Analysis

  • max time kernel
    140s
  • max time network
    146s
  • platform
    windows10_x64
  • resource
    win10v200430
  • submitted
    06/07/2020, 07:13

General

  • Target
    c6e5a9f39bfc6dc46c2eb7a786948e9d111ddbec5e157c8081f7c22b7d6b3c78.exe
  • Size 247KB
  • Sample200706-payflwy1ba
  • SHA256 c6e5a9f39bfc6dc46c2eb7a786948e9d111ddbec5e157c8081f7c22b7d6b3c78
  • MD5 SHA1 SHA512

Malware Config

Extracted

Path
  • C:\odt\Restore-My-Files.txt

  • 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/?ADDD79899D34FB74A16BCF16BBFC5EC5 | 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/?ADDD79899D34FB74A16BCF16BBFC5EC5 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://lockbitks2tvnmwk.onion/?ADDD79899D34FB74A16BCF16BBFC5EC5

Signatures

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Adds Run entry to start application 2 TTPs 2 IoCs
  • Modifies service 2 TTPs 5 IoCs
  • Deletes system backup catalog 2 TTPs

    Ransomware often tries to delete backup files to inhibit system recovery.

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

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

  • Lockbit

    Ransomware family with multiple variants released since late 2019.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 275 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs
  • Drops desktop.ini file(s) 1 IoCs
  • Drops file in Program Files directory 17072 IoCs
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
  • Program crash 1 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 50 IoCs
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

Processes

  • C:\Users\Admin\AppData\Local\Temp\c6e5a9f39bfc6dc46c2eb7a786948e9d111ddbec5e157c8081f7c22b7d6b3c78.exe
    "C:\Users\Admin\AppData\Local\Temp\c6e5a9f39bfc6dc46c2eb7a786948e9d111ddbec5e157c8081f7c22b7d6b3c78.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Adds Run entry to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of WriteProcessMemory
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Suspicious use of AdjustPrivilegeToken
    PID:1164
    • 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:1076
      • C:\Windows\system32\vssadmin.exe
        vssadmin delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:2104
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic shadowcopy delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1992
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {default} bootstatuspolicy ignoreallfailures
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:2364
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {default} recoveryenabled no
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:1524
      • C:\Windows\system32\wbadmin.exe
        wbadmin delete catalog -quiet
        3⤵
        • Deletes backup catalog
        PID:1504
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1164 -s 1616
      2⤵
      • Program crash
      PID:5056
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Modifies service
    • Suspicious use of AdjustPrivilegeToken
    PID:868
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2196
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:2660
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3944

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          memory/1164-1-0x0000000002A20000-0x0000000002A21000-memory.dmp

          memory/1164-2-0x0000000002A20000-0x0000000002A21000-memory.dmp