Overview

overview

10

Static

static

3

b648b7305d...0N.exe

windows7-x64

10

b648b7305d...0N.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    100s
  • max time network
    101s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-08-2024 13:41

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General

  • Target

    b648b7305df49492c44a1280ec2228a0N.exe

  • Size

    885KB

  • MD5

    b648b7305df49492c44a1280ec2228a0

  • SHA1

    ce77bd3224f47ae4b8a04bd4b4be91c3550de294

  • SHA256

    d73f6e240766ddd6c3c16eff8db50794ab8ab95c6a616d4ab2bc96780f13464d

  • SHA512

    2b2bb13bedbce537f28cd58e23e54ace05f717ac1e4e3e4672768a4604e99ce9f35ee377ecd0677713729d066a1f730050d968f4a8dc3cb3cf6f5aaf86cd9737

  • SSDEEP

    24576:pIr/f/LUup7zmMl8tOKnvwYQ62jaeekMEoBmn6o:pMUS2Ml8trnvwYQ62japkMEQS6o

Score
10/10
blackbastadefense_evasiondiscoveryexecutionimpactpersistenceransomware

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: d87708c4-408b-4b02-97b9-071781f49f9c *!* 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
  • Loads dropped DLL 6 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • 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 Internet Explorer settings 1 TTPs 4 IoCs
    adwarespyware
  • Modifies registry class 44 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 5 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\b648b7305df49492c44a1280ec2228a0N.exe
    "C:\Users\Admin\AppData\Local\Temp\b648b7305df49492c44a1280ec2228a0N.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1516
    • 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:740
      • C:\Windows\system32\vssadmin.exe
        C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:3720
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:488
  • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
    "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
    1⤵
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:1304
  • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
    "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
    1⤵
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:3996
  • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
    "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
    1⤵
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:3784

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    1KB

    MD5

    3ea719301224c4cc13063efa4fd91d8f

    SHA1

    f49feaf562566e94c4eca8c151624e9bf39775bf

    SHA256

    6785977e363ed614f778efc564c6b3c5d28473a8c14c895793d0c9c791374f8d

    SHA512

    ac1db933bc28cc419022ff2bbeb15d8ba860a6a00f6dfd9b1f1774596a1ee2cbb09476ca09a2960f9db4b9b78738953a23cd1d332ff44fffa78e610348eef524

    Download Submit

  • C:\Program Files\Microsoft Office\root\Office16\VISSHE.DLL
    Filesize

    279KB

    MD5

    7efcf0111eb7a22aec8410d6a427b328

    SHA1

    d6828e7c4fb2789da55899e69c6197eaf4017b88

    SHA256

    7a83319f41c626818556e406b5b664aa4c102cb851269e9becbe3041bde4368a

    SHA512

    c1526e7bfe3c9f5d9ea9ab0f18d555e01f107ec56123ab83b8677ac24da57e206fb02a0148d2ae08ceba6ec4c10f42a46b0093e2324c0d723f09ec1fd4f43d97

    Download Submit

  • C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\AC\TokenBroker\Cache\fbaf94e759052658216786bfbabcdced1b67a5c2.tbres
    Filesize

    2KB

    MD5

    b5c82b8ed41aaf8b2fa912b626c51094

    SHA1

    104279375fb3798e014313fd9deca8be24c9fa58

    SHA256

    bd17a878d0ff5fd0dd5e6e4d626ec5ed4f59786cb3194185d522d5de40c6e8b8

    SHA512

    0811c19373b6e8afbaa1c4a0d54b6f0afc451bffa4f5186411893eb49665f446ce67a8c30efd442506c8054563e445f054787215d94063633e7310dae2c1bdbc

    Download Submit

  • C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\DeviceSearchCache\AppCache133682893249173731.txt
    Filesize

    75KB

    MD5

    2759a52433a78a92fdb50d142632c9a2

    SHA1

    a0e527138b50a31c76616db2dc21147e2c69061f

    SHA256

    90453482a5a59f0cc88815b1e2583453b8280ced08dae39843734c688d459970

    SHA512

    5d6744e3f03b54464871a01e0cc3f75b283b4d9c289d689ad89c79e20fb0d1acee8327b00fc1e4700b4cb3a1a86968bed8e4672f51a3e9bd67f5c19cbb52a2be

    Download Submit

  • C:\Users\Admin\AppData\Local\Packages\microsoft.windows.search_cw5n1h2txyewy\AC\Microsoft\Internet Explorer\DOMStore\QKJHZK6M\microsoft.windows[1].xml
    Filesize

    96B

    MD5

    c80e07f2e2bce84e8f3380b42ba6bd94

    SHA1

    33e20b05fc67a22ac3f3c214a32057254f97f2e7

    SHA256

    14808d37f1d44780098ddc2af07f7862b3c0c5ab1bfed6b267621e0a332a8bbd

    SHA512

    f5adf8b7bbc1b450249034376f7df69eaf2a7be8e516d511bb82828c19efddbee9247d20e4b4c629b7fe58c9391c31fbf48bdb1b857ca13e5f52b80cb7883f24

    Download Submit

  • memory/3784-2959-0x000001FDAFD60000-0x000001FDAFD80000-memory.dmp

    Filesize

    128KB

    Download

  • memory/3784-2850-0x000001FDAFDA0000-0x000001FDAFDC0000-memory.dmp

    Filesize

    128KB

    Download

  • memory/3784-2845-0x000001FDAEE40000-0x000001FDAEF40000-memory.dmp

    Filesize

    1024KB

    Download

  • memory/3784-2974-0x000001FDB0380000-0x000001FDB03A0000-memory.dmp

    Filesize

    128KB

    Download

  • memory/3996-666-0x0000011B243B0000-0x0000011B243D0000-memory.dmp

    Filesize

    128KB

    Download

  • memory/3996-681-0x0000011B247C0000-0x0000011B247E0000-memory.dmp

    Filesize

    128KB

    Download

  • memory/3996-640-0x0000011B243F0000-0x0000011B24410000-memory.dmp

    Filesize

    128KB

    Download

  • memory/3996-629-0x0000011B23300000-0x0000011B23400000-memory.dmp

    Filesize

    1024KB

    Download