Analysis

  • custom tags

    oss_ak
  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    18/07/2026, 07:34

General

  • Target
    ebe335ce3c9574bd6f66d17be71f52172a3741d45ed99b0f3ed540e3c4847b57.exe
  • Size 1.9MB
  • Sample260718-jee6rsct9n
  • SHA256 ebe335ce3c9574bd6f66d17be71f52172a3741d45ed99b0f3ed540e3c4847b57
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • detect oss ak 24 IoCs

    oss ak information detected.

  • Downloads MZ/PE file 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • UPX packed file 64 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: RenamesItself 2 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ebe335ce3c9574bd6f66d17be71f52172a3741d45ed99b0f3ed540e3c4847b57.exe
    "C:\Users\Admin\AppData\Local\Temp\ebe335ce3c9574bd6f66d17be71f52172a3741d45ed99b0f3ed540e3c4847b57.exe"
    1⤵
    • Downloads MZ/PE file
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: RenamesItself
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4200
    • C:\Users\Admin\AppData\Local\Temp\ebe335ce3c9574bd6f66d17be71f52172a3741d45ed99b0f3ed540e3c4847b57.exe
      "C:\Users\Admin\AppData\Local\Temp\ebe335ce3c9574bd6f66d17be71f52172a3741d45ed99b0f3ed540e3c4847b57.exe" 4200
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Writes to the Master Boot Record (MBR)
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1376
      • C:\Users\Admin\AppData\Local\Temp\data\Bugreport-655678.dll
        C:\Users\Admin\AppData\Local\Temp\data\Bugreport-655678.dll Bugreport %E9%AA%A8%E5%A4%B4QQ%E7%A9%BA%E9%97%B4%E8%AE%BF%E5%AE%A2%E7%9B%91%E6%8E%A7%E6%8F%90%20
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:5648

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        Bugreport-655678.dll

        • Path C:\Users\Admin\AppData\Local\Temp\data\Bugreport-655678.dll
        • Size 83KB
        • SHA256 9595bd86f1cc5e7f6575a567b1e84e8bda5f89bbcd518619338ddb1f2c6bdd1f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Bugreport.ini

        • Path C:\Users\Admin\AppData\Local\Temp\data\Bugreport.ini
        • Size 113B
        • SHA256 fa4ac78b1d550d60fac13ab856944eaa3bfebd933a71545438093efcd83d2d22
        • MD5 SHA1 SHA512 TLSH

        ebe335ce3c9574bd6f66d17be71f52172a3741d45ed99b0f3ed540e3c4847b57.exe

        • Path C:\Users\Admin\AppData\Local\Temp\ebe335ce3c9574bd6f66d17be71f52172a3741d45ed99b0f3ed540e3c4847b57.exe
        • Size 1.9MB
        • SHA256 21dc3bbf769c1dd30512a8808220aa93fc0f8525fb24c2a63b085e5a20fe7015
        • MD5 SHA1 SHA512 SSDEEP TLSH

        iext1.fnr.bbs.125.la

        • Path C:\Users\Admin\AppData\Local\Temp\iext1.fnr.bbs.125.la
        • Size 724KB
        • SHA256 2e67ba278646fde95bb614dcbcc7da1c6bf7976c918b2c6ad3d78640000326f3
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1376-82-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/1376-106-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/1376-160-0x0000000000400000-0x00000000008BA200-memory.dmp

        memory/1376-159-0x0000000000400000-0x00000000008BA200-memory.dmp

        memory/1376-158-0x0000000000400000-0x00000000008BA200-memory.dmp

        memory/1376-157-0x0000000000400000-0x00000000008BA200-memory.dmp

        memory/1376-156-0x0000000000400000-0x00000000008BA200-memory.dmp

        memory/1376-155-0x0000000000400000-0x00000000008BA200-memory.dmp

        memory/1376-154-0x0000000000400000-0x00000000008BA200-memory.dmp

        memory/1376-153-0x0000000000400000-0x00000000008BA200-memory.dmp

        memory/1376-152-0x0000000000400000-0x00000000008BA200-memory.dmp

        memory/1376-124-0x0000000000400000-0x00000000008BA200-memory.dmp

        memory/1376-125-0x0000000000400000-0x00000000008BA200-memory.dmp

        memory/1376-79-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/1376-80-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/1376-94-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/1376-108-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/1376-77-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/1376-84-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/1376-86-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/1376-120-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/1376-88-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/1376-90-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/1376-92-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/1376-96-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/1376-98-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/1376-100-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/1376-102-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/1376-104-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/1376-118-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/1376-110-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/1376-123-0x0000000000400000-0x00000000008BA200-memory.dmp

        memory/1376-112-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/1376-114-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/1376-73-0x0000000000400000-0x00000000008BA200-memory.dmp

        memory/1376-116-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/1376-121-0x00000000039C0000-0x0000000003A32000-memory.dmp

        memory/1376-122-0x0000000000400000-0x00000000008BA200-memory.dmp

        memory/4200-17-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/4200-25-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/4200-51-0x0000000000400000-0x00000000008BA200-memory.dmp

        memory/4200-74-0x0000000000400000-0x00000000008BA200-memory.dmp

        memory/4200-49-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/4200-63-0x0000000000400000-0x00000000008BA200-memory.dmp

        memory/4200-60-0x0000000000400000-0x00000000008BA200-memory.dmp

        memory/4200-59-0x0000000000400000-0x00000000008BA200-memory.dmp

        memory/4200-58-0x0000000000400000-0x00000000008BA200-memory.dmp

        memory/4200-7-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/4200-8-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/4200-11-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/4200-23-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/4200-9-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/4200-13-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/4200-15-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/4200-19-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/4200-21-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/4200-0-0x0000000000400000-0x00000000008BA200-memory.dmp

        memory/4200-62-0x0000000000400000-0x00000000008BA200-memory.dmp

        memory/4200-27-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/4200-29-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/4200-31-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/4200-33-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/4200-35-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/4200-37-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/4200-46-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/4200-52-0x0000000000400000-0x00000000008BA200-memory.dmp

        memory/4200-1-0x00000000008B8000-0x00000000008B9000-memory.dmp

        memory/4200-53-0x0000000000400000-0x00000000008BA200-memory.dmp

        memory/4200-55-0x0000000000400000-0x00000000008BA200-memory.dmp

        memory/4200-39-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/4200-41-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/4200-44-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/4200-47-0x0000000010000000-0x000000001003F000-memory.dmp

        memory/4200-50-0x0000000003800000-0x0000000003872000-memory.dmp

        memory/4200-54-0x0000000000400000-0x00000000008BA200-memory.dmp

        memory/5648-150-0x0000000000400000-0x0000000000442200-memory.dmp

        memory/5648-135-0x0000000000400000-0x0000000000442200-memory.dmp