Overview

overview

10

Static

static

10

1/0178b79b...bd.exe

windows7-x64

8

1/0178b79b...bd.exe

windows10-2004-x64

10

1/0280cde4...60.exe

windows7-x64

10

1/0280cde4...60.exe

windows10-2004-x64

10

1/08b76206...65.exe

windows7-x64

10

1/08b76206...65.exe

windows10-2004-x64

10

1/0e4fc438...91.exe

windows7-x64

3

1/0e4fc438...91.exe

windows10-2004-x64

10

1/0fb86a8b...05.exe

windows7-x64

10

1/0fb86a8b...05.exe

windows10-2004-x64

10

1/25898c73...8f.exe

windows7-x64

10

1/25898c73...8f.exe

windows10-2004-x64

10

1/2c2e9491...3c.exe

windows7-x64

3

1/2c2e9491...3c.exe

windows10-2004-x64

10

1/2ef0f582...2e.exe

windows7-x64

3

1/2ef0f582...2e.exe

windows10-2004-x64

10

1/39884fc0...82.exe

windows7-x64

10

1/39884fc0...82.exe

windows10-2004-x64

10

1/3a72ecec...8a.exe

windows7-x64

10

1/3a72ecec...8a.exe

windows10-2004-x64

10

1/3bfcb4f7...71.exe

windows7-x64

10

1/3bfcb4f7...71.exe

windows10-2004-x64

10

1/4103411f...f5.exe

windows7-x64

10

1/4103411f...f5.exe

windows10-2004-x64

10

1/4e0fdb84...95.exe

windows7-x64

3

1/4e0fdb84...95.exe

windows10-2004-x64

7

1/5297372f...33.exe

windows7-x64

5

1/5297372f...33.exe

windows10-2004-x64

5

1/68292f38...e4.exe

windows7-x64

3

1/68292f38...e4.exe

windows10-2004-x64

10

1/6da4696b...e5.exe

windows7-x64

7

1/6da4696b...e5.exe

windows10-2004-x64

7

Analysis

  • max time kernel
    146s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240730-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-08-2024 12:36

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General

  • Target

    1/0fb86a8ba8fdf57990c283080a671c1320cbcdfd0e8b5f5a250d9c38a6fce305.exe

  • Size

    146KB

  • MD5

    2357ecbcf3b566c76c839daf7ecf2681

  • SHA1

    89d9b7c3eff0a15dc9dbbfe2163de7d5e9479f58

  • SHA256

    0fb86a8ba8fdf57990c283080a671c1320cbcdfd0e8b5f5a250d9c38a6fce305

  • SHA512

    bb5630ae44e684f2dfc74478c57bf97a94045501a64022d563e87f2a60d777307cab2b5a14e6764d25a2fd1f27901624c1ee76ca551d5a5e3a21abc4befef401

  • SSDEEP

    3072:V6glyuxE4GsUPnliByocWepo2NVLiguo/pyEwUS:V6gDBGpvEByocWeauV2gvzwU

Score
10/10
defense_evasiondiscoveryransomwarespywarestealer

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: 217B9D5D58C4AD3CAFAA9B2BF81B2136 >>>> 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 (640) files with added filename extension

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

    ransomware
  • 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.

    spywarestealer
  • Drops desktop.ini file(s) 2 IoCs
  • Indicator Removal: File Deletion 1 TTPs

    Adversaries may delete files left behind by the actions of their intrusion activity.

    defense_evasion
  • Drops file in System32 directory 4 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 2 IoCs
    ransomware
  • Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • 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
    evasion
  • 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
    • System Location Discovery: System Language Discovery
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4776
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
      • Drops file in System32 directory
      PID:3220
    • C:\ProgramData\B3FF.tmp
      "C:\ProgramData\B3FF.tmp"
      2⤵
      • Checks computer location settings
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:1068
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\B3FF.tmp >> NUL
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2408
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
    1⤵
      PID:4968
    • C:\Windows\system32\printfilterpipelinesvc.exe
      C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
      1⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:3524
      • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
        /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{E2F0BE68-523A-4D26-99B0-5BEFBD1F6EBD}.xps" 133670758308080000
        2⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of SetWindowsHookEx
        PID:2024

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\$Recycle.Bin\S-1-5-21-2951562807-3718269429-4208157415-1000\GGGGGGGGGGG
      Filesize

      129B

      MD5

      698e059303fe9949ad4d793a5b589dc3

      SHA1

      cd0221fca707f35927f95eaf9394554a5d682099

      SHA256

      b62d052e169c529941c12b1ca6fd343aebd5744d4e485538e539d7bccac3baf4

      SHA512

      bcb3057a3cc88b03f9cb75126f9983f7851dd98f4d96ffe985f90ffd0adfec7b05b0c537fe4ac4c0476838b9ca60a5bf8fe111d65eb784793fc1594140d80bc4

      Download Submit

    • C:\7V7uPExzv.README.txt
      Filesize

      1KB

      MD5

      b570b29954b8c0d99fcce4196b1f5468

      SHA1

      085eb3472769aed7613f7fab1b452e414a802085

      SHA256

      96d5031d7d978ff2f95064f238411228f2d4cc23a666fb960effbeb5849e999f

      SHA512

      c5cf2a48fc2e00f356eb3c24cb0a6e99905a2639aedaae0a566b163d109374fea3696b08fbe405ef4cec05361ac58e770a3dcb33c66f6d3fa62a60eb2c6836d6

      Download Submit

    • C:\ProgramData\B3FF.tmp
      Filesize

      14KB

      MD5

      294e9f64cb1642dd89229fff0592856b

      SHA1

      97b148c27f3da29ba7b18d6aee8a0db9102f47c9

      SHA256

      917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

      SHA512

      b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

      Download Submit

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

      146KB

      MD5

      574ce72297ceae58af356ce1a7ec20b1

      SHA1

      f4142e7cd5bb4f63bfbfc10878be027d685d3a91

      SHA256

      256fa037a8650bbea68ac1d946c724f728ae0757d3e367fa6b61d3ffaa543c61

      SHA512

      30b2e9df8f63dbb80d1e5db04364846425336b9ed3d50b752c310f9770aa71e6dda3bf480d12636708e2a598d42f1524d27aae043eefafe8ba3dc87a7137a5ad

      Download Submit

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

      4KB

      MD5

      88b5e7b73b0f932cbea10f1ff39bfaa0

      SHA1

      9624686591fd012f572ec381fee026a81d46a3ff

      SHA256

      c9c6219b131947694e89d7f4a352aaa1aecf3782c4edfb6c04505a97e8c329b8

      SHA512

      ac462bf40a733653682459fa82eb194ff2d84afc945175b99bc8115d170930395f202413e24d667d11130e21c9534858cd5a5e2df1e9f1e22f69c970819faaed

      Download Submit

    • F:\$RECYCLE.BIN\S-1-5-21-2951562807-3718269429-4208157415-1000\EEEEEEEEEEE
      Filesize

      129B

      MD5

      c104415bba72f1319ead611cc28dc340

      SHA1

      fdb0b4069f73a0b92cb54c8984f0634aaedb79ec

      SHA256

      f404dd52301f60b148358d17c83f7732d9069f1cd54a39a427aac9b744e04895

      SHA512

      b892c33a0f3e6ced88c3e80cab0f81ae6d13d0bf4a1a88eda663d47c034b3bf47bc39ac141f9e6f3e1de1d6e7dc81a403e6eecdd2bbb4a929152ba9b3ff406e2

      Download Submit

    • memory/2024-2860-0x00007FFDD1A90000-0x00007FFDD1AA0000-memory.dmp

      Filesize

      64KB

      Download

    • memory/2024-2861-0x00007FFDD1A90000-0x00007FFDD1AA0000-memory.dmp

      Filesize

      64KB

      Download

    • memory/2024-2859-0x00007FFDD1A90000-0x00007FFDD1AA0000-memory.dmp

      Filesize

      64KB

      Download

    • memory/2024-2862-0x00007FFDD1A90000-0x00007FFDD1AA0000-memory.dmp

      Filesize

      64KB

      Download

    • memory/2024-2858-0x00007FFDD1A90000-0x00007FFDD1AA0000-memory.dmp

      Filesize

      64KB

      Download

    • memory/2024-2891-0x00007FFDCF130000-0x00007FFDCF140000-memory.dmp

      Filesize

      64KB

      Download

    • memory/2024-2892-0x00007FFDCF130000-0x00007FFDCF140000-memory.dmp

      Filesize

      64KB

      Download

    • memory/4776-0-0x0000000000CC0000-0x0000000000CD0000-memory.dmp

      Filesize

      64KB

      Download

    • memory/4776-2-0x0000000000CC0000-0x0000000000CD0000-memory.dmp

      Filesize

      64KB

      Download

    • memory/4776-1-0x0000000000CC0000-0x0000000000CD0000-memory.dmp

      Filesize

      64KB

      Download