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Analysis

  • max time kernel
    114s
  • max time network
    116s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    25/03/2025, 14:56

General

  • Target

    RansomwareSamples/MAKOP_27_10_2020_115KB.exe

  • Size

    114KB

  • MD5

    b33e8ce6a7035bee5c5472d5b870b68a

  • SHA1

    783d08fe374f287a4e0412ed8b7f5446c6e65687

  • SHA256

    2b5a3934d3e81fee4654bb1a7288c81af158a6d48a666cf8e379b0492551188f

  • SHA512

    78c36e1f8ba968d55e8b469fba9623bd20f9d7216b4f5983388c32be564484caab228935f96fd8bff82bc8bb8732f7beb9ccede50385b6b6ba7e23b5cc60679f

  • SSDEEP

    3072:Rf1BDZ0kVB67Duw9AMcUTeQnbZ7pgHzL8O1oc8rEUvZfqv8dOWVIc:R9X0GGZpYzL8VcFUvZyUdb

Malware Config

Extracted

Path

C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\readme-warning.txt

Family

makop

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

  • Makop family
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Renames multiple (8315) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 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).

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

  • Interacts with shadow copies 3 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 23 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\RansomwareSamples\MAKOP_27_10_2020_115KB.exe
    "C:\Users\Admin\AppData\Local\Temp\RansomwareSamples\MAKOP_27_10_2020_115KB.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:3056
    • C:\Users\Admin\AppData\Local\Temp\RansomwareSamples\MAKOP_27_10_2020_115KB.exe
      "C:\Users\Admin\AppData\Local\Temp\RansomwareSamples\MAKOP_27_10_2020_115KB.exe"
      2⤵
      • Adds Run key to start application
      • Enumerates connected drives
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2764
      • C:\Users\Admin\AppData\Local\Temp\RansomwareSamples\MAKOP_27_10_2020_115KB.exe
        "C:\Users\Admin\AppData\Local\Temp\RansomwareSamples\MAKOP_27_10_2020_115KB.exe" n2764
        3⤵
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:2124
        • C:\Users\Admin\AppData\Local\Temp\RansomwareSamples\MAKOP_27_10_2020_115KB.exe
          "C:\Users\Admin\AppData\Local\Temp\RansomwareSamples\MAKOP_27_10_2020_115KB.exe" n2764
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2728
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2988
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:2712
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:1240
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1912
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2776
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2272
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:2008
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
        PID:1492

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\readme-warning.txt

        Filesize

        1KB

        MD5

        d171c561e20fc9714f85da3c4331d0b6

        SHA1

        8f7e6cd4bda627a0a3d1a0e687c8b998db3b9438

        SHA256

        3c829147b1f82f255e4032d2a22d5b83932bc7f74f3540137146530be0353aac

        SHA512

        b52823ac0dba9dec6a243d1a3d68718c2a825dae4d6f4f312e92d87ecb87dbb066f259b317628fa588ad1abc4a59e095e5e302e53294bd8b34d414fadc8420c2

      • C:\Users\Admin\AppData\Roaming\779389082

        Filesize

        56KB

        MD5

        3f6c09c3ca38adeccf84a5af88d6e41e

        SHA1

        244fea7b90b9492486dc2eaec05970c6b17a4f72

        SHA256

        0195487ab8d8b1942ad35bdaf56a3a263e8175481ed396abd79c8963b0b23f3a

        SHA512

        7acc4fe60cd0ec977c71afa923fca844c300bb2f3893baf46d6e7838f489d26475a34fbca9dce6fbe65e602093fc3776eac22619e4dafb94835f2883a0e9173c

      • \Users\Admin\AppData\Local\Temp\nso3045.tmp\System.dll

        Filesize

        11KB

        MD5

        fccff8cb7a1067e23fd2e2b63971a8e1

        SHA1

        30e2a9e137c1223a78a0f7b0bf96a1c361976d91

        SHA256

        6fcea34c8666b06368379c6c402b5321202c11b00889401c743fb96c516c679e

        SHA512

        f4335e84e6f8d70e462a22f1c93d2998673a7616c868177cac3e8784a3be1d7d0bb96f2583fa0ed82f4f2b6b8f5d9b33521c279a42e055d80a94b4f3f1791e0c

      • memory/2728-2548-0x0000000000400000-0x000000000041F000-memory.dmp

        Filesize

        124KB

      • memory/2728-3345-0x0000000000400000-0x000000000041F000-memory.dmp

        Filesize

        124KB

      • memory/2728-3344-0x0000000000400000-0x000000000041F000-memory.dmp

        Filesize

        124KB

      • memory/2764-27-0x0000000000400000-0x000000000041F000-memory.dmp

        Filesize

        124KB

      • memory/2764-16-0x0000000000400000-0x000000000041F000-memory.dmp

        Filesize

        124KB

      • memory/2764-7-0x0000000000400000-0x000000000041F000-memory.dmp

        Filesize

        124KB

      • memory/2764-1584-0x0000000000400000-0x000000000041F000-memory.dmp

        Filesize

        124KB

      • memory/2764-10-0x0000000000400000-0x000000000041F000-memory.dmp

        Filesize

        124KB

      • memory/2764-9-0x0000000000400000-0x000000000041F000-memory.dmp

        Filesize

        124KB

      • memory/2764-17624-0x0000000000400000-0x000000000041F000-memory.dmp

        Filesize

        124KB