Overview

overview

10

Static

static

3

winprofile

windows7-x64

9

winprofile

windows10-1703-x64

10

Analysis

  • max time kernel
    164s
  • max time network
    126s
  • 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

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    b32daf27aa392d26bdf5faafbaae6b21cd6c918d461ff59f548a73d447a96dd9.exe

  • Size

    5.8MB

  • MD5

    e7d5201947829fd265a0356771fbeb63

  • SHA1

    6c90b89aad04f38c584fcee1d47fed9cd79f8ef1

  • SHA256

    b32daf27aa392d26bdf5faafbaae6b21cd6c918d461ff59f548a73d447a96dd9

  • SHA512

    e3442ecebdb29ea722142f9a1a533b8fe6297b9e6923cf290cc3850287a864059bb17709ee03ce134f36d5e333a36a9c37345507a7f9fbd007ca8fbf89abce31

  • SSDEEP

    98304:yfUTMfcltw7HaqKN2A2lO8azKowdWr6z3h4q1KIqoS4aMTlcMmbFLOAkGkzdnEVk:2UiEsGE/r1R4q8IqoSP4cMmbFLOyomFI

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: 71ff8714-d2ca-417c-a73d-ec34d289178a *!* 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
  • 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
  • Drops file in Windows directory 1 IoCs
  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

    ransomware
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies registry class 21 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
    ransomware
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 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\b32daf27aa392d26bdf5faafbaae6b21cd6c918d461ff59f548a73d447a96dd9.exe
    "C:\Users\Admin\AppData\Local\Temp\b32daf27aa392d26bdf5faafbaae6b21cd6c918d461ff59f548a73d447a96dd9.exe"
    1⤵
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:420
    • 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:2896
      • C:\Windows\System32\vssadmin.exe
        C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:3000
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c start /MAX notepad.exe c:\instructions_read_me.txt
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1348
      • C:\Windows\SysWOW64\notepad.exe
        notepad.exe c:\instructions_read_me.txt
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:1396
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1164
  • C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe
    "C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe" -ServerName:CortanaUI.AppXa50dqqa5gqv4a428c9y1jjw7m3btvepj.mca
    1⤵
    • Drops file in Windows directory
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:3916

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    1KB

    MD5

    6afeff98a2aa3f4404a8a915a8531fc3

    SHA1

    788bc5e201c38276b0a2878d4cacdd4cf08ab248

    SHA256

    744b2fa15e5676fa2a729b23a73534db2a426a22c3eadbc61409cd6936dee9fc

    SHA512

    4e355389461e865070dff850b432198afdd0d3a685098a99032d51e425a5b33ed23425a74bac8d94bd30cc766e3516f0d778983b7c498846d5dc07188fd0fa12

    Download Submit

  • memory/420-16-0x0000000002E50000-0x0000000002F33000-memory.dmp

    Filesize

    908KB

    Download

  • memory/420-11-0x0000000002E50000-0x0000000002F33000-memory.dmp

    Filesize

    908KB

    Download

  • memory/420-10-0x0000000002E50000-0x0000000002F33000-memory.dmp

    Filesize

    908KB

    Download

  • memory/420-14-0x0000000002E50000-0x0000000002F33000-memory.dmp

    Filesize

    908KB

    Download

  • memory/420-2-0x0000000002E50000-0x0000000002F33000-memory.dmp

    Filesize

    908KB

    Download

  • memory/420-12-0x0000000002E50000-0x0000000002F33000-memory.dmp

    Filesize

    908KB

    Download

  • memory/420-9-0x0000000002E50000-0x0000000002F33000-memory.dmp

    Filesize

    908KB

    Download

  • memory/420-0-0x0000000002E50000-0x0000000002F33000-memory.dmp

    Filesize

    908KB

    Download

  • memory/420-13-0x0000000002E50000-0x0000000002F33000-memory.dmp

    Filesize

    908KB

    Download

  • memory/420-15-0x0000000002E50000-0x0000000002F33000-memory.dmp

    Filesize

    908KB

    Download

  • memory/420-13568-0x0000000002E50000-0x0000000002F33000-memory.dmp

    Filesize

    908KB

    Download

  • memory/420-13555-0x0000000002E50000-0x0000000002F33000-memory.dmp

    Filesize

    908KB

    Download

  • memory/420-2864-0x0000000002E50000-0x0000000002F33000-memory.dmp

    Filesize

    908KB

    Download

  • memory/3916-1283-0x000002A0446B0000-0x000002A0446D0000-memory.dmp

    Filesize

    128KB

    Download

  • memory/3916-1232-0x000002A044490000-0x000002A0444B0000-memory.dmp

    Filesize

    128KB

    Download

  • memory/3916-1217-0x000002A043C70000-0x000002A043D70000-memory.dmp

    Filesize

    1024KB

    Download