Analysis

  • max time kernel
    4294182s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20220311-en
  • submitted
    10-04-2022 03:42

General

  • Target

    c94a81fdf688d220827320e88cc0b89af8690142abe5c602131b6659297c7d24.exe

  • Size

    308KB

  • MD5

    75a6690d9a4a89bd0cf6ceebcffd3c41

  • SHA1

    678ddaaaa14fcd7b90bfa2b673221378e032fdbf

  • SHA256

    c94a81fdf688d220827320e88cc0b89af8690142abe5c602131b6659297c7d24

  • SHA512

    37273a97459d3624e77c8b586acbed6836a88d9c4975625a654f55eccdabeb9d4dcd55598779ec7bfe3e682e725597468ef59fee9e18263a3a00c86bf962e526

Score
10/10

Malware Config

Extracted

Path

C:\How To Restore Your Files.txt

Ransom Note --------------- Hello --------------- *** By BABUCK LOCKER *** Your computers and servers are encrypted, and backups are deleted. We use strong encryption algorithms, so no one has yet been able to decrypt their files without our participation. The only way to decrypt your files is to purchase a universal decoder from us, which will restore all the encrypted data and your network. Follow our instructions below, and you will recover all your data: 1) Pay 0,006 bitcoin to 1E6cvG6iEbufvYspsDa3XQ3WJgEMvRTm9i 2) Send us message with transaction id to babuckransom@tutanota.com 3) Launch decryptor.exe, which our support will send you through email What guarantees? ----------------------------------------------------- We value our reputation. If we will not do our work and liabilities, nobody will pay us. This is not in our interests. All our decryption software is tested by time and will decrypt all your data. ----------------------------------------------------- !!! DO NOT TRY TO RECOVER ANY FILES YOURSELF. WE WILL NOT BE ABLE TO RESTORE THEM!!!
Emails

babuckransom@tutanota.com

Wallets

1E6cvG6iEbufvYspsDa3XQ3WJgEMvRTm9i

Signatures 9

  • Babuk Locker

    RaaS first seen in 2021 initially called Vasa Locker.

  • Deletes shadow copies ⋅ 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies extensions of user files ⋅ 6 IoCs

    Ransomware generally changes the extension on encrypted files.

  • 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.

  • Suspicious behavior: EnumeratesProcesses ⋅ 1 IoCs
  • Suspicious use of AdjustPrivilegeToken ⋅ 3 IoCs
  • Suspicious use of WriteProcessMemory ⋅ 14 IoCs

Processes 6

  • C:\Users\Admin\AppData\Local\Temp\c94a81fdf688d220827320e88cc0b89af8690142abe5c602131b6659297c7d24.exe
    "C:\Users\Admin\AppData\Local\Temp\c94a81fdf688d220827320e88cc0b89af8690142abe5c602131b6659297c7d24.exe"
    Modifies extensions of user files
    Enumerates connected drives
    Suspicious behavior: EnumeratesProcesses
    Suspicious use of WriteProcessMemory
    PID:1968
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      Suspicious use of WriteProcessMemory
      PID:1992
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        Interacts with shadow copies
        PID:892
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      Suspicious use of WriteProcessMemory
      PID:1836
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        Interacts with shadow copies
        PID:1800
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    Suspicious use of AdjustPrivilegeToken
    PID:792

Network

MITRE ATT&CK Matrix

Collection

    Command and Control

      Credential Access

        Defense Evasion

        Execution

          Exfiltration

            Initial Access

              Lateral Movement

                Persistence

                  Privilege Escalation

                    Replay Monitor

                    00:00 00:00

                    Downloads

                    • memory/892-60-0x0000000000000000-mapping.dmp
                    • memory/1800-62-0x0000000000000000-mapping.dmp
                    • memory/1836-61-0x0000000000000000-mapping.dmp
                    • memory/1968-54-0x00000000005EB000-0x00000000005FC000-memory.dmp
                    • memory/1968-55-0x0000000076BC1000-0x0000000076BC3000-memory.dmp
                    • memory/1968-57-0x0000000000220000-0x0000000000235000-memory.dmp
                    • memory/1968-56-0x00000000005EB000-0x00000000005FC000-memory.dmp
                    • memory/1968-58-0x0000000000400000-0x0000000000455000-memory.dmp
                    • memory/1992-59-0x0000000000000000-mapping.dmp