Resubmissions

15-02-2024 07:50

240215-jpn7escg92 10

15-02-2024 06:53

240215-hnmrjabc51 10

Analysis

  • max time kernel
    143s
  • max time network
    311s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15-02-2024 07:50

General

  • Target

    f3e891a2a39dd948cd85e1c8335a83e640d0987dbd48c16001a02f6b7c1733ae.exe

  • Size

    862KB

  • MD5

    af9ff037caca1f316e7d05db86dbd882

  • SHA1

    844e9b219aaecb26de4994a259f822500fb75ae1

  • SHA256

    f3e891a2a39dd948cd85e1c8335a83e640d0987dbd48c16001a02f6b7c1733ae

  • SHA512

    e3cc5ca9fa5c4f23dd97389f86af276798ae4db4a68d38812fce25549e7f18e41d2bfc9fa72d3110a54ac88038cb27d3210bd099c6c3975befe5b36a569cd494

  • SSDEEP

    24576:DxAf2NuubB6RWspgjuwu7pl4Ha+UmxJH+Q1F:dAfSrWW4g+7Ht+UmxJeW

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: F4B0B5EF9DC08D87EE4F013B985C2150
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.

  • Creates a large amount of network flows 1 TTPs

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

  • 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 1 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
  • Modifies Control Panel 2 IoCs
  • Modifies registry class 15 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f3e891a2a39dd948cd85e1c8335a83e640d0987dbd48c16001a02f6b7c1733ae.exe
    "C:\Users\Admin\AppData\Local\Temp\f3e891a2a39dd948cd85e1c8335a83e640d0987dbd48c16001a02f6b7c1733ae.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:4324
    • 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:3100
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3100 -s 1780
          3⤵
          • Program crash
          PID:4384
      • 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\f3e891a2a39dd948cd85e1c8335a83e640d0987dbd48c16001a02f6b7c1733ae.exe" & Del /f /q "C:\Users\Admin\AppData\Local\Temp\f3e891a2a39dd948cd85e1c8335a83e640d0987dbd48c16001a02f6b7c1733ae.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3524
        • C:\Windows\SysWOW64\PING.EXE
          ping 127.0.0.7 -n 3
          3⤵
          • Runs ping.exe
          PID:4116
        • C:\Windows\SysWOW64\fsutil.exe
          fsutil file setZeroData offset=0 length=524288 "C:\Users\Admin\AppData\Local\Temp\f3e891a2a39dd948cd85e1c8335a83e640d0987dbd48c16001a02f6b7c1733ae.exe"
          3⤵
            PID:1700
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3100 -ip 3100
        1⤵
          PID:920

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          512B

          MD5

          666be4155fd00abfb0ab29be2dfa6936

          SHA1

          cce433984f37e80856d2d72e00371dc8733e571b

          SHA256

          3c0e2e056ab0dcb33be76f00ee517450374980aafd89a530f43b201b91f32689

          SHA512

          f9df143fe2251074d8607a16dc842cb3c38432b45d946cd75b5dbbf1ffcb6b4486617054e81b4e8033eebe27470d8defc19f5a228f8b5c8d1b48d6487245c68a

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

          Filesize

          46KB

          MD5

          c15c6adc8c923ad87981f289025c37b2

          SHA1

          bfe6533f4afe3255046f7178f289a4c75ad89e76

          SHA256

          90f3a33919fdd766e90fd96f8f20a92c2d1376b7cfdc8b738c2f8e7e6c7498b1

          SHA512

          31dd03b208e00ac012fbe4189d5af1306cc8e3640d40efefab4aa1cabab3c4735eef0cb65e7750c3c77021934e145398e5e26389975cf36b193c8f622a5fde83

        • memory/4324-8068-0x000000005BBB0000-0x000000005BDC0000-memory.dmp

          Filesize

          2.1MB

        • memory/4324-8069-0x0000000059FA0000-0x0000000059FBB000-memory.dmp

          Filesize

          108KB

        • memory/4324-8070-0x000000005C6A0000-0x000000005C848000-memory.dmp

          Filesize

          1.7MB

        • memory/4324-8072-0x000000005C850000-0x000000005CA7B000-memory.dmp

          Filesize

          2.2MB

        • memory/4324-8073-0x000000005CD00000-0x000000005D0A1000-memory.dmp

          Filesize

          3.6MB

        • memory/4324-8071-0x000000005A000000-0x000000005A01D000-memory.dmp

          Filesize

          116KB