Overview

overview

10

Static

static

3

lkb99.exe

windows7-x64

9

lkb99.exe

windows10-1703-x64

10

lkb99.exe

windows10-2004-x64

10

lkb99.exe

windows11-21h2-x64

10

Resubmissions

23-01-2024 18:31

240123-w58bfsfbd5 10

17-11-2020 06:46

201117-dxqz14h7v2 10

Analysis

  • max time kernel
    145s
  • max time network
    155s
  • platform
    windows11-21h2_x64
  • resource
    win11-20231215-en
  • resource tags

    arch:x64arch:x86image:win11-20231215-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    23-01-2024 18:31

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General

  • Target

    lkb99.exe

  • Size

    552KB

  • MD5

    b4d493ac4428abf9aed55dc444d2073f

  • SHA1

    6948fd344891e36799a80d6828e42b09ca553b7a

  • SHA256

    41c611528db77b92eb0e0602215e63e6c2d7efbf1a11f980c514eb31ce9266c3

  • SHA512

    c4ab19333856e0c8f6a842c64967a9c1fc9ae3a24efc067b0cfe764ef4c8c97236a8afff64ebc983cade3e2775c93a3a35316bea9a6c9b1d4ecfa0acda224e75

  • SSDEEP

    6144:BXfHNiU8UC0QPfSfCSGSmBzpmlfdJqvAVB0koqAznCFJ+QSu5ClK0glKlriFT+s0:BX1iUhlQP6qX/qUnDC8ZC/wz

Score
10/10
lockbitevasionpersistenceransomware

Malware Config

Extracted

Path

C:\Program Files\dotnet\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.top/?8841DD9B0AC925FFEBDF24347999C060 | 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/?8841DD9B0AC925FFEBDF24347999C060 This link only works in Tor Browser! | 3. Follow the instructions on this page ### Attention! ### # lockbit-decryptor.top 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.top/?8841DD9B0AC925FFEBDF24347999C060

http://lockbitks2tvnmwk.onion/?8841DD9B0AC925FFEBDF24347999C060

Signatures

  • Lockbit

    Ransomware family with multiple variants released since late 2019.

    ransomwarelockbit
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
    ransomwareevasion
  • Renames multiple (197) files with added filename extension

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

    ransomware
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

    ransomware
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 1 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 14 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 4 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Interacts with shadow copies 2 TTPs 1 IoCs

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

    ransomware
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 50 IoCs
  • Suspicious use of WriteProcessMemory 12 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.

    persistence
  • Uses Volume Shadow Copy service COM API

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

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\lkb99.exe
    "C:\Users\Admin\AppData\Local\Temp\lkb99.exe"
    1⤵
    • Adds Run key to start application
    • Enumerates connected drives
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5988
    • 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:1484
      • C:\Windows\system32\vssadmin.exe
        vssadmin delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:5752
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic shadowcopy delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2668
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {default} bootstatuspolicy ignoreallfailures
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:704
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {default} recoveryenabled no
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:504
      • C:\Windows\system32\wbadmin.exe
        wbadmin delete catalog -quiet
        3⤵
        • Deletes backup catalog
        PID:5876
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5988 -s 1684
      2⤵
      • Program crash
      PID:1572
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3468
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5988 -ip 5988
    1⤵
      PID:4452
    • C:\Windows\system32\wbengine.exe
      "C:\Windows\system32\wbengine.exe"
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2936
    • C:\Windows\System32\vdsldr.exe
      C:\Windows\System32\vdsldr.exe -Embedding
      1⤵
        PID:568
      • C:\Windows\System32\vds.exe
        C:\Windows\System32\vds.exe
        1⤵
        • Checks SCSI registry key(s)
        PID:2764

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Program Files\dotnet\Restore-My-Files.txt
        Filesize

        1KB

        MD5

        f00023c8a06b5e11213946bdbe693b49

        SHA1

        80bdc2b01b4ded1bd9a908fb4a7dc476e19d162d

        SHA256

        befb231b2f96c1873904b821ec16c8a839f02e13ebe00b04d180a32a2388121d

        SHA512

        a130a372a3db95776dc5c5da844e94fa8effa998009828524b93d9d1f407908c06a45cb009a04b1650832bdc8a01a53be7cd08009430429560c9547c3c036013

        Download Submit

      • memory/5988-0-0x0000000002650000-0x0000000002BE0000-memory.dmp

        Filesize

        5.6MB

        Download

      • memory/5988-1-0x0000000000400000-0x000000000048E000-memory.dmp

        Filesize

        568KB

        Download

      • memory/5988-223-0x0000000000400000-0x000000000048E000-memory.dmp

        Filesize

        568KB

        Download

      • memory/5988-224-0x0000000002650000-0x0000000002BE0000-memory.dmp

        Filesize

        5.6MB

        Download