Overview

overview

10

Static

static

10

8f87c47d2c...44.exe

windows11-ltsc_2024-x64

9

Analysis

  • user interaction
    yes
  • max time kernel
    149s
  • max time network
    147s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    01/11/2026, 15:05

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General

  • Target
    8f87c47d2cd49eb5d0cc2dbcedf9822c74dcb8e87670ed3f1ec9f5a0d0a74844.exe
  • Size 147KB
  • Sample261101-sf8n5sbs8s
  • SHA256 8f87c47d2cd49eb5d0cc2dbcedf9822c74dcb8e87670ed3f1ec9f5a0d0a74844
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
defense_evasiondiscoveryransomwarespywarestealer

Malware Config

Signatures

  • Renames multiple (531) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    ransomware
  • Deletes itself 1 TTPs 1 IoCs
    defense_evasion
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

    spywarestealer
  • Drops desktop.ini file(s) 2 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Indicator Removal: File Deletion 1 TTPs

    Adversaries may delete files left behind by the actions of their intrusion activity.

    defense_evasion
  • Drops file in System32 directory 4 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 2 IoCs
    ransomware
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 TTPs 1 IoCs
    defense_evasion
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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.

    discovery
  • 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.

    discovery
  • Checks SCSI registry key(s) 3 TTPs 24 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies Control Panel 2 IoCs
    defense_evasion
  • Modifies registry class 7 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
    ransomware
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious behavior: RenamesItself 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 17 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8f87c47d2cd49eb5d0cc2dbcedf9822c74dcb8e87670ed3f1ec9f5a0d0a74844.exe
    "C:\Users\Admin\AppData\Local\Temp\8f87c47d2cd49eb5d0cc2dbcedf9822c74dcb8e87670ed3f1ec9f5a0d0a74844.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Enumerates connected drives
    • Sets desktop wallpaper using registry
    • Reads the TCP/IP host and domain name from the registry
    • System Location Discovery: System Language Discovery
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2604
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
      • Drops file in System32 directory
      • Checks SCSI registry key(s)
      PID:9788
    • C:\ProgramData\4C14.tmp
      "C:\ProgramData\4C14.tmp"
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:6736
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\4C14.tmp >> NUL
        3⤵
        • System Location Discovery: System Language Discovery
        PID:7852
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
    1⤵
      PID:9840
    • C:\Windows\system32\printfilterpipelinesvc.exe
      C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
      1⤵
      • Drops file in System32 directory
      • Drops file in Windows directory
      • Checks SCSI registry key(s)
      • Suspicious use of WriteProcessMemory
      PID:9980
      • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
        /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{431C2031-9029-46E6-B446-A1AC29F0FAAB}.xps" 134380191428390000
        2⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of SetWindowsHookEx
        PID:6372
    • C:\Windows\system32\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\Gq1CCpPbK.README.txt
      1⤵
      • Modifies registry class
      • Opens file in notepad (likely ransom note)
      PID:10068
    • C:\Windows\system32\OpenWith.exe
      C:\Windows\system32\OpenWith.exe -Embedding
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:4580

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          desktop.ini
          • Path C:\$Recycle.Bin\S-1-5-21-650287814-2715975232-1279715623-1000\desktop.ini
          • Size 129B
          • SHA256 bb8b5a46867a734b2e4879dbc332348a8d07883d3757201efc4a314413e1fc1b
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          Gq1CCpPbK.README.txt
          • Path C:\Gq1CCpPbK.README.txt
          • Size 1KB
          • SHA256 0bca7b7196e727a7155525b00f6c72438845831132c949d7fab0c67555eec88d
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          4C14.tmp
          • Path C:\ProgramData\4C14.tmp
          • Size 14KB
          • SHA256 917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          {431C2031-9029-46E6-B446-A1AC29F0FAAB}.xps
          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{431C2031-9029-46E6-B446-A1AC29F0FAAB}.xps
          • Size 13.0MB
          • SHA256 2300f19a0089b2c32bd3fdc5bc793e7c46a4228fcde66d3fdf7ed26e09a112f5
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB
          • Path C:\Users\Admin\AppData\Local\Temp\BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB
          • Size 147KB
          • SHA256 daa85251f1ff4da135498ff844ebe3c651e4f628f8a85564b2d5db6c3c7a6ee9
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          {7787B18B-DC87-4C53-8A8C-E21A376E3587}
          • Path C:\Users\Admin\AppData\Local\Temp\{7787B18B-DC87-4C53-8A8C-E21A376E3587}
          • Size 4KB
          • SHA256 18259164b88c0f845034015876983906f973ae0591b02cc6a075849850194e88
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          CUSTOM.DIC
          • Path C:\Users\Admin\AppData\Roaming\Microsoft\UProof\CUSTOM.DIC
          • Size 16B
          • SHA256 a91a702aab9b8dd722843d3d208a21bcfa6556dfc64e2ded63975de4511eb866
          • MD5 SHA1 SHA512
          Submit Download

          ExcludeDictionaryEN0409.lex
          • Path C:\Users\Admin\AppData\Roaming\Microsoft\UProof\ExcludeDictionaryEN0409.lex
          • Size 2B
          • SHA256 b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
          • MD5 SHA1 SHA512
          Submit Download

          Open Notebook.onetoc2
          • Path C:\Users\Admin\Documents\OneNote Notebooks\My Notebook\Open Notebook.onetoc2
          • Size 4KB
          • SHA256 62028ac1e50f390ff58665238cf94a808fb0e98c3c21ef93dfa7fdff895f747c
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          CompleteStep.wmv.Gq1CCpPbK
          • Path C:\Users\Admin\Downloads\CompleteStep.wmv.Gq1CCpPbK
          • Size 598KB
          • SHA256 120e345a10ae55e6a9bd00af0876581f4c0744325c944f9ab273b5411d0a499e
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          CompressReceive.tif.Gq1CCpPbK
          • Path C:\Users\Admin\Downloads\CompressReceive.tif.Gq1CCpPbK
          • Size 416KB
          • SHA256 ffbbfc798a3d4a4eb81dd79662f488dbd34acce187096d7bf90304995088e2b6
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          DisableCheckpoint.vsd.Gq1CCpPbK
          • Path C:\Users\Admin\Downloads\DisableCheckpoint.vsd.Gq1CCpPbK
          • Size 442KB
          • SHA256 fab0779b679212f881c990f32ff1ce087df67b628355eb14b3e8f1c032d49519
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          BBBBBBBBBBB
          • Path F:\$RECYCLE.BIN\S-1-5-21-650287814-2715975232-1279715623-1000\BBBBBBBBBBB
          • Size 129B
          • SHA256 9d3772b3333f238325e91bc305984eddf69f320b1389374c49e79a7fe8a06328
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          memory/2604-1564-0x00000000029C0000-0x00000000029D0000-memory.dmp
          Download

          memory/2604-2-0x00000000029C0000-0x00000000029D0000-memory.dmp
          Download

          memory/2604-0-0x00000000029C0000-0x00000000029D0000-memory.dmp
          Download

          memory/2604-1-0x00000000029C0000-0x00000000029D0000-memory.dmp
          Download

          memory/2604-1563-0x00000000029C0000-0x00000000029D0000-memory.dmp
          Download

          memory/6372-1575-0x00007FFFAA9A0000-0x00007FFFAA9B0000-memory.dmp
          Download

          memory/6372-1637-0x00007FFFA86B0000-0x00007FFFA86C0000-memory.dmp
          Download

          memory/6372-1636-0x00007FFFA86B0000-0x00007FFFA86C0000-memory.dmp
          Download

          memory/6372-1576-0x00007FFFAA9A0000-0x00007FFFAA9B0000-memory.dmp
          Download

          memory/6372-1581-0x00007FFFAA9A0000-0x00007FFFAA9B0000-memory.dmp
          Download

          memory/6372-1577-0x00007FFFAA9A0000-0x00007FFFAA9B0000-memory.dmp
          Download

          memory/6372-1578-0x00007FFFAA9A0000-0x00007FFFAA9B0000-memory.dmp
          Download

          memory/6372-1748-0x00007FFFAA9A0000-0x00007FFFAA9B0000-memory.dmp
          Download

          memory/6372-1747-0x00007FFFAA9A0000-0x00007FFFAA9B0000-memory.dmp
          Download

          memory/6372-1746-0x00007FFFAA9A0000-0x00007FFFAA9B0000-memory.dmp
          Download

          memory/6372-1745-0x00007FFFAA9A0000-0x00007FFFAA9B0000-memory.dmp
          Download