Analysis

  • max time kernel
    73s
  • max time network
    161s
  • 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 04:09

General

  • Target

    2ecf1fe02d8fb099b68e4d9bceeeadbe5fc8347f5a76d52f35ed48b516963735.exe

  • Size

    959KB

  • MD5

    ebd239b8b8fe486b2a13a5896a96d044

  • SHA1

    60821226d8d934d488d4f8e8081c32c6a73f8929

  • SHA256

    2ecf1fe02d8fb099b68e4d9bceeeadbe5fc8347f5a76d52f35ed48b516963735

  • SHA512

    2bd55c0548c3bdccde061098ed314705c131e745c8a7503708f2e8a5c98beb94fb55c7f7a183945c199badcacae37d81e5edc9afd9c802b2778867928e7371f6

  • SSDEEP

    24576:uLjr3s2nScu1i1tz3f++5kRzFxk7rMxNeR1R9qpdHF:Ujrc2So1Ff+B3k7969

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: 9ED1D8ED9B71E453ABAA310EA52BA135
URLs

http://lockbitapt6vx57t3eeqjofwgcglmutr3a35nygvokja5uuccip4ykyd.onion

https://bigblog.at

http://lockbitsup4yezcd5enk5unncx3zcy7kw6wllyqmiyhvanjj352jayid.onion

http://lockbitsap2oaqhcun3syvbqt6n5nzt7fqosc6jdlmsfleu3ka4k2did.onion

https://decoding.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 1 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 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 17 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 registry class 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 24 IoCs
  • Suspicious use of AdjustPrivilegeToken 47 IoCs
  • Suspicious use of WriteProcessMemory 10 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\2ecf1fe02d8fb099b68e4d9bceeeadbe5fc8347f5a76d52f35ed48b516963735.exe
    "C:\Users\Admin\AppData\Local\Temp\2ecf1fe02d8fb099b68e4d9bceeeadbe5fc8347f5a76d52f35ed48b516963735.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops file in System32 directory
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Program Files directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:400
    • 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:4864
      • C:\Windows\system32\vssadmin.exe
        vssadmin delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:4856
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic shadowcopy delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2320
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {default} bootstatuspolicy ignoreallfailures
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:376
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {default} recoveryenabled no
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:3148
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3316
  • 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=1412 --field-trial-handle=2276,i,5697607538120380977,9987005253899555344,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:1844
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
      1⤵
        PID:4172
      • C:\Windows\system32\printfilterpipelinesvc.exe
        C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
        1⤵
          PID:1740
          • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
            /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{12A89450-697F-4958-B4EB-02191E0DEC28}.xps" 133548630871100000
            2⤵
              PID:2316
              • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeC2RClient.exe
                OfficeC2RClient.exe /error PID=2316 ProcessName="Microsoft OneNote" UIType=3 ErrorSource=0x8b10082a ErrorCode=0x80004005 ShowUI=1
                3⤵
                • Process spawned unexpected child process
                PID:2132

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            512B

            MD5

            0070dbbbf4a3af6e34b2ab752cb3b459

            SHA1

            b228e309bebb07b50d648b84f82a9a46fae7589b

            SHA256

            b4da757c55d148c31f5082e923daf53376d100c025ab2266d7e62772dfba2cf4

            SHA512

            3b8becf471935bf82599ffac2989b17eeb23cd7218853dc14ece669a4c12a9609833c9700966f9ca81d3824e74c8a750e2bbd1d894534f877a2f673eab7a4deb