Analysis

  • max time kernel
    118s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    14-03-2024 04:22

General

  • Target

    cea3e8a3e541ae4c928c3cd33f6772f1a69746393ac1a5c4575379a09a92d1e1.exe

  • Size

    148KB

  • MD5

    a7637dfb6b9408fe020d9333d0ade6dc

  • SHA1

    930c34743ab12c80512723db0aa7b8b4762fcc84

  • SHA256

    cea3e8a3e541ae4c928c3cd33f6772f1a69746393ac1a5c4575379a09a92d1e1

  • SHA512

    a522e3be00f3c32cd318cca7995e0f6f604a0590de3f4c2830920347328d405d178bdd2c2406e3b835cc5e5037e2d2348456b138878644231af94e51fc4b4e94

  • SSDEEP

    3072:ym0ROZIL87L1yoklfzGp3XjRaDyZYMqqD/A+lHlC:ypMCL8rpHjRa0qqD/NjC

Malware Config

Extracted

Path

C:\Program Files\DVD Maker\es-ES\Restore-My-Files.txt

Family

lockbit

Ransom Note
All your important files are encrypted! Any attempts to restore your files with the thrid-party software will be fatal for your files! RESTORE YOU DATA POSIBLE ONLY BUYING private key from us. There is only one way to get your files back: 1) Through a standard browser(FireFox, Chrome, Edge, Opera) | 1. Open link http://lockbit-decryptor.com/?BD61F8CA9173670AD93315626837E5B3 | 2. Follow the instructions on this page 2) Through a Tor Browser - recommended | 1. Download Tor browser - https://www.torproject.org/ and install it. | 2. Open link in TOR browser - http://lockbitks2tvnmwk.onion/?BD61F8CA9173670AD93315626837E5B3 This link only works in Tor Browser! | 3. Follow the instructions on this page ### Attention! ### # lockbit-decryptor.com may be blocked. We recommend using a Tor browser to access the site # Do not rename encrypted files. # Do not try to decrypt using third party software, it may cause permanent data loss. # Decryption of your files with the help of third parties may cause increased price(they add their fee to our). # Tor Browser may be blocked in your country or corporate network. Use https://bridges.torproject.org or use Tor Browser over VPN. # Tor Browser user manual https://tb-manual.torproject.org/about
URLs

http://lockbit-decryptor.com/?BD61F8CA9173670AD93315626837E5B3

http://lockbitks2tvnmwk.onion/?BD61F8CA9173670AD93315626837E5B3

Signatures

  • Lockbit

    Ransomware family with multiple variants released since late 2019.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
  • Renames multiple (9347) files with added filename extension

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

  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

  • Deletes itself 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 64 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Modifies Control Panel 2 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\cea3e8a3e541ae4c928c3cd33f6772f1a69746393ac1a5c4575379a09a92d1e1.exe
    "C:\Users\Admin\AppData\Local\Temp\cea3e8a3e541ae4c928c3cd33f6772f1a69746393ac1a5c4575379a09a92d1e1.exe"
    1⤵
    • Adds Run key to start application
    • Enumerates connected drives
    • Sets desktop wallpaper using registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Program Files directory
    • Modifies Control Panel
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2320
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin delete shadows /all /quiet & wmic shadowcopy delete & bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no & wbadmin delete catalog -quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2700
      • C:\Windows\system32\vssadmin.exe
        vssadmin delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:2856
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic shadowcopy delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1404
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {default} bootstatuspolicy ignoreallfailures
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:808
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {default} recoveryenabled no
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:1972
      • C:\Windows\system32\wbadmin.exe
        wbadmin delete catalog -quiet
        3⤵
        • Deletes backup catalog
        PID:3044
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C ping 127.0.0.7 -n 3 > Nul & fsutil file setZeroData offset=0 length=524288 "C:\Users\Admin\AppData\Local\Temp\cea3e8a3e541ae4c928c3cd33f6772f1a69746393ac1a5c4575379a09a92d1e1.exe" & Del /f /q "C:\Users\Admin\AppData\Local\Temp\cea3e8a3e541ae4c928c3cd33f6772f1a69746393ac1a5c4575379a09a92d1e1.exe"
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:1636
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.7 -n 3
        3⤵
        • Runs ping.exe
        PID:884
      • C:\Windows\SysWOW64\fsutil.exe
        fsutil file setZeroData offset=0 length=524288 "C:\Users\Admin\AppData\Local\Temp\cea3e8a3e541ae4c928c3cd33f6772f1a69746393ac1a5c4575379a09a92d1e1.exe"
        3⤵
          PID:2256
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2592
    • C:\Windows\system32\wbengine.exe
      "C:\Windows\system32\wbengine.exe"
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:400
    • C:\Windows\System32\vdsldr.exe
      C:\Windows\System32\vdsldr.exe -Embedding
      1⤵
        PID:884
      • C:\Windows\System32\vds.exe
        C:\Windows\System32\vds.exe
        1⤵
          PID:2792

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Program Files\DVD Maker\es-ES\Restore-My-Files.txt

          Filesize

          1KB

          MD5

          a1fb04a0cf4c4a032a3586403ae4426b

          SHA1

          2f0964efa6a51f98888e2dffd09dab07571dee26

          SHA256

          837a3bae4d1e1e747187bb27d2a1419869132e5f8fa1cecff4c3cc81d6db5151

          SHA512

          86308600154496abffdc281ace920d23cc25cbd9dff3d0c6f496f7aaa596dfc002f49491eb4287d12c3a9606ad604ae2668a8b36cb3352d2329d6038003f3a01