Overview

overview

10

Static

static

1

Fat32Formatter.exe

windows7_x64

10

Fat32Formatter.exe

windows10_x64

10

Analysis

  • max time kernel
    136s
  • max time network
    148s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    26-01-2021 14:41

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General

  • Target

    Fat32Formatter.exe

  • Size

    276KB

  • MD5

    57bfa19c46f1b511836845dc3cf660f3

  • SHA1

    a90e180b514f4cdd8a5db72b4d65c42c1fb1e389

  • SHA256

    e85e974255245ba41d391acc207908eeddb5ec95285e5375496a89617c5fb843

  • SHA512

    f3dce6d32e009000618c3f3dc0939e1bca21ad4bf3a1ae46a74fafcff54884d07be751dad610790db3e92c116a5878f76a8c7b5aaae892fef702ca912239d48a

Score
10/10
makoppersistenceransomwarespyware

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 "moloch" 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.

    ransomwaremakop
  • Suspicious use of NtCreateUserProcessOtherParentProcess 4 IoCs
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

    ransomware
  • Modifies extensions of user files 1 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Loads dropped DLL 5 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spyware
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

    ransomware
  • Suspicious use of SetThreadContext 5 IoCs
  • Drops file in Program Files directory 17732 IoCs
  • Checks SCSI registry key(s) 3 TTPs 4 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Interacts with shadow copies 2 TTPs 1 IoCs

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

    ransomware
  • Modifies system certificate store 2 TTPs 2 IoCs
    evasionspywaretrojan
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 50 IoCs
  • Suspicious use of WriteProcessMemory 56 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Fat32Formatter.exe
    "C:\Users\Admin\AppData\Local\Temp\Fat32Formatter.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:4764
    • C:\Users\Admin\AppData\Local\Temp\Fat32Formatter.exe
      "C:\Users\Admin\AppData\Local\Temp\Fat32Formatter.exe"
      2⤵
      • Modifies extensions of user files
      • Adds Run key to start application
      • Drops file in Program Files directory
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4196
      • C:\Users\Admin\AppData\Local\Temp\Fat32Formatter.exe
        "C:\Users\Admin\AppData\Local\Temp\Fat32Formatter.exe" n4196
        3⤵
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:4352
        • C:\Users\Admin\AppData\Local\Temp\Fat32Formatter.exe
          "C:\Users\Admin\AppData\Local\Temp\Fat32Formatter.exe" n4196
          4⤵
            PID:2848
        • C:\Windows\system32\cmd.exe
          "C:\Windows\system32\cmd.exe"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:560
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            4⤵
            • Interacts with shadow copies
            PID:860
          • C:\Windows\system32\wbadmin.exe
            wbadmin delete catalog -quiet
            4⤵
            • Deletes backup catalog
            PID:1424
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic shadowcopy delete
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2384
        • C:\Users\Admin\AppData\Local\Temp\Fat32Formatter.exe
          "C:\Users\Admin\AppData\Local\Temp\Fat32Formatter.exe" n4196
          3⤵
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:4740
          • C:\Users\Admin\AppData\Local\Temp\Fat32Formatter.exe
            "C:\Users\Admin\AppData\Local\Temp\Fat32Formatter.exe" n4196
            4⤵
              PID:212
          • C:\Users\Admin\AppData\Local\Temp\Fat32Formatter.exe
            "C:\Users\Admin\AppData\Local\Temp\Fat32Formatter.exe" n4196
            3⤵
            • Loads dropped DLL
            • Suspicious use of SetThreadContext
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:1016
            • C:\Users\Admin\AppData\Local\Temp\Fat32Formatter.exe
              "C:\Users\Admin\AppData\Local\Temp\Fat32Formatter.exe" n4196
              4⤵
                PID:4756
            • C:\Users\Admin\AppData\Local\Temp\Fat32Formatter.exe
              "C:\Users\Admin\AppData\Local\Temp\Fat32Formatter.exe" n4196
              3⤵
              • Loads dropped DLL
              • Suspicious use of SetThreadContext
              • Suspicious behavior: MapViewOfSection
              • Suspicious use of WriteProcessMemory
              PID:4684
              • C:\Users\Admin\AppData\Local\Temp\Fat32Formatter.exe
                "C:\Users\Admin\AppData\Local\Temp\Fat32Formatter.exe" n4196
                4⤵
                  PID:4416
          • \??\c:\windows\system32\svchost.exe
            c:\windows\system32\svchost.exe -k netsvcs -s seclogon
            1⤵
            • Suspicious use of NtCreateUserProcessOtherParentProcess
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:3904
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:492
          • C:\Windows\system32\wbengine.exe
            "C:\Windows\system32\wbengine.exe"
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1588
          • C:\Windows\System32\vdsldr.exe
            C:\Windows\System32\vdsldr.exe -Embedding
            1⤵
              PID:1900
            • C:\Windows\System32\vds.exe
              C:\Windows\System32\vds.exe
              1⤵
              • Checks SCSI registry key(s)
              PID:932

            Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            • memory/4196-7-0x0000000000400000-0x000000000041E000-memory.dmp

              Filesize

              120KB

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