Analysis

  • max time kernel
    147s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/04/2024, 14:54

General

  • Target
    2024-04-08_d54bae930b038950c2947f5397c13f84_darkside.exe
  • Size 147KB
  • Sample240408-sadltabh77
  • SHA256 1250ba6f25fd60077f698a2617c15f89d58c1867339bfd9ee8ab19ce9943304b
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Path
  • C:\AoVOpni2N.README.txt

Ransom Note
  • Hello! Your files have been stolen from your network and encrypted with a strong algorithm. We work for money and are not associated with politics. All you need to do is contact us and pay. --- Our communication process: 1. You contact us. 2. We send you a list of files that were stolen. 3. We decrypt 1 file to confirm that our decryptor works. 4. We agree on the amount, which must be paid using BTC. 5. We delete your files, we give you a decryptor. 6. We give you a detailed report on how we compromised your company, and recommendations on how to avoid such situations in the future. --- Client area (use this site to contact us): Link for Tor Browser: http://3pktcrcbmssvrnwe5skburdwe2h3v6ibdnn5kbjqihsg6eu6s6b7ryqd.onion >>> Use this ID: A758919A7F3B351CC479E11840EDBFB2 to begin the recovery process. * In order to access the site, you will need Tor Browser, you can download it from this link: https://www.torproject.org/ --- Additional contacts: Support Tox: 1C054B722BCBF41A918EF3C485712742088F5C3E81B2FDD91ADEA6BA55F4A856D90A65E99D20 --- Recommendations: DO NOT RESET OR SHUTDOWN - files may be damaged. DO NOT RENAME OR MOVE the encrypted and readme files. DO NOT DELETE readme files. --- Important: If you refuse to pay or do not get in touch with us, we start publishing your files. 02/05/2024 00:00 UTC the decryptor will be destroyed and the files will be published on our blog. Blog: http://z3wqggtxft7id3ibr7srivv5gjof5fwg76slewnzwwakjuf3nlhukdid.onion Sincerely, 01000100 01110010 01100001 01100111 01101111 01101110 01000110 01101111 01110010 01100011 01100101
URLs
  • http://3pktcrcbmssvrnwe5skburdwe2h3v6ibdnn5kbjqihsg6eu6s6b7ryqd.onion

  • http://z3wqggtxft7id3ibr7srivv5gjof5fwg76slewnzwwakjuf3nlhukdid.onion

Signatures

  • 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
  • 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
  • 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\2024-04-08_d54bae930b038950c2947f5397c13f84_darkside.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-08_d54bae930b038950c2947f5397c13f84_darkside.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1708
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
      • Drops file in System32 directory
      PID:932
    • C:\ProgramData\E21F.tmp
      "C:\ProgramData\E21F.tmp"
      2⤵
      • Checks computer location settings
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:3952
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\E21F.tmp >> NUL
        3⤵
          PID:1212
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
      1⤵
        PID:1940
      • C:\Windows\system32\printfilterpipelinesvc.exe
        C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
        1⤵
        • Drops file in System32 directory
        • Suspicious use of WriteProcessMemory
        PID:436
        • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
          /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{5873C28C-8B28-4934-8C48-D26CC3A5528A}.xps" 133570618472960000
          2⤵
          • Checks processor information in registry
          • Enumerates system info in registry
          • Suspicious use of SetWindowsHookEx
          PID:816

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            desktop.ini

            • Path C:\$Recycle.Bin\S-1-5-21-609813121-2907144057-1731107329-1000\desktop.ini
            • Size 129B
            • SHA256 d705481f71efd74a95a6930471dc0f0c5fad8f28e9e81d301675ae912addf6a6
            • MD5 SHA1 SHA512

            AoVOpni2N.README.txt

            • Path C:\AoVOpni2N.README.txt
            • Size 1KB
            • SHA256 f56ebb24f2ef9bb5603d9864da8058d507a046b7264fd7d8912b98c8f4378e9f
            • MD5 SHA1 SHA512

            E21F.tmp

            • Path C:\ProgramData\E21F.tmp
            • Size 14KB
            • SHA256 917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2
            • MD5 SHA1 SHA512 SSDEEP

            DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD

            • Path C:\Users\Admin\AppData\Local\Temp\DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
            • Size 147KB
            • SHA256 d90477af8b0c875706c63bdc685dd491237b7ac24bc6353bedfb38b9f2ae3290
            • MD5 SHA1 SHA512 SSDEEP

            {D19F2FFB-5BFC-40CD-B0C0-5B2B0AC6B653}

            • Path C:\Users\Admin\AppData\Local\Temp\{D19F2FFB-5BFC-40CD-B0C0-5B2B0AC6B653}
            • Size 4KB
            • SHA256 ee8d3a70546f577d67b40b36744cdfc5eb7acad4e9b5236c00d259234cc4e055
            • MD5 SHA1 SHA512 SSDEEP

            Open Notebook.onetoc2

            • Path C:\Users\Admin\Documents\OneNote Notebooks\My Notebook\Open Notebook.onetoc2
            • Size 4KB
            • SHA256 d4860268db855c74713e8172e63da4737f01bb6863a3f4f0524a1cb05a61272a
            • MD5 SHA1 SHA512 SSDEEP

            DDDDDDDDDDD

            • Path F:\$RECYCLE.BIN\S-1-5-21-609813121-2907144057-1731107329-1000\DDDDDDDDDDD
            • Size 129B
            • SHA256 5c97ee481b383e2600c8eaaed4479000a17deb612b7f90ed66a1bc729841bb1d
            • MD5 SHA1 SHA512

            memory/816-2814-0x00007FFBF7850000-0x00007FFBF7A45000-memory.dmp

            memory/816-2817-0x00007FFBF7850000-0x00007FFBF7A45000-memory.dmp

            memory/816-2845-0x00007FFBF7850000-0x00007FFBF7A45000-memory.dmp

            memory/816-2771-0x00007FFBB78D0000-0x00007FFBB78E0000-memory.dmp

            memory/816-2773-0x00007FFBF7850000-0x00007FFBF7A45000-memory.dmp

            memory/816-2772-0x00007FFBB78D0000-0x00007FFBB78E0000-memory.dmp

            memory/816-2803-0x00007FFBF7850000-0x00007FFBF7A45000-memory.dmp

            memory/816-2844-0x00007FFBF7850000-0x00007FFBF7A45000-memory.dmp

            memory/816-2804-0x00007FFBB78D0000-0x00007FFBB78E0000-memory.dmp

            memory/816-2805-0x00007FFBF7850000-0x00007FFBF7A45000-memory.dmp

            memory/816-2807-0x00007FFBB78D0000-0x00007FFBB78E0000-memory.dmp

            memory/816-2822-0x00007FFBB5280000-0x00007FFBB5290000-memory.dmp

            memory/816-2821-0x00007FFBF7850000-0x00007FFBF7A45000-memory.dmp

            memory/816-2774-0x00007FFBB78D0000-0x00007FFBB78E0000-memory.dmp

            memory/816-2819-0x00007FFBB5280000-0x00007FFBB5290000-memory.dmp

            memory/816-2816-0x00007FFBF7850000-0x00007FFBF7A45000-memory.dmp

            memory/816-2815-0x00007FFBF7850000-0x00007FFBF7A45000-memory.dmp

            memory/816-2812-0x00007FFBF7850000-0x00007FFBF7A45000-memory.dmp

            memory/816-2813-0x00007FFBF7850000-0x00007FFBF7A45000-memory.dmp

            memory/1708-2-0x0000000000D10000-0x0000000000D20000-memory.dmp

            memory/1708-0-0x0000000000D10000-0x0000000000D20000-memory.dmp

            memory/1708-2756-0x0000000000D10000-0x0000000000D20000-memory.dmp

            memory/1708-1-0x0000000000D10000-0x0000000000D20000-memory.dmp

            memory/1708-2755-0x0000000000D10000-0x0000000000D20000-memory.dmp

            memory/1708-2754-0x0000000000D10000-0x0000000000D20000-memory.dmp

            memory/3952-2810-0x000000007FE20000-0x000000007FE21000-memory.dmp

            memory/3952-2818-0x000000007FDE0000-0x000000007FDE1000-memory.dmp

            memory/3952-2820-0x000000007FE00000-0x000000007FE01000-memory.dmp

            memory/3952-2809-0x0000000000570000-0x0000000000580000-memory.dmp

            memory/3952-2806-0x000000007FE40000-0x000000007FE41000-memory.dmp

            memory/3952-2808-0x0000000000570000-0x0000000000580000-memory.dmp

            memory/3952-2811-0x000000007FDC0000-0x000000007FDC1000-memory.dmp