Analysis

  • max time kernel
    145s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    05-03-2022 20:53

General

  • Target

    c4b59e78c8f04caf59609f10f1f6ced44efc76384656a86de6d81dcab2d5acbd.exe

  • Size

    450KB

  • MD5

    064f9bb166e2d273804e8e9465afc030

  • SHA1

    d0ded8463d2f4b9533e6b894dc03bc0095c172ae

  • SHA256

    c4b59e78c8f04caf59609f10f1f6ced44efc76384656a86de6d81dcab2d5acbd

  • SHA512

    f120fcac42e9205cf82cb6f48cc0566a2f0609a366c83351f74f38ba9de7e60a263e1771dffa4b4dc9f1c26ab648bb52f0dff5d12c68d26db9eb3a7c7c0a32de

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\readme-warning.txt

Family

makop

Ransom Note
::: Greetings ::: Little FAQ: .1. Q: Whats Happen? A: Your files have been encrypted and now have the "fair" extension. The file structure was not damaged, we did everything possible so that this could not happen. .2. Q: How to recover files? A: If you wish to decrypt your files you will need to pay in bitcoins. .3. Q: What about guarantees? A: Its just a business. We absolutely do not care about you and your deals, except getting benefits. If we do not do our work and liabilities - nobody will cooperate with us. Its not in our interests. To check the ability of returning files, you can send to us any 2 files with SIMPLE extensions(jpg,xls,doc, etc... not databases!) and low sizes(max 1 mb), we will decrypt them and send back to you. That is our guarantee. .4. Q: How to contact with you? A: You can write us to our mailbox: [email protected] .5. Q: How will the decryption process proceed after payment? A: After payment we will send to you our scanner-decoder program and detailed instructions for use. With this program you will be able to decrypt all your encrypted files. .6. Q: If I don�t want to pay bad people like you? A: If you will not cooperate with our service - for us, its does not matter. But you will lose your time and data, cause only we have the private key. In practice - time is much more valuable than money. :::BEWARE::: DON'T try to change encrypted files by yourself! If you will try to use any third party software for restoring your data or antivirus solutions - please make a backup for all encrypted files! Any changes in encrypted files may entail damage of the private key and, as result, the loss all data.

Signatures

  • Makop

    Ransomware family discovered by @VK_Intel in early 2020.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of WriteProcessMemory 43 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c4b59e78c8f04caf59609f10f1f6ced44efc76384656a86de6d81dcab2d5acbd.exe
    "C:\Users\Admin\AppData\Local\Temp\c4b59e78c8f04caf59609f10f1f6ced44efc76384656a86de6d81dcab2d5acbd.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1192
    • C:\Users\Admin\AppData\Local\Temp\c4b59e78c8f04caf59609f10f1f6ced44efc76384656a86de6d81dcab2d5acbd.exe
      "C:\Users\Admin\AppData\Local\Temp\c4b59e78c8f04caf59609f10f1f6ced44efc76384656a86de6d81dcab2d5acbd.exe"
      2⤵
      • Adds Run key to start application
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1684
      • C:\Users\Admin\AppData\Local\Temp\c4b59e78c8f04caf59609f10f1f6ced44efc76384656a86de6d81dcab2d5acbd.exe
        "C:\Users\Admin\AppData\Local\Temp\c4b59e78c8f04caf59609f10f1f6ced44efc76384656a86de6d81dcab2d5acbd.exe" n1684
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1380
        • C:\Users\Admin\AppData\Local\Temp\c4b59e78c8f04caf59609f10f1f6ced44efc76384656a86de6d81dcab2d5acbd.exe
          "C:\Users\Admin\AppData\Local\Temp\c4b59e78c8f04caf59609f10f1f6ced44efc76384656a86de6d81dcab2d5acbd.exe"
          4⤵
            PID:1648
        • C:\Windows\system32\cmd.exe
          "C:\Windows\system32\cmd.exe"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1384
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            4⤵
            • Interacts with shadow copies
            PID:1672
          • C:\Windows\system32\wbadmin.exe
            wbadmin delete catalog -quiet
            4⤵
            • Deletes backup catalog
            PID:1112
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic shadowcopy delete
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1632
        • C:\Users\Admin\AppData\Local\Temp\c4b59e78c8f04caf59609f10f1f6ced44efc76384656a86de6d81dcab2d5acbd.exe
          "C:\Users\Admin\AppData\Local\Temp\c4b59e78c8f04caf59609f10f1f6ced44efc76384656a86de6d81dcab2d5acbd.exe" n1684
          3⤵
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:1732
          • C:\Users\Admin\AppData\Local\Temp\c4b59e78c8f04caf59609f10f1f6ced44efc76384656a86de6d81dcab2d5acbd.exe
            "C:\Users\Admin\AppData\Local\Temp\c4b59e78c8f04caf59609f10f1f6ced44efc76384656a86de6d81dcab2d5acbd.exe"
            4⤵
              PID:2004
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1660
      • C:\Windows\system32\wbengine.exe
        "C:\Windows\system32\wbengine.exe"
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:648
      • C:\Windows\System32\vdsldr.exe
        C:\Windows\System32\vdsldr.exe -Embedding
        1⤵
          PID:2028
        • C:\Windows\System32\vds.exe
          C:\Windows\System32\vds.exe
          1⤵
            PID:1704

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • memory/1112-93-0x000007FEFBD71000-0x000007FEFBD73000-memory.dmp

            Filesize

            8KB

          • memory/1192-56-0x0000000074450000-0x0000000074B3E000-memory.dmp

            Filesize

            6.9MB

          • memory/1192-57-0x0000000075831000-0x0000000075833000-memory.dmp

            Filesize

            8KB

          • memory/1192-58-0x0000000004EA0000-0x0000000004EA1000-memory.dmp

            Filesize

            4KB

          • memory/1192-59-0x0000000000220000-0x0000000000236000-memory.dmp

            Filesize

            88KB

          • memory/1192-55-0x0000000000E80000-0x0000000000EF4000-memory.dmp

            Filesize

            464KB

          • memory/1380-74-0x0000000000E80000-0x0000000000EF4000-memory.dmp

            Filesize

            464KB

          • memory/1380-78-0x00000000003A0000-0x00000000003B6000-memory.dmp

            Filesize

            88KB

          • memory/1380-77-0x0000000004B30000-0x0000000004B31000-memory.dmp

            Filesize

            4KB

          • memory/1380-76-0x0000000073D60000-0x000000007444E000-memory.dmp

            Filesize

            6.9MB

          • memory/1684-60-0x0000000000400000-0x000000000041E000-memory.dmp

            Filesize

            120KB

          • memory/1684-73-0x0000000000400000-0x000000000041E000-memory.dmp

            Filesize

            120KB

          • memory/1684-70-0x0000000000400000-0x000000000041E000-memory.dmp

            Filesize

            120KB

          • memory/1684-68-0x0000000000400000-0x000000000041E000-memory.dmp

            Filesize

            120KB

          • memory/1684-66-0x0000000000400000-0x000000000041E000-memory.dmp

            Filesize

            120KB

          • memory/1684-64-0x0000000000400000-0x000000000041E000-memory.dmp

            Filesize

            120KB

          • memory/1684-62-0x0000000000400000-0x000000000041E000-memory.dmp

            Filesize

            120KB

          • memory/1732-94-0x0000000000E80000-0x0000000000EF4000-memory.dmp

            Filesize

            464KB

          • memory/1732-96-0x00000000002F0000-0x0000000000306000-memory.dmp

            Filesize

            88KB

          • memory/1732-98-0x0000000000E30000-0x0000000000E31000-memory.dmp

            Filesize

            4KB

          • memory/1732-97-0x00000000740B0000-0x000000007479E000-memory.dmp

            Filesize

            6.9MB