Overview

overview

10

Static

static

3

winprofile

windows7-x64

1

winprofile

windows10-1703-x64

10

Analysis

  • max time kernel
    242s
  • max time network
    305s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    14-05-2024 05:00

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General

  • Target

    723d1cf3d74fb3ce95a77ed9dff257a78c8af8e67a82963230dd073781074224.exe

  • Size

    1.4MB

  • MD5

    6441d7260944bcedc5958c5c8a05d16d

  • SHA1

    46257982840493eca90e051ff1749e7040895584

  • SHA256

    723d1cf3d74fb3ce95a77ed9dff257a78c8af8e67a82963230dd073781074224

  • SHA512

    af88fd3a0a2728c811be524feee575d8d2d9623b7944021c83173e40dbec6b1fbe7bea64dcdd8f1dbebc7d8df76b40e5c9647e2586316ea46ceb191ebcf14d89

  • SSDEEP

    24576:1p2gwjk6ikYhJ9lvGnYZvy48/V33ck7LnBAyldFu8hod/Qodly:1AgxkmvGnYWccjBAwFadRd

Score
10/10
blackbastadefense_evasionexecutionimpactpersistenceransomwarespywarestealer

Malware Config

Extracted

Path

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

Family

blackbasta

Ransom Note
ATTENTION! Your network has been breached and all data was encrypted. Please contact us at: https://bastad5huzwkepdixedg2gekg7jk22ato24zyllp6lnjx7wdtyctgvyd.onion/ Login ID: 26d371a9-efda-4e82-9989-01e292244d65 *!* 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
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • Renames multiple (9654) files with added filename extension

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

    ransomware
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Drops desktop.ini file(s) 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

    ransomware
  • Modifies registry class 3 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
    ransomware
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 11 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\723d1cf3d74fb3ce95a77ed9dff257a78c8af8e67a82963230dd073781074224.exe
    "C:\Users\Admin\AppData\Local\Temp\723d1cf3d74fb3ce95a77ed9dff257a78c8af8e67a82963230dd073781074224.exe"
    1⤵
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4180
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2436
      • C:\Windows\System32\vssadmin.exe
        C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:2488
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c start /MAX notepad.exe c:\instructions_read_me.txt
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1840
      • C:\Windows\SysWOW64\notepad.exe
        notepad.exe c:\instructions_read_me.txt
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:2940
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:220

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    1KB

    MD5

    ba21d49977850f54961ede73b7e9e480

    SHA1

    bd630b3dbe9d7139527c1ffdbb2161e7a9067ae0

    SHA256

    34757273c5e041f07b0352c51cfab2998ab676f3a39bc0f16a1b4d68f3fac4f8

    SHA512

    4bf9be5f41f7258357e838ba94f0aa2b7f17d8fe3266174aaf123156b422c4fb72e4d3fd36db7b2e3e9d13202202d2a6b0ecca06ee2a2a043ce6ad27ffd751e2

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  • memory/4180-0-0x0000000000270000-0x00000000003E5000-memory.dmp

    Filesize

    1.5MB

    Download

  • memory/4180-1-0x0000000000270000-0x00000000003E5000-memory.dmp

    Filesize

    1.5MB

    Download

  • memory/4180-2-0x0000000003160000-0x0000000003244000-memory.dmp

    Filesize

    912KB

    Download

  • memory/4180-4-0x0000000003160000-0x0000000003244000-memory.dmp

    Filesize

    912KB

    Download

  • memory/4180-5225-0x0000000000270000-0x00000000003E5000-memory.dmp

    Filesize

    1.5MB

    Download

  • memory/4180-6384-0x0000000003160000-0x0000000003244000-memory.dmp

    Filesize

    912KB

    Download

  • memory/4180-23165-0x0000000003160000-0x0000000003244000-memory.dmp

    Filesize

    912KB

    Download

  • memory/4180-23186-0x0000000003160000-0x0000000003244000-memory.dmp

    Filesize

    912KB

    Download

  • memory/4180-23185-0x0000000000270000-0x00000000003E5000-memory.dmp

    Filesize

    1.5MB

    Download