Analysis

  • user interaction
    yes
  • max time kernel
    149s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    23/10/2026, 20:13

General

  • Target
    $PLUGINSDIR/System.dll
  • Size 12KB
  • Sample261023-yzs1padw4y
  • SHA256 23d618a0293c78ce00f7c6e6dd8b8923621da7dd1f63a070163ef4c0ec3033d6
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
5/10

Malware Config

Signatures

  • Drops file in System32 directory 11 IoCs
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

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

  • Checks SCSI registry key(s) 3 TTPs 36 IoCs

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

  • Modifies registry class 16 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4368
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3736
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3736 -s 612
        3⤵
        • Program crash
        PID:540
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3736 -ip 3736
    1⤵
      PID:4436
    • C:\Windows\system32\mspaint.exe
      "C:\Windows\system32\mspaint.exe" "C:\Users\Admin\Desktop\WriteGroup.png" /ForceBootstrapPaint3D
      1⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:1864
    • C:\Windows\System32\svchost.exe
      C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s DsSvc
      1⤵
      • Drops file in System32 directory
      PID:3744
    • C:\Program Files\WindowsApps\Microsoft.MSPaint_6.1907.29027.0_x64__8wekyb3d8bbwe\PaintStudio.View.exe
      "C:\Program Files\WindowsApps\Microsoft.MSPaint_6.1907.29027.0_x64__8wekyb3d8bbwe\PaintStudio.View.exe"
      1⤵
      • Checks SCSI registry key(s)
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:3896

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          Projects.json.~tmp

          • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.MSPaint_8wekyb3d8bbwe\LocalState\Projects\Projects.json.~tmp
          • Size 2B
          • SHA256 4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
          • MD5 SHA1 SHA512

          Projects.json.~tmp

          • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.MSPaint_8wekyb3d8bbwe\LocalState\Projects\Projects.json.~tmp
          • Size 238B
          • SHA256 e256cb05797237b5cfa76656802aa5b27f4d2b920e160488f1621ee3e76c6a69
          • MD5 SHA1 SHA512 TLSH

          Projects.json.~tmp

          • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.MSPaint_8wekyb3d8bbwe\LocalState\Projects\Projects.json.~tmp
          • Size 236B
          • SHA256 e046d76e159a91c989181f011d59bf74d7bb6c0b5654637c9e717ace9f88b148
          • MD5 SHA1 SHA512 TLSH

          Canvas_2.bin

          • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.MSPaint_8wekyb3d8bbwe\LocalState\Projects\WorkingFolder\Canvas_2.bin
          • Size 316B
          • SHA256 1cfbd4bed6424fe2c6cd694950fdf3d1a5a984a7736b018604adad6933079374
          • MD5 SHA1 SHA512 TLSH

          Canvas_4.bin

          • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.MSPaint_8wekyb3d8bbwe\LocalState\Projects\WorkingFolder\Canvas_4.bin
          • Size 387B
          • SHA256 04879008e8e65a1f5509f8fe750e782af4bf43282b786e5ee2bddd27b38ae6cc
          • MD5 SHA1 SHA512 TLSH

          Canvas_6.bin

          • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.MSPaint_8wekyb3d8bbwe\LocalState\Projects\WorkingFolder\Canvas_6.bin
          • Size 185B
          • SHA256 283c098bcb06ac393da46675c4ed8a05c1f434f63f3b921b91f5e891306ddf66
          • MD5 SHA1 SHA512 TLSH

          cloudCommunitySettings.json.~tmp

          • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.MSPaint_8wekyb3d8bbwe\LocalState\cloudCommunitySettings.json.~tmp
          • Size 2KB
          • SHA256 52bfb22aa2d7b0ce083d312fb8fa8dcda3063207186f99fc259aebd9064cbedc
          • MD5 SHA1 SHA512 TLSH

          DSS.log

          • Path C:\Windows\System32\config\systemprofile\AppData\Local\DataSharing\Storage\DSS.log
          • Size 64KB
          • SHA256 6d5e31f2ef3c34d1f6d7555093f6ef3ad78e01582c235e1020860441aa9dbfe2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/3744-14-0x0000015343640000-0x0000015343641000-memory.dmp

          memory/3744-19-0x00000153436E0000-0x00000153436E1000-memory.dmp

          memory/3744-22-0x00000153436E0000-0x00000153436E1000-memory.dmp

          memory/3744-18-0x00000153436D0000-0x00000153436D1000-memory.dmp

          memory/3744-17-0x00000153436D0000-0x00000153436D1000-memory.dmp

          memory/3744-16-0x0000015343640000-0x0000015343641000-memory.dmp

          memory/3744-0-0x0000015332930000-0x0000015332940000-memory.dmp

          memory/3744-12-0x00000153435C0000-0x00000153435C1000-memory.dmp

          memory/3744-4-0x0000015332970000-0x0000015332980000-memory.dmp

          memory/3896-106-0x0000016C18000000-0x0000016C195E2000-memory.dmp