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Analysis

  • max time kernel
    150s
  • max time network
    42s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    27/04/2022, 00:24

General

  • Target

    이력서(엑셀버전).exe

  • Size

    710KB

  • MD5

    7a668b5ec9a34afa512e471a20b8f932

  • SHA1

    e53653edc907842c577b3c6dda208a60b409ced8

  • SHA256

    b7e574928412c8142c2a1d9b1c35fcc9e698dd79291ba808d41407d8d06cbe29

  • SHA512

    f98ab8477997c01c17031d1312293626032e600f8af8081b0aee07176b15fe91ae305e4c4e48ed30491ae0e3a374347c5bfcf804c3315b1e8b18efadf3107789

Score
10/10

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\lpksetup\lpk-tmp-00000000\wow64_microsoft-windows-a..nce-tools.resources_31bf3856ad364e35_6.1.7600.16385_it-it_0cf159f3820f394b\readme-warning.txt

Family

makop

Ransom Note
::: Greetings ::: Little FAQ: .1. Q: Whats Happen? A: Your files have been encrypted and now have the "noctua" 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] or [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.

  • Loads dropped DLL 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 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 behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of WriteProcessMemory 43 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\이력서(엑셀버전).exe
    "C:\Users\Admin\AppData\Local\Temp\이력서(엑셀버전).exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1704
    • C:\Users\Admin\AppData\Local\Temp\이력서(엑셀버전).exe
      2⤵
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2036
      • C:\Users\Admin\AppData\Local\Temp\이력서(엑셀버전).exe
        "C:\Users\Admin\AppData\Local\Temp\이력서(엑셀버전).exe" n2036
        3⤵
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:1996
        • C:\Users\Admin\AppData\Local\Temp\이력서(엑셀버전).exe
          4⤵
            PID:1604
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 1996 -s 396
            4⤵
            • Program crash
            PID:1904
        • C:\Windows\system32\cmd.exe
          "C:\Windows\system32\cmd.exe"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1980
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            4⤵
            • Interacts with shadow copies
            PID:1116
          • C:\Windows\system32\wbadmin.exe
            wbadmin delete catalog -quiet
            4⤵
            • Deletes backup catalog
            PID:996
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic shadowcopy delete
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1344
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1704 -s 484
        2⤵
        • Program crash
        PID:2004
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1764
    • C:\Windows\system32\wbengine.exe
      "C:\Windows\system32\wbengine.exe"
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1476
    • C:\Windows\System32\vdsldr.exe
      C:\Windows\System32\vdsldr.exe -Embedding
      1⤵
        PID:1336
      • C:\Windows\System32\vds.exe
        C:\Windows\System32\vds.exe
        1⤵
          PID:1340

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\134245471

          Filesize

          541.9MB

          MD5

          bbf76acfd11f3816fd59caa99080fae5

          SHA1

          60f4929a845fccf7f5c3210f57153ec9be762ee9

          SHA256

          eecca479dcd255cf3bda5805ee1c4fd41629c52150e3058aee862d3b593036cc

          SHA512

          2518f1822e1d2e421e6a5392495451cde23b816d11534703348ccf808580eb188f1499e798fbd415adc5e2cc16c37ef75ba290901c4c33334809905271740c9a

        • C:\Users\Admin\AppData\Local\Temp\134245471

          Filesize

          541.9MB

          MD5

          7c67bec3f72d0f4747039a7f800f1d1c

          SHA1

          9bae791481ea6997595eddb35dce507e84828732

          SHA256

          f33a4ad03fe80ffabb1c0c0d9fa640c4a7c166a05e5fd06dd130d10b50016dd9

          SHA512

          470a9db9b53a0d34493b3eeca48674e2bcff704689844d93e878536d3536da64f84fb5cceac1dc59983aaf5d52d3378e2c559e120d1fa82a4123168b431613ec

        • \Users\Admin\AppData\Local\Temp\nst2148.tmp\System.dll

          Filesize

          12KB

          MD5

          cff85c549d536f651d4fb8387f1976f2

          SHA1

          d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e

          SHA256

          8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8

          SHA512

          531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88

        • \Users\Admin\AppData\Local\Temp\nsyAC67.tmp\System.dll

          Filesize

          12KB

          MD5

          cff85c549d536f651d4fb8387f1976f2

          SHA1

          d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e

          SHA256

          8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8

          SHA512

          531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88

        • memory/996-67-0x000007FEFBB71000-0x000007FEFBB73000-memory.dmp

          Filesize

          8KB

        • memory/1704-54-0x00000000755B1000-0x00000000755B3000-memory.dmp

          Filesize

          8KB

        • memory/2036-58-0x0000000000408000-0x0000000000409000-memory.dmp

          Filesize

          4KB

        • memory/2036-56-0x0000000000401000-0x0000000000407600-memory.dmp

          Filesize

          25KB