Analysis

  • max time kernel
    163s
  • max time network
    175s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-03-2024 04:20

General

  • Target

    b9d3d54532bcc21e9b05754ae0a2f81df5434e4dfd1fcbc840e5466ca38d3060.exe

  • Size

    959KB

  • MD5

    1e9e399b7a31cc85062cb039bae72a44

  • SHA1

    3702b81069cbb9251be59f85d25c54b55443ae72

  • SHA256

    b9d3d54532bcc21e9b05754ae0a2f81df5434e4dfd1fcbc840e5466ca38d3060

  • SHA512

    edf2c5cc11d564b40850e1741eec8477d90e55304d1bc08646c826f100877ae71057e8fbd4b1df164d67e891c826f30be1127d7d9a8dced09dafad7693031a9a

  • SSDEEP

    24576:uLjr3s2nScu1i1tz3f++5kRzFxk7rMxNeR1R9qpdxF:Ujrc2So1Ff+B3k796n

Malware Config

Extracted

Path

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

Ransom Note
LockBit 2.0 Ransomware Your data are stolen and encrypted The data will be published on TOR website http://lockbitapt6vx57t3eeqjofwgcglmutr3a35nygvokja5uuccip4ykyd.onion and https://bigblog.at if you do not pay the ransom You can contact us and decrypt one file for free on these TOR sites http://lockbitsup4yezcd5enk5unncx3zcy7kw6wllyqmiyhvanjj352jayid.onion http://lockbitsap2oaqhcun3syvbqt6n5nzt7fqosc6jdlmsfleu3ka4k2did.onion OR https://decoding.at Decryption ID: 83F5679388A5D93BCD44629DCF3A5C9D
URLs

http://lockbitapt6vx57t3eeqjofwgcglmutr3a35nygvokja5uuccip4ykyd.onion

https://bigblog.at

http://lockbitsup4yezcd5enk5unncx3zcy7kw6wllyqmiyhvanjj352jayid.onion

http://lockbitsap2oaqhcun3syvbqt6n5nzt7fqosc6jdlmsfleu3ka4k2did.onion

https://decoding.at

Extracted

Path

C:\Users\Admin\Desktop\LockBit_Ransomware.hta

Ransom Note
Any attempts to restore your files with the thrid-party software will be fatal for your files! To recovery your data and not to allow data leakage, it is possible only through purchase of a private key from us There is only one way to get your files back: Through a standard browser Brave (supports Tor links) FireFox Chrome Edge Opera Open link - https://decoding.at/ Through a Tor Browser - recommended Download Tor Browser - https://www.torproject.org/ and install it. Open one of links in Tor browser and follow instructions on these pages: http://lockbitsap2oaqhcun3syvbqt6n5nzt7fqosc6jdlmsfleu3ka4k2did.onion/or mirrorhttp://lockbitsup4yezcd5enk5unncx3zcy7kw6wllyqmiyhvanjj352jayid.onion/These links work only in the Tor browser! Follow the instructions on this page https://decoding.at may be blocked. We recommend using a Tor browser (or Brave) to access the TOR 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 All your stolen important data will be loaded into our blog if you do not pay ransom. Our blog http://lockbitapt6vx57t3eeqjofwgcglmutr3a35nygvokja5uuccip4ykyd.onion or https://bigblog.at where you can see data of the companies which refused to pay ransom.
URLs

https://decoding.at/

http://lockbitsap2oaqhcun3syvbqt6n5nzt7fqosc6jdlmsfleu3ka4k2did.onion/or

https://decoding.at

http://lockbitapt6vx57t3eeqjofwgcglmutr3a35nygvokja5uuccip4ykyd.onion

https://bigblog.at

Signatures

  • Lockbit

    Ransomware family with multiple variants released since late 2019.

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Creates a large amount of network flows 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

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

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

  • Drops file in System32 directory 6 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 18 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
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

  • Modifies Control Panel 2 IoCs
  • Modifies registry class 15 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 47 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs
  • 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\b9d3d54532bcc21e9b05754ae0a2f81df5434e4dfd1fcbc840e5466ca38d3060.exe
    "C:\Users\Admin\AppData\Local\Temp\b9d3d54532bcc21e9b05754ae0a2f81df5434e4dfd1fcbc840e5466ca38d3060.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops file in System32 directory
    • Sets desktop wallpaper using registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Program Files directory
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1452
    • 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
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1216
      • C:\Windows\system32\vssadmin.exe
        vssadmin delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:1380
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic shadowcopy delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1908
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {default} bootstatuspolicy ignoreallfailures
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:4492
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {default} recoveryenabled no
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:5052
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\LockBit_Ransomware.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
      2⤵
        PID:4060
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4060 -s 1792
          3⤵
          • Program crash
          PID:5556
      • 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\b9d3d54532bcc21e9b05754ae0a2f81df5434e4dfd1fcbc840e5466ca38d3060.exe" & Del /f /q "C:\Users\Admin\AppData\Local\Temp\b9d3d54532bcc21e9b05754ae0a2f81df5434e4dfd1fcbc840e5466ca38d3060.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1864
        • C:\Windows\SysWOW64\PING.EXE
          ping 127.0.0.7 -n 3
          3⤵
          • Runs ping.exe
          PID:2912
        • C:\Windows\SysWOW64\fsutil.exe
          fsutil file setZeroData offset=0 length=524288 "C:\Users\Admin\AppData\Local\Temp\b9d3d54532bcc21e9b05754ae0a2f81df5434e4dfd1fcbc840e5466ca38d3060.exe"
          3⤵
            PID:6136
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:3924
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3988 --field-trial-handle=2260,i,3303482231723870786,2954015409682154873,262144 --variations-seed-version /prefetch:8
        1⤵
          PID:840
        • C:\Windows\system32\svchost.exe
          C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
          1⤵
            PID:5512
          • C:\Windows\system32\printfilterpipelinesvc.exe
            C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
            1⤵
            • Drops file in System32 directory
            • Suspicious use of WriteProcessMemory
            PID:1368
            • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
              /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{9F9FF143-DCAF-466B-9E96-0A872249DDEA}.xps" 133548637873640000
              2⤵
              • Suspicious use of WriteProcessMemory
              PID:1960
              • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeC2RClient.exe
                OfficeC2RClient.exe /error PID=1960 ProcessName="Microsoft OneNote" UIType=3 ErrorSource=0x8b10082a ErrorCode=0x80004005 ShowUI=1
                3⤵
                • Process spawned unexpected child process
                • Suspicious use of SetWindowsHookEx
                PID:3352
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4060 -ip 4060
            1⤵
              PID:3740

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

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

              Filesize

              512B

              MD5

              d249201c12bc7831dbe7952f526a6ecc

              SHA1

              602eb6506e294b5955a037fe1397aaa2e4681de3

              SHA256

              f2572fb4042113f858de042cb03a06886711a7e8a791d2051228511cf2bb57ec

              SHA512

              b3d6a3588650605aa08ca18c0e5609f646d370b398492d6351c0689c8c61a7d4fba155e1166ffb7bc1b925486f018e5020e599152dd097a5b66a34c43e00672d

            • C:\Users\Admin\Desktop\LockBit_Ransomware.hta

              Filesize

              46KB

              MD5

              c15c6adc8c923ad87981f289025c37b2

              SHA1

              bfe6533f4afe3255046f7178f289a4c75ad89e76

              SHA256

              90f3a33919fdd766e90fd96f8f20a92c2d1376b7cfdc8b738c2f8e7e6c7498b1

              SHA512

              31dd03b208e00ac012fbe4189d5af1306cc8e3640d40efefab4aa1cabab3c4735eef0cb65e7750c3c77021934e145398e5e26389975cf36b193c8f622a5fde83