Overview

overview

10

Static

static

3

80c6b04296...in.exe

windows7-x64

10

80c6b04296...in.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    24s
  • max time network
    28s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-12-2024 11:54

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General

  • Target

    80c6b04296ea1c89e4a58d67403dbe72f98691efb0013443c681225dd32b80ed.bin.exe

  • Size

    889KB

  • MD5

    4a2c293b5f4df429344538dc9da65ff5

  • SHA1

    8e5ddb0c85ea4947c2f5d061beaa282b991496e1

  • SHA256

    80c6b04296ea1c89e4a58d67403dbe72f98691efb0013443c681225dd32b80ed

  • SHA512

    f786138365f3faf8b24ec3ae2175094ac40420ce0be3cb4376a125277c0ccad9f7a14123ee9ce3068aa29b2112e764372e94c3325b2d8d95f68a22fbcf44c58b

  • SSDEEP

    24576:yUZSmCmLcNVcfBC2M03mUNeWqsOGlu5I+lEI:jccfB5mUNeWoGQ5plEI

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: 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
  • Blackbasta family
    blackbasta
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • Renames multiple (671) 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
  • 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
  • Opens file in notepad (likely ransom note) 1 IoCs
    ransomware
  • Suspicious use of AdjustPrivilegeToken 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\80c6b04296ea1c89e4a58d67403dbe72f98691efb0013443c681225dd32b80ed.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\80c6b04296ea1c89e4a58d67403dbe72f98691efb0013443c681225dd32b80ed.bin.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4080
    • 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:2232
      • C:\Windows\system32\vssadmin.exe
        C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:2368
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3496
  • C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\instructions_read_me.txt
    1⤵
    • Opens file in notepad (likely ransom note)
    PID:2404

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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