Overview

overview

10

Static

static

10

2025-04-12...op.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    137s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/04/2025, 13:23

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General

  • Target

    2025-04-12_906d094b8f66b5b441d46ff1ad95ad10_elex_makop.exe

  • Size

    42KB

  • MD5

    906d094b8f66b5b441d46ff1ad95ad10

  • SHA1

    84e73c4d45fa3630f9b71f7af35bbf866a7c604c

  • SHA256

    d05e8d7ba3307bea3a19128332698b806e2320507a57f4a08b808e658d94854d

  • SHA512

    306bfb482fd4e31e375a0ab146f76a93800fccf543ef8bbef561d57bd82ae0fdfb3d43be48d36f036873d99d994513ec9c5fa3d80983abd979c51520ecff4998

  • SSDEEP

    768:NO1oR/AdVS1RzK4wbs+D/SIJX+ZZ1SQQwZuIOPzDCLhAcml0H5c/4UAEEjyjpi:NYS1FKnDtkuImC9Acmls5IYAM

Score
10/10
defense_evasiondiscoveryexecutionimpactransomware

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\scoped_dir4916_319883562\CRX_INSTALL\_locales\be\+README-WARNING+.txt

Ransom Note
::: Greetings ::: Little FAQ: .1. Q: Whats Happen? A: Your files have been encrypted. 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 us. .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 mailboxes: [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

  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • Renames multiple (3400) files with added filename extension

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

    ransomware
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

    ransomware
  • Drops file in System32 directory 6 IoCs
  • Drops file in Program Files directory 64 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

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

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

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Interacts with shadow copies 3 TTPs 1 IoCs

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

    ransomware
  • Modifies data under HKEY_USERS 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 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.

    persistence
  • Uses Volume Shadow Copy service COM API

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

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\2025-04-12_906d094b8f66b5b441d46ff1ad95ad10_elex_makop.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-04-12_906d094b8f66b5b441d46ff1ad95ad10_elex_makop.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2444
    • C:\Users\Admin\AppData\Local\Temp\2025-04-12_906d094b8f66b5b441d46ff1ad95ad10_elex_makop.exe
      "C:\Users\Admin\AppData\Local\Temp\2025-04-12_906d094b8f66b5b441d46ff1ad95ad10_elex_makop.exe" n2444
      2⤵
      • System Location Discovery: System Language Discovery
      PID:228
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4484
      • C:\Windows\system32\vssadmin.exe
        vssadmin delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:548
      • C:\Windows\system32\wbadmin.exe
        wbadmin delete catalog -quiet
        3⤵
        • Deletes backup catalog
        PID:3232
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic shadowcopy delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1292
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:5432
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:376
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:3264
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5468
    • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
      "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
      1⤵
      • Drops file in System32 directory
      • Checks processor information in registry
      • Enumerates system info in registry
      • Modifies data under HKEY_USERS
      • Suspicious use of SetWindowsHookEx
      PID:4356

    Network

    MITRE ATT&CK Enterprise v16

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\scoped_dir4916_319883562\CRX_INSTALL\_locales\be\+README-WARNING+.txt
      Filesize

      1KB

      MD5

      71b21ec231266fd6a850068ea60867b9

      SHA1

      a4ef11fcc09124a0a87508dac419a1497ba53aa8

      SHA256

      d4a68e1d1de00b8aae8ba62d6c9646e2036d2dfa17382c464402cf9c119e0f1f

      SHA512

      6e33d358bfe412dc50a88c1fafe4d701cb9b48c964b17fb1f060a2d4b441729f65e2ef9d38114033ad17fe016047f0d6676b46fdc92477ef916c98f93b377ff3

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