Analysis

  • max time kernel
    148s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/04/2024, 17:28

General

  • Target
    2024-04-01_b3aec12271efa6c26cec1261d4de714f_darkside.exe
  • Size 147KB
  • Sample240401-v1798aae6v
  • SHA256 3fdddf46645490c316d9d9383a9de5c783bbec96ea935c35db2dbe6cb13a95a2
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Path
  • C:\Wn0VuO1lW.README.txt

Ransom Note
  • >>>> Your files are encrypted! Your personal ID 5s03wCLP Your personal KEY c1d991ff997064e96293ebe011d57a6b WHAT HAPPENED! All your files have been encrypted due a security problem with your pc. If you to restore them, write us to the e-mail: e-mail: [email protected] [email protected] [email protected] Write this ID in the title of your message: - You have to pay for decryption in Monero. The price depends on how fast you write us. After payment we will send you the decryption tool that will decrypt all your files. FREE DECRYPTION AS GUARANTEE! Before paying you can send us up to 3 file for free decryption. The total size of file must be less than 10Mb(non archived), and file should not contain valuable information.(databases, backups, large excel sheets, etc.) HOW TO OBTAIN Monero! The easiest way to buy Monero is agoradesk site. You have to register, click Buy Monero and select the seller by payment method and price https://localmonero.co/buy-monero Also you can find places to buy Monero and beginners guide here: https://localmonero.co/how-to-buy-monero Attention! Do not rename encrypted files Do not try to decrypt your data using third party software, it may cause permanent data loss If you not write on e-mail in 36 hours - your key has been deleted and you cant decrypt your files
URLs
  • https://localmonero.co/buy-monero

  • https://localmonero.co/how-to-buy-monero

Signatures

  • Renames multiple (600) files with added filename extension

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Drops desktop.ini file(s) 2 IoCs
  • Drops file in System32 directory 4 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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
  • 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 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-01_b3aec12271efa6c26cec1261d4de714f_darkside.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-01_b3aec12271efa6c26cec1261d4de714f_darkside.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Sets desktop wallpaper using registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4268
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
      • Drops file in System32 directory
      PID:348
    • C:\ProgramData\62CD.tmp
      "C:\ProgramData\62CD.tmp"
      2⤵
      • Checks computer location settings
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:1216
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\62CD.tmp >> NUL
        3⤵
          PID:3664
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
      1⤵
        PID:2600
      • C:\Windows\system32\printfilterpipelinesvc.exe
        C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
        1⤵
        • Drops file in System32 directory
        • Suspicious use of WriteProcessMemory
        PID:4076
        • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
          /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{2EAB7C28-3BB2-4755-ABA1-04094EA911E0}.xps" 133564661691380000
          2⤵
          • Checks processor information in registry
          • Enumerates system info in registry
          • Suspicious use of SetWindowsHookEx
          PID:5028

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            AAAAAAAAAAA

            • Path C:\$Recycle.Bin\S-1-5-21-609813121-2907144057-1731107329-1000\AAAAAAAAAAA
            • Size 129B
            • SHA256 4c3e8ee4099292fd3f4916ad9e6f07976704b208e9d4c0d1593b709e98ea6930
            • MD5 SHA1 SHA512

            62CD.tmp

            • Path C:\ProgramData\62CD.tmp
            • Size 14KB
            • SHA256 917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2
            • MD5 SHA1 SHA512 SSDEEP

            DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD

            • Path C:\Users\Admin\AppData\Local\Temp\DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
            • Size 147KB
            • SHA256 5460ecb598218b82198c15a69c1e5c416b813c9eb68e9e9c243554c9d03194cf
            • MD5 SHA1 SHA512 SSDEEP

            {F83BB2D1-7B16-4E03-B467-9BD76BD1A1DF}

            • Path C:\Users\Admin\AppData\Local\Temp\{F83BB2D1-7B16-4E03-B467-9BD76BD1A1DF}
            • Size 4KB
            • SHA256 b88f7a1415a8eccf57481170b02350736e8029bb4c0b61093465ea4ded961ea6
            • MD5 SHA1 SHA512 SSDEEP

            Open Notebook.onetoc2

            • Path C:\Users\Admin\Documents\OneNote Notebooks\My Notebook\Open Notebook.onetoc2
            • Size 4KB
            • SHA256 520d880ed2ada84e2fd533445c42e179ec78da9d887ef19029dcfa3ed03b8cda
            • MD5 SHA1 SHA512 SSDEEP

            Wn0VuO1lW.README.txt

            • Path C:\Wn0VuO1lW.README.txt
            • Size 1KB
            • SHA256 c2b9cbcba704ba2cd5fb636ee945d327299bc3915088fcf6d73b74e756c7e8c9
            • MD5 SHA1 SHA512

            DDDDDDDDDDD

            • Path F:\$RECYCLE.BIN\S-1-5-21-609813121-2907144057-1731107329-1000\DDDDDDDDDDD
            • Size 129B
            • SHA256 602699e2bff9f104c2ddfa4390d0067bdaa1ed26b6335fba056a2dce334068c1
            • MD5 SHA1 SHA512

            memory/4268-2737-0x0000000000FE0000-0x0000000000FF0000-memory.dmp

            memory/4268-2738-0x0000000000FE0000-0x0000000000FF0000-memory.dmp

            memory/4268-2739-0x0000000000FE0000-0x0000000000FF0000-memory.dmp

            memory/4268-2-0x0000000000FE0000-0x0000000000FF0000-memory.dmp

            memory/4268-1-0x0000000000FE0000-0x0000000000FF0000-memory.dmp

            memory/4268-0-0x0000000000FE0000-0x0000000000FF0000-memory.dmp

            memory/5028-2754-0x00007FFAFF170000-0x00007FFAFF180000-memory.dmp

            memory/5028-2799-0x00007FFAFD110000-0x00007FFAFD120000-memory.dmp

            memory/5028-2790-0x00007FFB3F0F0000-0x00007FFB3F2E5000-memory.dmp

            memory/5028-2789-0x00007FFAFF170000-0x00007FFAFF180000-memory.dmp

            memory/5028-2757-0x00007FFB3F0F0000-0x00007FFB3F2E5000-memory.dmp

            memory/5028-2759-0x00007FFB3F0F0000-0x00007FFB3F2E5000-memory.dmp

            memory/5028-2791-0x00007FFB3F0F0000-0x00007FFB3F2E5000-memory.dmp

            memory/5028-2793-0x00007FFB3F0F0000-0x00007FFB3F2E5000-memory.dmp

            memory/5028-2794-0x00007FFAFD110000-0x00007FFAFD120000-memory.dmp

            memory/5028-2796-0x00007FFB3F0F0000-0x00007FFB3F2E5000-memory.dmp

            memory/5028-2797-0x00007FFB3F0F0000-0x00007FFB3F2E5000-memory.dmp

            memory/5028-2795-0x00007FFB3F0F0000-0x00007FFB3F2E5000-memory.dmp

            memory/5028-2792-0x00007FFB3F0F0000-0x00007FFB3F2E5000-memory.dmp

            memory/5028-2760-0x00007FFAFF170000-0x00007FFAFF180000-memory.dmp

            memory/5028-2798-0x00007FFB3F0F0000-0x00007FFB3F2E5000-memory.dmp

            memory/5028-2800-0x00007FFB3F0F0000-0x00007FFB3F2E5000-memory.dmp

            memory/5028-2801-0x00007FFB3F0F0000-0x00007FFB3F2E5000-memory.dmp

            memory/5028-2802-0x00007FFB3F0F0000-0x00007FFB3F2E5000-memory.dmp

            memory/5028-2803-0x00007FFB3F0F0000-0x00007FFB3F2E5000-memory.dmp

            memory/5028-2804-0x00007FFB3F0F0000-0x00007FFB3F2E5000-memory.dmp

            memory/5028-2805-0x00007FFB3F0F0000-0x00007FFB3F2E5000-memory.dmp

            memory/5028-2806-0x00007FFB3F0F0000-0x00007FFB3F2E5000-memory.dmp

            memory/5028-2758-0x00007FFAFF170000-0x00007FFAFF180000-memory.dmp

            memory/5028-2752-0x00007FFAFF170000-0x00007FFAFF180000-memory.dmp

            memory/5028-2828-0x00007FFB3F0F0000-0x00007FFB3F2E5000-memory.dmp

            memory/5028-2829-0x00007FFB3F0F0000-0x00007FFB3F2E5000-memory.dmp