SHA1 SHA512 TLSH

          yingzi.ars

          • Path \??\c:\ProgramData\intsla\yingzi.ars
          • Size 8B
          • SHA256 4f5c6b6cd333e1ef3e832b8792959f61c63dfb87e3b94e3eda6400b00121e460
          • MD5 SHA1 SHA512

          yprl.ars

          • Path \??\c:\ProgramData\intsla\yprl.ars
          • Size 3B
          • SHA256 a665a45920422f9d417e4867efdc4fb8a04a1f3fff1fa07e998e86f7f7a27ae3
          • MD5 SHA1 SHA512

          memory/1504-40-0x0000000010000000-0x0000000010F55000-memory.dmp

          memory/1504-44-0x0000000010000000-0x0000000010F55000-memory.dmp

          memory/1504-32-0x0000000010000000-0x0000000010F55000-memory.dmp

          memory/1864-28-0x0000000010000000-0x0000000010F55000-memory.dmp

          memory/1864-27-0x0000000010000000-0x0000000010F55000-memory.dmp

          memory/1864-69-0x0000000010000000-0x0000000010F55000-memory.dmp

          memory/3052-53-0x0000000070C60000-0x0000000074D39000-memory.dmp

          memory/3052-1-0x0000000070C60000-0x0000000074D39000-memory.dmp

          memory/3052-0-0x0000000070C60000-0x0000000074D39000-memory.dmp

          memory/5736-78-0x0000000010000000-0x0000000010F55000-memory.dmp

          memory/5804-70-0x0000000000400000-0x0000000001A31000-memory.dmp

          memory/5804-85-0x0000000000400000-0x0000000001A31000-memory.dmp

          memory/5804-95-0x0000000000400000-0x0000000001A31000-memory.dmp

          memory/5804-94-0x0000000000400000-0x0000000001A31000-memory.dmp

          memory/5804-54-0x0000000010000000-0x0000000010386000-memory.dmp

          memory/5804-58-0x0000000010000000-0x0000000010386000-memory.dmp

          memory/5804-51-0x0000000000400000-0x0000000001A31000-memory.dmp

          memory/5804-83-0x0000000000400000-0x0000000001A31000-memory.dmp

          memory/5804-84-0x0000000000400000-0x0000000001A31000-memory.dmp

          memory/5804-68-0x0000000010000000-0x0000000010386000-memory.dmp

          memory/5804-86-0x0000000000400000-0x0000000001A31000-memory.dmp

          memory/5804-87-0x0000000000400000-0x0000000001A31000-memory.dmp

          memory/5804-90-0x0000000000400000-0x0000000001A31000-memory.dmp

          memory/5804-91-0x0000000000400000-0x0000000001A31000-memory.dmp

          memory/5804-92-0x0000000000400000-0x0000000001A31000-memory.dmp

          memory/5804-93-0x0000000000400000-0x0000000001A31000-memory.dmp

          memory/5812-74-0x0000000000400000-0x0000000001A31000-memory.dmp

          memory/5812-72-0x0000000000400000-0x0000000001A31000-memory.dmp