Overview

overview

10

Static

static

10

_f016df16d...4a.exe

windows10-2004-x64

9

_f016df16d...4a.exe

windows11-21h2-x64

9

Analysis

  • max time kernel
    149s
  • max time network
    139s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    29/05/2026, 12:36

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General

  • Target
    _f016df16d0f34aaae36bf10e0ca6bccdce2a4d552fcc6444e6f48318ef0b2c4a.exe
  • Size 146KB
  • Sample260529-ps571abx71
  • SHA256 f016df16d0f34aaae36bf10e0ca6bccdce2a4d552fcc6444e6f48318ef0b2c4a
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
defense_evasiondiscoveryransomwarespywarestealer

Malware Config

Signatures

  • Renames multiple (832) files with added filename extension

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

    ransomware
  • Deletes itself 1 IoCs
  • 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 5 IoCs
  • 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.

    discovery
  • 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 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: RenamesItself 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 13 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\_f016df16d0f34aaae36bf10e0ca6bccdce2a4d552fcc6444e6f48318ef0b2c4a.exe
    "C:\Users\Admin\AppData\Local\Temp\_f016df16d0f34aaae36bf10e0ca6bccdce2a4d552fcc6444e6f48318ef0b2c4a.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Enumerates connected drives
    • Sets desktop wallpaper using registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2992
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
      • Drops file in System32 directory
      PID:4320
    • C:\ProgramData\5FDF.tmp
      "C:\ProgramData\5FDF.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:2472
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\5FDF.tmp >> NUL
        3⤵
        • System Location Discovery: System Language Discovery
        PID:5164
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
    1⤵
      PID:4576
    • C:\Windows\system32\printfilterpipelinesvc.exe
      C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
      1⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:3492
      • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
        /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{DF86FA9E-F642-470D-BB9F-A48748FD3073}.xps" 134245318029350000
        2⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of SetWindowsHookEx
        PID:4844

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          GGGGGGGGGGG
          • Path C:\$Recycle.Bin\S-1-5-21-2409539145-3342400454-2096821238-1000\GGGGGGGGGGG
          • Size 129B
          • SHA256 cc5c8c4604e792adf40aad5a124094d359f7ea2b1497d836f3f6a59c044f2cf3
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          5OcGFr3Kj.README.txt
          • Path C:\5OcGFr3Kj.README.txt
          • Size 427B
          • SHA256 29a544b27712da1f10bbf00378e7ccfd0ba5fdef465e221512cb9733ed31ff60
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          5FDF.tmp
          • Path C:\ProgramData\5FDF.tmp
          • Size 14KB
          • SHA256 917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
          • Path C:\Users\Admin\AppData\Local\Temp\DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
          • Size 146KB
          • SHA256 e0a8311156a825d97aafe99e5c5fb25bf10a478768bfa93289dc9a8166261ea7
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          Open Notebook.onetoc2
          • Path C:\Users\Admin\Documents\OneNote Notebooks\My Notebook\Open Notebook.onetoc2
          • Size 4KB
          • SHA256 630fac023ad716316508a294deb72d23e813d21a0aa322f0aa6724651b5409e0
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          FFFFFFFFFFF
          • Path F:\$RECYCLE.BIN\S-1-5-21-2409539145-3342400454-2096821238-1000\FFFFFFFFFFF
          • Size 129B
          • SHA256 c57a9d977ab63fb47b26e4c83eb4ec1efd468a5eefbfd6fa0bd020460423e516
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          memory/2992-3770-0x00000000030C0000-0x00000000030D0000-memory.dmp
          Download

          memory/2992-3769-0x00000000030C0000-0x00000000030D0000-memory.dmp
          Download

          memory/2992-0-0x00000000030C0000-0x00000000030D0000-memory.dmp
          Download

          memory/2992-3768-0x00000000030C0000-0x00000000030D0000-memory.dmp
          Download

          memory/2992-2-0x00000000030C0000-0x00000000030D0000-memory.dmp
          Download

          memory/2992-1-0x00000000030C0000-0x00000000030D0000-memory.dmp
          Download

          memory/4844-3782-0x00007FF898A50000-0x00007FF898A60000-memory.dmp
          Download

          memory/4844-3781-0x00007FF898A50000-0x00007FF898A60000-memory.dmp
          Download

          memory/4844-3780-0x00007FF898A50000-0x00007FF898A60000-memory.dmp
          Download

          memory/4844-3783-0x00007FF898A50000-0x00007FF898A60000-memory.dmp
          Download

          memory/4844-3779-0x00007FF898A50000-0x00007FF898A60000-memory.dmp
          Download

          memory/4844-3815-0x00007FF896490000-0x00007FF8964A0000-memory.dmp
          Download

          memory/4844-3816-0x00007FF896490000-0x00007FF8964A0000-memory.dmp
          Download