Overview

overview

10

Static

static

1

Fat32Formatter.exe

windows7_x64

10

Fat32Formatter.exe

windows10_x64

10

Analysis

  • max time kernel
    95s
  • max time network
    97s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    24-03-2021 09:49

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    Fat32Formatter.exe

  • Size

    286KB

  • MD5

    fc080ffd9e95c2d8694a139e84c673ef

  • SHA1

    195c3e7ce30b55d52b7e4bdca74613e2c9f7c16b

  • SHA256

    c5645239e94a63f672ce815de8a5f11c642ad0fdafe7ab0091807f7e286e3bfd

  • SHA512

    c969b8af4169d07653111ab31f4b4b4c5dc9582fe8e2de0e3986e9a5b2eca288751bbe57880b5adb6f2adfb1aac1c254314765abbc18be59877c6d526b2c56a2

Score
10/10
makopransomwarespywarestealer

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 "pecunia" 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] 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
  • 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
  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

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

  • 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 3 IoCs
    evasionspywaretrojan
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of WriteProcessMemory 23 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:1616
    • C:\Users\Admin\AppData\Local\Temp\Fat32Formatter.exe
      "C:\Users\Admin\AppData\Local\Temp\Fat32Formatter.exe"
      2⤵
      • Drops file in Program Files directory
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1748
      • C:\Users\Admin\AppData\Local\Temp\Fat32Formatter.exe
        "C:\Users\Admin\AppData\Local\Temp\Fat32Formatter.exe" n1748
        3⤵
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:1864
        • C:\Users\Admin\AppData\Local\Temp\Fat32Formatter.exe
          "C:\Users\Admin\AppData\Local\Temp\Fat32Formatter.exe" n1748
          4⤵
            PID:1572
        • C:\Windows\system32\cmd.exe
          "C:\Windows\system32\cmd.exe"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1708
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            4⤵
            • Interacts with shadow copies
            PID:1360
          • C:\Windows\system32\wbadmin.exe
            wbadmin delete catalog -quiet
            4⤵
            • Deletes backup catalog
            PID:1056
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic shadowcopy delete
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1648
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1688
    • C:\Windows\system32\wbengine.exe
      "C:\Windows\system32\wbengine.exe"
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:828
    • C:\Windows\System32\vdsldr.exe
      C:\Windows\System32\vdsldr.exe -Embedding
      1⤵
        PID:848
      • C:\Windows\System32\vds.exe
        C:\Windows\System32\vds.exe
        1⤵
          PID:888

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/1056-15-0x000007FEFC251000-0x000007FEFC253000-memory.dmp

          Filesize

          8KB

          Download

        • memory/1584-23-0x000007FEF7BD0000-0x000007FEF7E4A000-memory.dmp

          Filesize

          2.5MB

          Download

        • memory/1616-2-0x00000000765A1000-0x00000000765A3000-memory.dmp

          Filesize

          8KB

          Download

        • memory/1748-12-0x0000000000400000-0x000000000041E000-memory.dmp

          Filesize

          120KB

          Download