Resubmissions

04/03/2025, 04:28

250304-e328zs1lt2 10

04/03/2025, 04:21

250304-eyvcks1jz6 10

Analysis

  • max time kernel
    145s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/03/2025, 04:21

General

  • Target

    2025-03-04_b032ecd86b56a0073d46319c04c22387_makop_ramnit.exe

  • Size

    300KB

  • MD5

    b032ecd86b56a0073d46319c04c22387

  • SHA1

    7dc793419d208948c9dec4e98b5613d92c11464c

  • SHA256

    923686c8d1c000dc4a3422918517528a42bbb9a342ccd99ce996f26f55611560

  • SHA512

    534a4585dcaffc7bae5708cf4a5406544339d29a06621ef2797035a00bd2ce6d9de47ea33da43402028aaaf084859ae607b7efaf692db160ad192b239511e7ae

  • SSDEEP

    3072:iQQhGI14gbuREdfLgAwV4OgSzBmh04eZFkz3Rr0gwGj9Tf81:iEI14YZLXMzzILGFkzhr0pGj9o1

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\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.

  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
  • Renames multiple (12627) 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.

  • Credentials from Password Stores: Windows Credential Manager 1 TTPs

    Suspicious access to Credentials History.

  • Drops startup file 1 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
  • Drops desktop.ini file(s) 64 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

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

  • UPX packed file 9 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in Program Files directory 64 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

  • Checks SCSI registry key(s) 3 TTPs 4 IoCs

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

  • Interacts with shadow copies 3 TTPs 1 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of WriteProcessMemory 15 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\2025-03-04_b032ecd86b56a0073d46319c04c22387_makop_ramnit.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-03-04_b032ecd86b56a0073d46319c04c22387_makop_ramnit.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1600
    • C:\Users\Admin\AppData\Local\Temp\2025-03-04_b032ecd86b56a0073d46319c04c22387_makop_ramnit.exe
      "C:\Users\Admin\AppData\Local\Temp\2025-03-04_b032ecd86b56a0073d46319c04c22387_makop_ramnit.exe" n1600
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3372
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3048
      • C:\Windows\system32\vssadmin.exe
        vssadmin delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:1992
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic shadowcopy delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:3740
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {default} bootstatuspolicy ignoreallfailures
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:1832
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {default} recoveryenabled no
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:3432
      • C:\Windows\system32\wbadmin.exe
        wbadmin delete catalog -quiet
        3⤵
        • Deletes backup catalog
        PID:3492
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\readme-warning.txt
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1404
    • C:\Users\Admin\AppData\Local\Temp\2025-03-04_b032ecd86b56a0073d46319c04c22387_makop_ramnit.exe
      "C:\Users\Admin\AppData\Local\Temp\2025-03-04_b032ecd86b56a0073d46319c04c22387_makop_ramnit.exe" n1600
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4728
    • C:\Users\Admin\AppData\Local\Temp\2025-03-04_b032ecd86b56a0073d46319c04c22387_makop_ramnit.exe
      "C:\Users\Admin\AppData\Local\Temp\2025-03-04_b032ecd86b56a0073d46319c04c22387_makop_ramnit.exe" n1600
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4332
    • C:\Users\Admin\AppData\Local\Temp\2025-03-04_b032ecd86b56a0073d46319c04c22387_makop_ramnit.exe
      "C:\Users\Admin\AppData\Local\Temp\2025-03-04_b032ecd86b56a0073d46319c04c22387_makop_ramnit.exe" n1600
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4916
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2332
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3040
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:676
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3280

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\$Recycle.Bin\S-1-5-21-1479699283-3000499823-2337359760-1000\desktop.ini

      Filesize

      356B

      MD5

      5e3e7eaaa143d9236ce4489a3e7b5f31

      SHA1

      1a1f7f5f3c4ece133551bd600de272228c9686e5

      SHA256

      a1b6ea2748ebccd1a24657c7d82e93bf82fccc79cc3bda05b138780f1e302245

      SHA512

      0842da74ffd489fd58a48787f228465495eb8c3bbae3a220d2c9075204617a181c7391f1826b8d1ddbaa74418a5777a964e9d0d2078cc1cc0c909e47e8378b55

    • C:\$Recycle.Bin\S-1-5-21-1479699283-3000499823-2337359760-1000\desktop.ini

      Filesize

      356B

      MD5

      d948e3460b45ed002b2fb9d81dec13d3

      SHA1

      598b6d3004f3da1b095d8b89542516072f2eebe2

      SHA256

      a11698d4d8b675efd8cde6c1a93934e31c31847487b1609a3481fc4b38074ff6

      SHA512

      7769f4b61c49c1f47cc5a010893c6e0c861f95c90fae52aedb08016347abc96316b44fd478ce261168efa0cb2c3201753df1b8a6fd8e69f8ac34ee059460217d

    • C:\$Recycle.Bin\S-1-5-21-1479699283-3000499823-2337359760-1000\desktop.ini

      Filesize

      708B

      MD5

      e6a8f064844b4438ea849963c58715cb

      SHA1

      728dc5cc4bfe2ff31e6b5ce7bbdd2ad1cf243f18

      SHA256

      9ec4d3af3503b765d9927035520903ba65ee8e382dc099ee4294569628f27518

      SHA512

      cc8382d83fd58b7156ae810223b995c4be4221dedbfb5bb48c6f5c04dcee457b2b1baaf4717e729a8ab66b5103e1aa29d55ffcab303cb3d84537a036f914c381

    • C:\$Recycle.Bin\S-1-5-21-1479699283-3000499823-2337359760-1000\desktop.ini

      Filesize

      932B

      MD5

      f8c078bf2b8b45cc61110305738c0fff

      SHA1

      eae73036d633574b8936840602f6545dfa621be4

      SHA256

      0c6ed6dcd2272e5f8810f345ed8af143fa71bc6c572e2b3584080f10c7249689

      SHA512

      98fe98d1f888e18e9ab78a65409cf69e94f19efad7a9a025ded7106f163449ae5c97d391f0139493e9a1a233d12286599d941d1b7d6c11229b03f94c21e2ea84

    • C:\Users\Admin\Desktop\readme-warning.txt

      Filesize

      1KB

      MD5

      3969a092772b5de3679972011f94f476

      SHA1

      8a807f322b60e2d4fadcb9383a38e2cf74932a29

      SHA256

      1532252a2a8413b9c30c2a9f960b4f0504432233c040d6b5725cd4a04dcc5226

      SHA512

      4d1c1eaa99718c9918c486d1b37c62ff43ab91ff13d5cfb29cc37d7a4e94eedec32e3e90d1e7cf1a4c3b09cd9bc8a079b74e811fa39a42483383b012c549f68b

    • memory/1600-5048-0x0000000000400000-0x000000000044B000-memory.dmp

      Filesize

      300KB

    • memory/1600-0-0x0000000000400000-0x000000000044B000-memory.dmp

      Filesize

      300KB

    • memory/3372-5661-0x0000000000400000-0x000000000044B000-memory.dmp

      Filesize

      300KB

    • memory/3372-13486-0x0000000000400000-0x000000000044B000-memory.dmp

      Filesize

      300KB

    • memory/4332-25455-0x0000000000400000-0x000000000044B000-memory.dmp

      Filesize

      300KB

    • memory/4332-25456-0x0000000000400000-0x000000000044B000-memory.dmp

      Filesize

      300KB

    • memory/4728-25382-0x0000000000400000-0x000000000044B000-memory.dmp

      Filesize

      300KB

    • memory/4728-25383-0x0000000000400000-0x000000000044B000-memory.dmp

      Filesize

      300KB

    • memory/4916-25512-0x0000000000400000-0x000000000044B000-memory.dmp

      Filesize

      300KB