Analysis

  • max time kernel
    4294211s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20220223-en
  • submitted
    06-03-2022 02:15

General

  • Target

    45f51b31a00c9ce48e8aba64482b953186fbe57431e383297a83000255fb0bb4.exe

  • Size

    644KB

  • MD5

    3f0f88f7b35eaa5d34fddb6928866d08

  • SHA1

    b7d63fbc6bb0ab24b42f8d041346cec7988c9342

  • SHA256

    45f51b31a00c9ce48e8aba64482b953186fbe57431e383297a83000255fb0bb4

  • SHA512

    bdc295d02a7686e879ed3f3e17fb059146c6cef35c6f16fdc12c2355c1501f35c164fe8a8ceeb5733aac2a7fff3fc76a16622e022c096552aec86e48ddc6fa71

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\3701988625\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.

  • Modifies extensions of user files 1 IoCs

    Ransomware generally changes the extension on encrypted files.

  • 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 4 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 53 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\45f51b31a00c9ce48e8aba64482b953186fbe57431e383297a83000255fb0bb4.exe
    "C:\Users\Admin\AppData\Local\Temp\45f51b31a00c9ce48e8aba64482b953186fbe57431e383297a83000255fb0bb4.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1112
    • C:\Users\Admin\AppData\Local\Temp\45f51b31a00c9ce48e8aba64482b953186fbe57431e383297a83000255fb0bb4.exe
      "C:\Users\Admin\AppData\Local\Temp\45f51b31a00c9ce48e8aba64482b953186fbe57431e383297a83000255fb0bb4.exe"
      2⤵
      • Modifies extensions of user files
      • Adds Run key to start application
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1120
      • C:\Users\Admin\AppData\Local\Temp\45f51b31a00c9ce48e8aba64482b953186fbe57431e383297a83000255fb0bb4.exe
        "C:\Users\Admin\AppData\Local\Temp\45f51b31a00c9ce48e8aba64482b953186fbe57431e383297a83000255fb0bb4.exe" n1120
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:900
        • C:\Users\Admin\AppData\Local\Temp\45f51b31a00c9ce48e8aba64482b953186fbe57431e383297a83000255fb0bb4.exe
          "C:\Users\Admin\AppData\Local\Temp\45f51b31a00c9ce48e8aba64482b953186fbe57431e383297a83000255fb0bb4.exe"
          4⤵
            PID:1648
        • C:\Windows\system32\cmd.exe
          "C:\Windows\system32\cmd.exe"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1380
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            4⤵
            • Interacts with shadow copies
            PID:1940
          • C:\Windows\system32\wbadmin.exe
            wbadmin delete catalog -quiet
            4⤵
            • Deletes backup catalog
            PID:1284
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic shadowcopy delete
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1116
        • C:\Users\Admin\AppData\Local\Temp\45f51b31a00c9ce48e8aba64482b953186fbe57431e383297a83000255fb0bb4.exe
          "C:\Users\Admin\AppData\Local\Temp\45f51b31a00c9ce48e8aba64482b953186fbe57431e383297a83000255fb0bb4.exe" n1120
          3⤵
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:1612
          • C:\Users\Admin\AppData\Local\Temp\45f51b31a00c9ce48e8aba64482b953186fbe57431e383297a83000255fb0bb4.exe
            "C:\Users\Admin\AppData\Local\Temp\45f51b31a00c9ce48e8aba64482b953186fbe57431e383297a83000255fb0bb4.exe"
            4⤵
              PID:1584
          • C:\Users\Admin\AppData\Local\Temp\45f51b31a00c9ce48e8aba64482b953186fbe57431e383297a83000255fb0bb4.exe
            "C:\Users\Admin\AppData\Local\Temp\45f51b31a00c9ce48e8aba64482b953186fbe57431e383297a83000255fb0bb4.exe" n1120
            3⤵
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1648
            • C:\Users\Admin\AppData\Local\Temp\45f51b31a00c9ce48e8aba64482b953186fbe57431e383297a83000255fb0bb4.exe
              "C:\Users\Admin\AppData\Local\Temp\45f51b31a00c9ce48e8aba64482b953186fbe57431e383297a83000255fb0bb4.exe"
              4⤵
                PID:1352
            • C:\Users\Admin\AppData\Local\Temp\45f51b31a00c9ce48e8aba64482b953186fbe57431e383297a83000255fb0bb4.exe
              "C:\Users\Admin\AppData\Local\Temp\45f51b31a00c9ce48e8aba64482b953186fbe57431e383297a83000255fb0bb4.exe" n1120
              3⤵
                PID:1388
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1540
          • C:\Windows\system32\wbengine.exe
            "C:\Windows\system32\wbengine.exe"
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1296
          • C:\Windows\System32\vdsldr.exe
            C:\Windows\System32\vdsldr.exe -Embedding
            1⤵
              PID:1660
            • C:\Windows\System32\vds.exe
              C:\Windows\System32\vds.exe
              1⤵
                PID:780

              Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

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              Downloads

              • memory/900-73-0x0000000000FC0000-0x0000000001064000-memory.dmp

                Filesize

                656KB

              • memory/900-76-0x0000000073F90000-0x000000007467E000-memory.dmp

                Filesize

                6.9MB

              • memory/900-77-0x00000000009C0000-0x00000000009C1000-memory.dmp

                Filesize

                4KB

              • memory/900-75-0x00000000002E0000-0x00000000002F6000-memory.dmp

                Filesize

                88KB

              • memory/1112-55-0x0000000074040000-0x000000007472E000-memory.dmp

                Filesize

                6.9MB

              • memory/1112-56-0x00000000757F1000-0x00000000757F3000-memory.dmp

                Filesize

                8KB

              • memory/1112-57-0x00000000001F0000-0x0000000000206000-memory.dmp

                Filesize

                88KB

              • memory/1112-58-0x0000000000200000-0x0000000000201000-memory.dmp

                Filesize

                4KB

              • memory/1112-54-0x0000000000FC0000-0x0000000001064000-memory.dmp

                Filesize

                656KB

              • memory/1120-61-0x0000000000400000-0x000000000041E000-memory.dmp

                Filesize

                120KB

              • memory/1120-72-0x0000000000400000-0x000000000041E000-memory.dmp

                Filesize

                120KB

              • memory/1120-67-0x0000000000400000-0x000000000041E000-memory.dmp

                Filesize

                120KB

              • memory/1120-65-0x0000000000400000-0x000000000041E000-memory.dmp

                Filesize

                120KB

              • memory/1120-63-0x0000000000400000-0x000000000041E000-memory.dmp

                Filesize

                120KB

              • memory/1120-59-0x0000000000400000-0x000000000041E000-memory.dmp

                Filesize

                120KB

              • memory/1120-69-0x0000000000400000-0x000000000041E000-memory.dmp

                Filesize

                120KB

              • memory/1284-92-0x000007FEFB651000-0x000007FEFB653000-memory.dmp

                Filesize

                8KB

              • memory/1388-131-0x0000000073B50000-0x000000007423E000-memory.dmp

                Filesize

                6.9MB

              • memory/1388-132-0x0000000000F30000-0x0000000000F31000-memory.dmp

                Filesize

                4KB

              • memory/1612-95-0x0000000073B50000-0x000000007423E000-memory.dmp

                Filesize

                6.9MB

              • memory/1612-97-0x00000000003D0000-0x00000000003E6000-memory.dmp

                Filesize

                88KB

              • memory/1612-96-0x0000000000F20000-0x0000000000F21000-memory.dmp

                Filesize

                4KB

              • memory/1612-93-0x0000000000FC0000-0x0000000001064000-memory.dmp

                Filesize

                656KB

              • memory/1648-112-0x0000000000FC0000-0x0000000001064000-memory.dmp

                Filesize

                656KB

              • memory/1648-113-0x0000000073B00000-0x00000000741EE000-memory.dmp

                Filesize

                6.9MB

              • memory/1648-115-0x0000000004C80000-0x0000000004C81000-memory.dmp

                Filesize

                4KB