Resubmissions

08/09/2026, 15:38

260908-s27nzagd93

15/08/2026, 21:05

260815-zw6ytat1ez

15/08/2026, 20:50

260815-zmxnsatzgs

15/08/2026, 20:46

260815-zkklfatcnf

15/08/2026, 20:40

260815-zf5e2stcjb

15/08/2026, 20:39

260815-zfqlwstydz

14/08/2026, 18:03

260814-wm9fssyyev

06/08/2026, 22:09

260806-124lbabl4s

06/08/2026, 03:52

260806-efejeaxzax

04/08/2026, 06:18

260804-g2rf7ssgqf

Analysis

  • max time kernel
    598s
  • max time network
    434s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    25/05/2026, 14:51

General

  • Target
    Red-Flaged/Jigsaw.exe
  • Size 283KB
  • Sample260525-r7719aex91
  • SHA256 3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Jigsaw Ransomware

    Ransomware family first created in 2016. Named based on wallpaper set after infection in the early versions.

  • Renames multiple (1719) files with added filename extension

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

  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • ConfuserEx .NET packer 1 IoCs

    Detects ConfuserEx .NET packer.

  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Red-Flaged\Jigsaw.exe
    "C:\Users\Admin\AppData\Local\Temp\Red-Flaged\Jigsaw.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:5928
    • C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
      "C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\Red-Flaged\Jigsaw.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      PID:5968
  • C:\Users\Admin\AppData\Roaming\Frfx\firefox.exe
    C:\Users\Admin\AppData\Roaming\Frfx\firefox.exe
    1⤵
    • Executes dropped EXE
    • Adds Run key to start application
    • Drops file in Program Files directory
    PID:5772

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        DisplayLanguageNames.en_US_POSIX.txt.fun

        • Path C:\Program Files (x86)\Common Files\Adobe\Reader\DC\Linguistics\LanguageNames2\DisplayLanguageNames.en_US_POSIX.txt.fun
        • Size 32KB
        • SHA256 a193ee2673e0ba5ebc5ea6e65665b8a28bd7611f06d2b0174ec2076e22d94356
        • MD5 SHA1 SHA512 SSDEEP TLSH

        invalid32x32.gif.fun

        • Path C:\Program Files\Java\jdk-1.8\jre\lib\images\cursors\invalid32x32.gif.fun
        • Size 160B
        • SHA256 98b6c2ddfefc628d03ceaef9d69688674a6bc32eb707f9ed86bc8c75675c4513
        • MD5 SHA1 SHA512 TLSH

        drpbx.exe

        • Path C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
        • Size 283KB
        • SHA256 3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7
        • MD5 SHA1 SHA512 SSDEEP TLSH

        winword.exe.db.fun

        • Path C:\Users\Admin\AppData\Local\Microsoft\Office\OTele\winword.exe.db.fun
        • Size 24KB
        • SHA256 bc609f10cc4c74f113d734255d67183435d274f7734a5738234f2b7b18b11603
        • MD5 SHA1 SHA512 SSDEEP TLSH

        settings.dat.fun

        • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.AccountsControl_cw5n1h2txyewy\Settings\settings.dat.fun
        • Size 8KB
        • SHA256 36537e56d60910ab6aa548e64ca4adafdcabde9d60739013993e12ba061dfd65
        • MD5 SHA1 SHA512 SSDEEP TLSH

        BroadcastMsg_1778729716.txt.fun

        • Path C:\Users\Admin\AppData\Local\Temp\BroadcastMsg_1778729716.txt.fun
        • Size 16B
        • SHA256 619e246fc0ac11320ff9e322a979948d949494b0c18217f4d794e1b398818880
        • MD5 SHA1 SHA512

        memory/5772-24-0x000000001B260000-0x000000001B268000-memory.dmp

        memory/5772-25-0x00007FFED1D00000-0x00007FFED26A1000-memory.dmp

        memory/5772-267-0x00007FFED1D00000-0x00007FFED26A1000-memory.dmp

        memory/5928-4-0x000000001C2F0000-0x000000001C7BE000-memory.dmp

        memory/5928-0-0x00007FFED1FB5000-0x00007FFED1FB6000-memory.dmp

        memory/5928-20-0x00007FFED1D00000-0x00007FFED26A1000-memory.dmp

        memory/5928-5-0x000000001D200000-0x000000001D29C000-memory.dmp

        memory/5928-9-0x00007FFED1D00000-0x00007FFED26A1000-memory.dmp

        memory/5928-3-0x00007FFED1D00000-0x00007FFED26A1000-memory.dmp

        memory/5928-2-0x00000000016F0000-0x0000000001728000-memory.dmp

        memory/5928-1-0x00007FFED1D00000-0x00007FFED26A1000-memory.dmp

        memory/5968-21-0x00007FFED1D00000-0x00007FFED26A1000-memory.dmp

        memory/5968-26-0x00007FFED1D00000-0x00007FFED26A1000-memory.dmp

        memory/5968-266-0x00007FFED1D00000-0x00007FFED26A1000-memory.dmp