Resubmissions

14-07-2024 13:00

240714-p8n9es1elq 10

14-07-2024 13:00

240714-p8metstdra 10

18-06-2024 22:58

240618-2xvnaasglk 10

Analysis

  • max time kernel
    129s
  • max time network
    146s
  • platform
    windows10-1703_x64
  • resource
    win10-20240611-en
  • resource tags

    arch:x64arch:x86image:win10-20240611-enlocale:en-usos:windows10-1703-x64system
  • submitted
    14-07-2024 13:00

General

  • Target

    LB3.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: 217B9D5D58C4AD3C3C6DD01A3B647A5C >>>> 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 (449) files with added filename extension

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

  • 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
  • Drops file in Windows directory 1 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 31 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\LB3.exe
    "C:\Users\Admin\AppData\Local\Temp\LB3.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:1980
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
      • Drops file in System32 directory
      PID:5052
    • C:\ProgramData\4552.tmp
      "C:\ProgramData\4552.tmp"
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:4184
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\4552.tmp >> NUL
        3⤵
          PID:1608
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k appmodel -s tiledatamodelsvc
      1⤵
      • Drops file in Windows directory
      PID:3244
    • C:\Windows\system32\printfilterpipelinesvc.exe
      C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
      1⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:4864
      • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
        /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{7D34C04E-FAAC-4787-8492-8BAD35CAE458}.xps" 133654356371960000
        2⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of SetWindowsHookEx
        PID:3696

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\$Recycle.Bin\S-1-5-21-1453213197-474736321-1741884505-1000\GGGGGGGGGGG

      Filesize

      129B

      MD5

      dc9d933c61a6ee4941d32b4814f04b2e

      SHA1

      534d2196252176fded7f31cd944ff6810bc7ac97

      SHA256

      992b53e2cbdc1c87a78d3ad6cebff6f9a15a5eba309b817628c4d23a110259ae

      SHA512

      08d4bab2332bbb1a7bb75100ba4045c318678231501806c1d8cfcb85f260b290c688850ca1ebbbe8a70a1082c29ed7336756d3c2beddbbdff99a4f8e23fd2688

    • C:\7V7uPExzv.README.txt

      Filesize

      1KB

      MD5

      30618f75669d5ceef4f20f2780f10441

      SHA1

      b8aa275a06540da228856653537e15d998811572

      SHA256

      622aa25dee50c2290c5d90598e6cc25d1ebb53f1626d071221a8d41628a24a1b

      SHA512

      4404385be54eae578c9de4bab2c346058331cd1d2948226d286e08703156d23dd6b7173570a30aa5ba99da6c6f549fb84ad4fd612b9c3d2b4e1e3749d1aed87c

    • C:\ProgramData\4552.tmp

      Filesize

      14KB

      MD5

      294e9f64cb1642dd89229fff0592856b

      SHA1

      97b148c27f3da29ba7b18d6aee8a0db9102f47c9

      SHA256

      917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

      SHA512

      b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

    • C:\Users\Admin\AppData\Local\Temp\CCCCCCC

      Filesize

      146KB

      MD5

      ab63387378a2811a5b0330194a8c0dde

      SHA1

      c36696ba2c0188031801667271981dce758aecff

      SHA256

      b21612c3ae9e935c183523f5abfab676666329024c96babd4eed8420f2a1166f

      SHA512

      ccb2e395fcdcf292347c29272108847084ec28d7bdda5e912cd22dd79ffad67771661e3309fa6d30f877702e524411fe9041c27ff063dca268388730b66fbe9a

    • C:\Users\Admin\AppData\Local\Temp\{3A5B3AF9-90DA-4125-91B3-B0DD4B7C5C21}

      Filesize

      4KB

      MD5

      2101fab32ebe95163f99ac2ce30ac777

      SHA1

      f538f0b0314b43be1eba293ead9e84aa6c6e86d3

      SHA256

      27737f66bb0fa21328889fe40a74f052b60c9a6af91dd6242ea94587dbdf737f

      SHA512

      aadb3ecd0e05615ffa219813f96797a9accd617c08734e83f995f7ec2d1ceea9de51b7c5aaecfe172fb52774b5364f19c3a0ba86b2a7a4c9fd24735def4e4d1a

    • C:\Users\Admin\Documents\OneNote Notebooks\My Notebook\Open Notebook.onetoc2

      Filesize

      4KB

      MD5

      1cb2c64bbdfcfa0f9951f2b05635265b

      SHA1

      e8746ce26a2f3ee74df62b7a1a010991f05a311a

      SHA256

      593b995cb2dcd1588c75df01793109d2e0c3fea7cebe4a57b36913b1d133a3d7

      SHA512

      e379160c730f79bf69a36a044b50c96ca861363554520d6f2d99116d7bb38d203b4bed84de523d705d8484a64825748e743e1938f0e1368a91fffcdcefa902aa

    • F:\$RECYCLE.BIN\S-1-5-21-1453213197-474736321-1741884505-1000\DDDDDDDDDDD

      Filesize

      129B

      MD5

      bd09012c114608bd26780a279b7df253

      SHA1

      e264a47302b6578ab88422a71918580031dd08b7

      SHA256

      c7c31698b0d292323aa5b6b5f7a0c22712a3e19a77596bf53383cdc7e8b11cfa

      SHA512

      36f3eed2dc80f1f9786c9aa26fcfa99aa5cd6ef8fcf8b5b2e4001702b1c401f7da6d83f7b74d33f05bc9c0a292fa8dd5fb5693cbc5bd6b8317b64239d70e74f5

    • memory/1980-1-0x0000000002CB0000-0x0000000002CC0000-memory.dmp

      Filesize

      64KB

    • memory/1980-0-0x0000000002CB0000-0x0000000002CC0000-memory.dmp

      Filesize

      64KB

    • memory/1980-2553-0x0000000002CB0000-0x0000000002CC0000-memory.dmp

      Filesize

      64KB

    • memory/1980-2-0x0000000002CB0000-0x0000000002CC0000-memory.dmp

      Filesize

      64KB

    • memory/1980-2552-0x0000000002CB0000-0x0000000002CC0000-memory.dmp

      Filesize

      64KB

    • memory/1980-2554-0x0000000002CB0000-0x0000000002CC0000-memory.dmp

      Filesize

      64KB

    • memory/3244-2183-0x0000024AAE5B0000-0x0000024AAE5C0000-memory.dmp

      Filesize

      64KB

    • memory/3244-2309-0x0000024AB2DD0000-0x0000024AB2DD1000-memory.dmp

      Filesize

      4KB

    • memory/3244-2271-0x0000024AB2DB0000-0x0000024AB2DB1000-memory.dmp

      Filesize

      4KB

    • memory/3244-2254-0x0000024AB2C70000-0x0000024AB2C71000-memory.dmp

      Filesize

      4KB

    • memory/3244-2228-0x0000024AB2BF0000-0x0000024AB2BF1000-memory.dmp

      Filesize

      4KB

    • memory/3244-2178-0x0000024AAE560000-0x0000024AAE570000-memory.dmp

      Filesize

      64KB

    • memory/3696-2570-0x00007FF8C9650000-0x00007FF8C9660000-memory.dmp

      Filesize

      64KB

    • memory/3696-2572-0x00007FF8C9650000-0x00007FF8C9660000-memory.dmp

      Filesize

      64KB

    • memory/3696-2571-0x00007FF8C9650000-0x00007FF8C9660000-memory.dmp

      Filesize

      64KB

    • memory/3696-2573-0x00007FF8C9650000-0x00007FF8C9660000-memory.dmp

      Filesize

      64KB

    • memory/3696-2604-0x00007FF8C5B40000-0x00007FF8C5B50000-memory.dmp

      Filesize

      64KB

    • memory/3696-2605-0x00007FF8C5B40000-0x00007FF8C5B50000-memory.dmp

      Filesize

      64KB