Overview

overview

10

Static

static

84895601f4...le.exe

windows7_x64

10

84895601f4...le.exe

windows10_x64

10

Analysis

  • max time kernel
    49s
  • max time network
    113s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    26-07-2021 12:39

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General

  • Target

    84895601f472240234162ba7ac9a7b0952df8268c93f6ab385eeccb5aea7d120.sample.exe

  • Size

    40KB

  • MD5

    de7c8dfe5e8050571ef394f0202edc82

  • SHA1

    a03468953575a4730689d6d05558792150125ac8

  • SHA256

    84895601f472240234162ba7ac9a7b0952df8268c93f6ab385eeccb5aea7d120

  • SHA512

    874643de409b9c4e7fcb5c8727db3ab060a195b2411625e66c7e2fe5e03eecc5c21fd07e82f7edc38792a614f57e1a7e195d535057bec09cf256aafae9892bd4

Score
10/10
babukransomware

Malware Config

Extracted

Path

C:\Boot\How To Restore Your Files.txt

Ransom Note
############## [ babyk ransomware ] ############## * What happend? ---------------------------------------------- Your computers and servers are encrypted, backups are deleted from your network and copied. We use strong encryption algorithms, so you cannot decrypt your data without us. But you can restore everything by purchasing a special program from us - a universal decoder. This program will restore your entire network. Follow our instructions below and you will recover all your data. If you continue to ignore this for a long time, we will start reporting the hack to mainstream media and posting your data to the dark web. * What guarantees? ---------------------------------------------- We value our reputation. If we do not do our work and liabilities, nobody will pay us. This is not in our interests. All our decryption software is perfectly tested and will decrypt your data. We will also provide support in case of problems. We guarantee to decrypt one file for free. Go to the site and contact us. * What information compromised? ---------------------------------------------- We copied many data from your internal network, here are some proofs (private link): http://gtmx56k4hutn3ikv.onion/?JJ2Sdd8mtObS8tBQv5mM For additional confirmations, please chat with us/ In cases of ignoring us, the information will be released to the public in blog http://gtmx56k4hutn3ikv.onion/ * How to contact us? ---------------------------------------------- 1) Download for browser: https://www.torproject.org/download/ 2) Open it 3) Follow this link in tor browser: http://babukq4e2p4wu4iq.onion/login.php?id=UDFfRZirMNY2ENxMGJ9xczl3CTcie3
URLs

http://gtmx56k4hutn3ikv.onion/?JJ2Sdd8mtObS8tBQv5mM

http://gtmx56k4hutn3ikv.onion/

http://babukq4e2p4wu4iq.onion/login.php?id=UDFfRZirMNY2ENxMGJ9xczl3CTcie3

Signatures

  • Babuk Locker

    RaaS first seen in 2021 initially called Vasa Locker.

    ransomwarebabuk
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Modifies extensions of user files 10 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Drops startup file 1 IoCs
  • Enumerates connected drives 3 TTPs 24 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Interacts with shadow copies 2 TTPs 2 IoCs

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

    ransomware
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\84895601f472240234162ba7ac9a7b0952df8268c93f6ab385eeccb5aea7d120.sample.exe
    "C:\Users\Admin\AppData\Local\Temp\84895601f472240234162ba7ac9a7b0952df8268c93f6ab385eeccb5aea7d120.sample.exe"
    1⤵
    • Modifies extensions of user files
    • Drops startup file
    • Enumerates connected drives
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: RenamesItself
    • Suspicious use of WriteProcessMemory
    PID:856
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:852
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:1072
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3232
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:1040
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:200
  • C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe
    "C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe" -ServerName:App.AppXtk181tbxbce2qsex02s8tw7hfxa9xb3t.mca
    1⤵
    • Suspicious use of SetWindowsHookEx
    PID:3868

Network

MITRE ATT&CK Enterprise v6

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