Analysis

  • max time kernel
    137s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    17-12-2024 18:25

General

  • Target

    2024-12-17_67164c4680d767fcc5dbe48c3586444c_luca-stealer_ryuk.exe

  • Size

    384KB

  • MD5

    67164c4680d767fcc5dbe48c3586444c

  • SHA1

    059cea33a907a59d6f41b2aceef3571bf2a4ceb0

  • SHA256

    9c21c7149cf5980ee64d5fbb3f78a336b122cf7e92335718bcc5fa45e9dafb25

  • SHA512

    0db0054182afcb6c3b8564457224598985958fe409503a3b1954852bd9f54ecb5ee0bb68d7a8551f369836d7e825c1bb6cda9f47f66aa43ce10d6f1b30bfe31a

  • SSDEEP

    6144:f5yaWtrA/WSo1rl3ALrlHQpn0BwK3SBDmhYfFQ:fTW6WSofcZ+KCIG

Malware Config

Extracted

Path

C:\RyukReadMe.txt

Family

ryuk

Ransom Note
Your network has been penetrated. All files on each host in the network have been encrypted with a strong algorithm. Backups were either encrypted or deleted or backup disks were formatted. Shadow copies also removed, so F8 or any other methods may damage encrypted data but not recover. We exclusively have decryption software for your situation No decryption software is available in the public. DO NOT RESET OR SHUTDOWN - files may be damaged. DO NOT RENAME OR MOVE the encrypted and readme files. DO NOT DELETE readme files. This may lead to the impossibility of recovery of the certain files. To get info (decrypt your files) contact us at [email protected] or [email protected] BTC wallet: 14hVKm7Ft2rxDBFTNkkRC3kGstMGp2A4hk Ryuk No system is safe
Wallets

14hVKm7Ft2rxDBFTNkkRC3kGstMGp2A4hk

Signatures

  • Ryuk

    Ransomware distributed via existing botnets, often Trickbot or Emotet.

  • Ryuk family
  • Deletes itself 1 IoCs
  • Drops startup file 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Windows\system32\taskhost.exe
    "taskhost.exe"
    1⤵
    • Drops startup file
    • Drops file in Program Files directory
    PID:1128
  • C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    1⤵
      PID:1180
    • C:\Windows\system32\DllHost.exe
      C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
      1⤵
        PID:1364
      • C:\Users\Admin\AppData\Local\Temp\2024-12-17_67164c4680d767fcc5dbe48c3586444c_luca-stealer_ryuk.exe
        "C:\Users\Admin\AppData\Local\Temp\2024-12-17_67164c4680d767fcc5dbe48c3586444c_luca-stealer_ryuk.exe"
        1⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2692
        • C:\users\Public\UXUMa.exe
          "C:\users\Public\UXUMa.exe" C:\Users\Admin\AppData\Local\Temp\2024-12-17_67164c4680d767fcc5dbe48c3586444c_luca-stealer_ryuk.exe
          2⤵
          • Deletes itself
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1732
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /C REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\users\Public\UXUMa.exe" /f
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:2416
            • C:\Windows\system32\reg.exe
              REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\users\Public\UXUMa.exe" /f
              4⤵
              • Adds Run key to start application
              PID:2304

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\RyukReadMe.txt

        Filesize

        804B

        MD5

        cd99cba6153cbc0b14b7a849e4d0180f

        SHA1

        375961866404a705916cbc6cd4915de7d9778923

        SHA256

        74c43a177917b1d57ea2eaf6212ccf3b9012b4d68bc45284349443eed0bf5ee2

        SHA512

        0c9f250c0e2ec9736b072a9807b6c3bec4b670ab2f511e65cf5d79e9a8c9a209eb91736ce2765b52b6d94a57c6aa1c16bb08e16727660699b70608439c8b7cda

      • \Users\Public\UXUMa.exe

        Filesize

        170KB

        MD5

        31bd0f224e7e74eee2847f43aae23974

        SHA1

        92e331e1e8ad30538f38dd7ba31386afafa14a58

        SHA256

        8b0a5fb13309623c3518473551cb1f55d38d8450129d4a3c16b476f7b2867d7d

        SHA512

        a13f05a12b084ef425f542ff4be824bbccb5dbdfe085af8b7e19d81a6bcba4b8c1debcc38f6b57bc9265a4db21eed70852ece8cc62b3ef14c47fca3035a55249

      • memory/1128-7-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-5-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-8-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-25-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-196-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-195-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-45-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-44-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-43-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-39-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-38-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-37-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-36-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-33-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-32-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-31-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-194-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-30-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-29-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-28-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-27-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-26-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-192-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-47-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-107-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-105-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-102-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-101-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-100-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-97-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-534-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-95-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-93-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-91-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-90-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-88-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-86-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-84-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-82-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-80-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-78-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-76-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-74-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-73-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-71-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-67-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-66-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-65-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-64-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-61-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-60-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-59-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-58-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-55-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-54-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-53-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-52-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-49-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1128-48-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB

      • memory/1180-535-0x000000013FD10000-0x000000014009E000-memory.dmp

        Filesize

        3.6MB