Overview

overview

10

Static

static

10

2026-04-07...at.exe

windows10-2004-x64

10

2026-04-07...at.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    140s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    07/04/2026, 03:55

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General

  • Target
    2026-04-07_814abfb4f3b6895cbadb2c4088a13dcd_amadey_cobalt-strike_elex_luca-stealer_lynx_njrat.exe
  • Size 889KB
  • Sample260407-eha9rsf12j
  • SHA256 1986df67294165777d9c689545bdcfe5ed05af667a032cd3a74540db9c2e7ef8
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defense_evasiondiscoveryexecutionblackbastaimpactransomware

Malware Config

Extracted

Path

  • C:\Program Files (x86)\instructions_read_me.txt

  • blackbasta

Ransom Note
  • ATTENTION! Your network has been breached and all data was encrypted. Please contact us at: https://bastad5huzwkepdixedg2gekg7jk22ato24zyllp6lnjx7wdtyctgvyd.onion/ Login ID: 7ab0444a-f73c-4ab0-b3a9-4c2ead84ecf1 *!* To access .onion websites download and install Tor Browser at: https://www.torproject.org/ (Tor Browser is not related to us) *!* To restore all your PCs and get your network working again, follow these instructions: - Any attempts to modify, decrypt or rename the files will lead to its fatal corruption. It doesn't matter, who are trying to do this, either it will be your IT guys or a recovery agency. Please follow these simple rules to avoid data corruption: - Do not modify, rename or delete files. Any attempts to modify, decrypt or rename the files will lead to its fatal corruption. - Do not hire a recovery company. They can't decrypt without the key. They also don't care about your business. They believe that they are good negotiators, but it is not. They usually fail. So speak for yourself. Waiting you in a chat.
URLs

  • https://bastad5huzwkepdixedg2gekg7jk22ato24zyllp6lnjx7wdtyctgvyd.onion/

Signatures

  • Black Basta

    A ransomware family targeting Windows and Linux ESXi first seen in February 2022.

    ransomwareblackbasta
  • Blackbasta family
    blackbasta
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • Renames multiple (6826) files with added filename extension

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

    ransomware
  • 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
  • Interacts with shadow copies 3 TTPs 1 IoCs

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

    ransomware
  • Modifies registry class 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs
  • 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\2026-04-07_814abfb4f3b6895cbadb2c4088a13dcd_amadey_cobalt-strike_elex_luca-stealer_lynx_njrat.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-07_814abfb4f3b6895cbadb2c4088a13dcd_amadey_cobalt-strike_elex_luca-stealer_lynx_njrat.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:5100
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4220
      • C:\Windows\system32\vssadmin.exe
        C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:5304
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3280

Network

        MITRE ATT&CK Enterprise v16

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        Downloads

        instructions_read_me.txt
        • Path C:\Program Files (x86)\instructions_read_me.txt
        • Size 1KB
        • SHA256 05a80265a3d9212592fbc9415b0a88b6e202fa258c1fde881c70f6f03b8cb817
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        memory/5100-1479-0x00000000017E0000-0x000000000185A000-memory.dmp
        Download