Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15-07-2024 08:50

General

  • Target

    1/0fb86a8ba8fdf57990c283080a671c1320cbcdfd0e8b5f5a250d9c38a6fce305.exe

  • Size

    146KB

  • MD5

    2357ecbcf3b566c76c839daf7ecf2681

  • SHA1

    89d9b7c3eff0a15dc9dbbfe2163de7d5e9479f58

  • SHA256

    0fb86a8ba8fdf57990c283080a671c1320cbcdfd0e8b5f5a250d9c38a6fce305

  • SHA512

    bb5630ae44e684f2dfc74478c57bf97a94045501a64022d563e87f2a60d777307cab2b5a14e6764d25a2fd1f27901624c1ee76ca551d5a5e3a21abc4befef401

  • SSDEEP

    3072:V6glyuxE4GsUPnliByocWepo2NVLiguo/pyEwUS:V6gDBGpvEByocWeauV2gvzwU

Malware Config

Extracted

Path

C:\7V7uPExzv.README.txt

Ransom Note
~~~NULLBULGE LOCK - BASED ON LOCKBIT~~~ >>>> Your data is encrypted... but dont freak out If we encrypted you, you majorly fucked up. But... all can be saved But not for free, we require an xmr payment >>>> What guarantees that we will not deceive you? We are not a politically motivated group and we do not need anything other than your money. If you pay, we will provide you the programs for decryption. Life is too short to be sad. Dont be sad money is only paper. Your files are more important than paper right? If we do not give you decrypter then nobody will pay us in the future. To us, our reputation is very important. There is no dissatisfied victim after payment. >>>> You may contact us and decrypt one file for free on these TOR sites with your personal DECRYPTION ID Download and install TOR Browser https://www.torproject.org/ Write to a chat and wait for the answer, we will always answer you. Sometimes you will need to wait a while Links for Tor Browser: http://nullblgtk7dwzpfklgktzll27ovvnj7pvqkoprmhubnnb32qcbmcpgid.onion/ Link for the normal browser http://group.goocasino.org https://nullbulge.com >>>> Your personal DECRYPTION ID: 217B9D5D58C4AD3C40383329533FA430 >>>> Warning! Do not DELETE or MODIFY any files, it can lead to recovery problems!
URLs

http://nullblgtk7dwzpfklgktzll27ovvnj7pvqkoprmhubnnb32qcbmcpgid.onion/

http://group.goocasino.org

https://nullbulge.com

Signatures

  • Renames multiple (632) 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\1\0fb86a8ba8fdf57990c283080a671c1320cbcdfd0e8b5f5a250d9c38a6fce305.exe
    "C:\Users\Admin\AppData\Local\Temp\1\0fb86a8ba8fdf57990c283080a671c1320cbcdfd0e8b5f5a250d9c38a6fce305.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:3120
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
      • Drops file in System32 directory
      PID:744
    • C:\ProgramData\F54E.tmp
      "C:\ProgramData\F54E.tmp"
      2⤵
      • Checks computer location settings
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:4068
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\F54E.tmp >> NUL
        3⤵
          PID:4860
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
      1⤵
        PID:532
      • C:\Windows\system32\printfilterpipelinesvc.exe
        C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
        1⤵
        • Drops file in System32 directory
        • Suspicious use of WriteProcessMemory
        PID:1060
        • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
          /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{4F9EAF82-9D0F-4E32-BD27-A83499C6188C}.xps" 133655070433920000
          2⤵
          • Checks processor information in registry
          • Enumerates system info in registry
          • Suspicious use of SetWindowsHookEx
          PID:3564

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\$Recycle.Bin\S-1-5-21-2990742725-2267136959-192470804-1000\EEEEEEEEEEE

        Filesize

        129B

        MD5

        67f9fc522504eee6c01bda45c0664725

        SHA1

        7c5d262337a20963961fc6b5742d237c3d23e2db

        SHA256

        9694dea905f076e756d8931a778bb808b025b7e55566d99c65152f79a0cb523d

        SHA512

        b15c0a64d1535b35357af2fd6cf0699771ab32d6b1bdf52b192eed9c6aa73f01d1b2c69aaad2c1a6fe929e8038347e9b9728244e6308fcd2d0fbc67009f1bdd1

      • C:\7V7uPExzv.README.txt

        Filesize

        1KB

        MD5

        69ed4e3823d264505a40442f5c2b96be

        SHA1

        ec9072de99ecb0e47fbf2b07ca512480c1620543

        SHA256

        e138c6794c54c5574086a7018d8a4890e2decafea3ac02d5aa76ce41bf41aa1a

        SHA512

        370191b02ff7dfede9ad74ffe24c5268f09913521516b9786701ea69bdd15cc7da6f12b7dea5d7245807a3c47c7d5bdf8211d30c859092482eaa1d8437032655

      • C:\ProgramData\F54E.tmp

        Filesize

        14KB

        MD5

        294e9f64cb1642dd89229fff0592856b

        SHA1

        97b148c27f3da29ba7b18d6aee8a0db9102f47c9

        SHA256

        917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

        SHA512

        b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

      • C:\Users\Admin\AppData\Local\Temp\1\DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD

        Filesize

        146KB

        MD5

        5306fe597d77d1e2c922fe6348041614

        SHA1

        634946f375d30cbf0578560a1179d667b300656e

        SHA256

        851399e34d75fa51c910880424ccad72cd3eea1e97581ca4a5460a3fbb830a4b

        SHA512

        c89ede9765becef07ee89aec124b4f601dc587e8560e475fdd7e288d21ffa5e1d777c4799d055df674d60dfe480f94be1207ef8e378821a532e163bff7387429

      • C:\Users\Admin\AppData\Local\Temp\{AA901F92-AE04-45C2-8BEF-03AE50243E64}

        Filesize

        4KB

        MD5

        129f99ae0b2c66f5f86fe20a6194df6f

        SHA1

        f9d300b9c32e0f956366519b636bf810d68105c3

        SHA256

        2b37eccc74e2097676a0c676725073094d14fa074fec77927d3cca7e2e12eeab

        SHA512

        22db3c9ec209e3de46241504679261e41c663ee15754a1318a9e83143246da088d4c11d6cbbd496078972775abb8b8d474f2ad26820d50adb9e165b7b01b0b0b

      • F:\$RECYCLE.BIN\S-1-5-21-2990742725-2267136959-192470804-1000\DDDDDDDDDDD

        Filesize

        129B

        MD5

        e0401cd5315da83b7d75092fd8e7357b

        SHA1

        fad5aafa53fd44b1c3caa1b420819dc845cefca9

        SHA256

        dc50f5d406299dd4e0772591fe10c4244a86ef7132f4444320c8f0799ef59853

        SHA512

        1b089c9a21cf8faf9e02d7c0d003eeff19c5b2970da2606fbdde65a2265b8a787d3fd64f27e771b48238be9f99819f18359137ead0e3d5794c6f12dade8a8ce3

      • memory/3120-1-0x0000000002AB0000-0x0000000002AC0000-memory.dmp

        Filesize

        64KB

      • memory/3120-2-0x0000000002AB0000-0x0000000002AC0000-memory.dmp

        Filesize

        64KB

      • memory/3120-0-0x0000000002AB0000-0x0000000002AC0000-memory.dmp

        Filesize

        64KB

      • memory/3564-2990-0x00007FF91A6D0000-0x00007FF91A6E0000-memory.dmp

        Filesize

        64KB

      • memory/3564-2992-0x00007FF91A6D0000-0x00007FF91A6E0000-memory.dmp

        Filesize

        64KB

      • memory/3564-2994-0x00007FF91A6D0000-0x00007FF91A6E0000-memory.dmp

        Filesize

        64KB

      • memory/3564-2993-0x00007FF91A6D0000-0x00007FF91A6E0000-memory.dmp

        Filesize

        64KB

      • memory/3564-2995-0x00007FF91A6D0000-0x00007FF91A6E0000-memory.dmp

        Filesize

        64KB

      • memory/3564-3027-0x00007FF918670000-0x00007FF918680000-memory.dmp

        Filesize

        64KB

      • memory/3564-3028-0x00007FF918670000-0x00007FF918680000-memory.dmp

        Filesize

        64KB