Overview

overview

10

Static

static

10

2024-09-16...op.exe

windows7-x64

10

2024-09-16...op.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-09-2024 20:22

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General

  • Target

    2024-09-16_991ec1c9fb54f4e3033bc300941b9dc9_makop.exe

  • Size

    42KB

  • MD5

    991ec1c9fb54f4e3033bc300941b9dc9

  • SHA1

    b0b4bb291ce9dfb9324d37e0dc8fbf1d16fc961e

  • SHA256

    427906c9063ebbc38eca3994bd081c3d218a8527c5066cca97d9dea09e29516e

  • SHA512

    00fbd919187624e16df55a4c6df975c205842c80b5008ff76d63e921044ad479acdbe13f3e2c88a6581a37717ca0f67e54907f70f24e539ae383e68a2543ab40

  • SSDEEP

    768:xu1oK+G3Vi1RzarwLc+D/CIJX+ZpFywgZuIOPzDjskYd5+BtwaIRQ:xGi1FaQD9duIm4tgBOaYQ

Score
10/10
defense_evasiondiscoveryexecutionimpactransomware

Malware Config

Extracted

Path

C:\Program Files\Common Files\microsoft shared\ClickToRun\+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] .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 (3378) 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\2024-09-16_991ec1c9fb54f4e3033bc300941b9dc9_makop.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-16_991ec1c9fb54f4e3033bc300941b9dc9_makop.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2280
    • C:\Users\Admin\AppData\Local\Temp\2024-09-16_991ec1c9fb54f4e3033bc300941b9dc9_makop.exe
      "C:\Users\Admin\AppData\Local\Temp\2024-09-16_991ec1c9fb54f4e3033bc300941b9dc9_makop.exe" n2280
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1004
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1896
      • C:\Windows\system32\vssadmin.exe
        vssadmin delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:1444
      • C:\Windows\system32\wbadmin.exe
        wbadmin delete catalog -quiet
        3⤵
        • Deletes backup catalog
        PID:2608
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic shadowcopy delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2376
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2992
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1556
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:1688
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:816
    • 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:2264

    Network

    MITRE ATT&CK Enterprise v15

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    Downloads

    • C:\Program Files\Common Files\microsoft shared\ClickToRun\+README-WARNING+.txt
      Filesize

      1KB

      MD5

      6d380da27a021d3d5bb792286d526dee

      SHA1

      b2435a067af765fa81298c70bc607ee0d3e7b295

      SHA256

      7109625fe687fb777aa8fa4a2943e98d6433837610429b2c2f460448aa75a23b

      SHA512

      94991a3b016552a979ca5797c910195b86d898cf84bc4385b5f500eb6faef819e4806818ed71b2195adb6735e84be38a65fcec518913845061421e40f9a27e1b

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