Overview

overview

10

Static

static

3

2025-12-21...er.exe

windows10-2004-x64

10

2025-12-21...er.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    95s
  • platform
    windows11-21h2_x64
  • resource
    win11-20251223-en
  • resource tags

    arch:x64arch:x86image:win11-20251223-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    21/12/2025, 03:49

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General

  • Target
    2025-12-21_6044330e2df57070dd8ff662df31a039_amadey_coinminer_elex_hellokitty_remcos_smoke-loader.exe
  • Size 145KB
  • Sample251221-edf98aypcs
  • SHA256 b3a0db2cecd8398a2e999b0d397714d27907d605eea945293a0f4d652a76da26
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
discoverycubaransomware

Malware Config

Extracted

Path

  • C:\Program Files\Common Files\microsoft shared\ink\ar-SA\!!FAQ for Decryption!!.txt

  • cuba

Ransom Note
  • Good day. All your files are encrypted. For decryption contact us. Write here [email protected] reserve [email protected] jabber [email protected] We also inform that your databases, ftp server and file server were downloaded by us to our servers. If we do not receive a message from you within three days, we regard this as a refusal to negotiate. Check our platform: http://cuba4mp6ximo2zlo.onion/ * Do not rename encrypted files. * Do not try to decrypt your data using third party software, it may cause permanent data loss. * Do not stop process of encryption, because partial encryption cannot be decrypted.
URLs

  • http://cuba4mp6ximo2zlo.onion/

Signatures

  • Cuba family
    cuba
  • Cuba, COLDDRAW

    Cuba aka COLDDRAW is a ransomware first seen in 2019.

    ransomwarecuba
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

    discovery
  • 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
  • Suspicious behavior: EnumeratesProcesses 18 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2025-12-21_6044330e2df57070dd8ff662df31a039_amadey_coinminer_elex_hellokitty_remcos_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-12-21_6044330e2df57070dd8ff662df31a039_amadey_coinminer_elex_hellokitty_remcos_smoke-loader.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4856
    • C:\Windows\SysWOW64\cmd.exe
      /c del C:\Users\Admin\AppData\Local\Temp\2025-12-21_6044330e2df57070dd8ff662df31a039_amadey_coinminer_elex_hellokitty_remcos_smoke-loader.exe >> NUL
      2⤵
      • System Location Discovery: System Language Discovery
      PID:932

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        stable.identity_helper.exe.manifest
        • Path C:\Program Files (x86)\Microsoft\EdgeCore\139.0.3405.125\identity_proxy\stable.identity_helper.exe.manifest
        • Size 2KB
        • SHA256 6d8dd288e9b9777ddd140d65f4b70c4681940b87527d437824e3f3082800f108
        • MD5 SHA1 SHA512
        Submit Download

        !!FAQ for Decryption!!.txt
        • Path C:\Program Files\Common Files\microsoft shared\ink\ar-SA\!!FAQ for Decryption!!.txt
        • Size 648B
        • SHA256 84277b27957d8a6a63cb93b2e2c90b919d893dc6e95c6b3569388497b429dd65
        • MD5 SHA1 SHA512
        Submit Download