Overview

overview

10

Static

static

3

15d891d682...39.exe

windows7-x64

10

Analysis

  • max time kernel
    58s
  • max time network
    4s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    21-12-2024 15:57

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General

  • Target

    15d891d682d73514401f65f0bd769d27f777462c31c7815e1a0fe119a41ea739.exe

  • Size

    649KB

  • MD5

    90e69700399e2b75d7e09b84185640c7

  • SHA1

    cce479af71b73f1d0c5226b87894aeb5c24aeed2

  • SHA256

    15d891d682d73514401f65f0bd769d27f777462c31c7815e1a0fe119a41ea739

  • SHA512

    5bdcecad4af71631278e7d00fd9056a6b62be6212e7f7e00d75e08207ca41fbe3e075ca0699cc963039deb5190225bde16a5522b5ca6c7d943e3b5df80750ceb

  • SSDEEP

    12288:4ofNGhJvRjVUWEFvScnf316z/OF/NqDxf4qLO1BhwTkwJcqea4VOF:4ofNGhJvRJGf3oJ9f4qLqBhsJveg

Score
10/10
blackbastapersistenceransomware

Malware Config

Extracted

Path

C:\Program Files\instructions_read_me.txt

Family

blackbasta

Ransom Note
Hello! If you are reading this, it means we have encrypted your data and took your files. DO NOT PANIC! Yes, this is bad news, but we will have a good ones as well. YES, this is entirely fixable! Our name is BlackBasta Syndicate, and we are the largest, most advanced, and most prolific organized group currently existing. We are the ultimate cyber tradecraft with a credential record of taking down the most advanced, high-profile, and defended companies one can ever imagine. You can Google us later; what you need to know now is that we are business people just like you. We have your data and encrypted your files, but in less than an hour, we can put things back on track: if you pay for our recovery services, you get a decryptor, the data will be deleted from all of our systems and returned to you, and we will give you a security report explaining how we got you. Please contact us at: https://bastad5huzwkepdixedg2gekg7jk22ato24zyllp6lnjx7wdtyctgvyd.onion/ Login: 94351e51-1b7a-4b52-8170-a8c42c418cac This is a link to a secure chat. We will talk there. Inside that chat, we will share a second designated link that only your special team will be able to see. For now, think about the following. This incident hits your network and is stopping you from operating properly. The sooner you get back on track, the better it is. See you in the secure 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
  • Renames multiple (1807) files with added filename extension

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

    ransomware
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Drops file in Program Files directory 64 IoCs
  • Modifies registry class 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\15d891d682d73514401f65f0bd769d27f777462c31c7815e1a0fe119a41ea739.exe
    "C:\Users\Admin\AppData\Local\Temp\15d891d682d73514401f65f0bd769d27f777462c31c7815e1a0fe119a41ea739.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Program Files directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2336
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
      2⤵
        PID:1840

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Program Files\instructions_read_me.txt
      Filesize

      1KB

      MD5

      474f9f8e33d15810aeae38d13b7022f2

      SHA1

      855c8e02a569de0af43349ebf8709f9085f7e1a4

      SHA256

      a2d05305ced99c19bcf8ee2b9bf0de7436738efa4c5113a1fba4157ab3360c66

      SHA512

      5aea1d996d13359c8a9b17c5c2b43e3443daed6d66774dbc3cfe6324b17dee74725df67c92b5e97c98a3c2b9a0e4a014f6eec7e028ae60c7daed9c53883f923a

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