Overview

overview

10

Static

static

3

encrypter-...86.exe

windows7-x64

10

encrypter-...86.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    427s
  • max time network
    428s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/10/2024, 13:37

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General

  • Target
    encrypter-windows-gui-x86.exe
  • Size 104KB
  • Sample241021-qws8aaxeqj
  • SHA256 cc0680de960f3e1b727b61a42e59f9c282bd8e41fe20146ed191c7f4bf9283a7
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
burandiscoveryransomware

Malware Config

Extracted

Path

  • C:\Program Files (x86)\README.TXT

  • buran

Ransom Note
  • YOUR FILES ARE ENCRYPTED Your files, documents, photos, databases and other important files are encrypted. You are not able to decrypt it by yourself! The only method of recovering files is to purchase an unique private key. Only we can give you this key and only we can recover your files. To be sure we have the decryptor and it works you can send an email: [email protected] and decrypt one file for free. Before paying you can send us up to 1 file for free decryption. The total size of files must be less than 1Mb (non archived), and files should not contain valuable information. (databases,backups, large excel sheets,sql. etc.) Do you really want to restore your files? Write to email: [email protected] Your personal ID is indicated in the names of the files, before writing a message by email - indicate the name of the ID indicated in the files IN THE SUBJECT OF THE EMAIL Attention! * Do not rename encrypted files. * Do not try to decrypt your data using third party software, it may cause permanent data loss. * Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.

Signatures

  • Buran

    Ransomware-as-a-service based on the VegaLocker family first identified in 2019.

    ransomwareburan
  • Renames multiple (8929) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    ransomware
  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 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\encrypter-windows-gui-x86.exe
    "C:\Users\Admin\AppData\Local\Temp\encrypter-windows-gui-x86.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:1576
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:5000

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        README.TXT
        • Path C:\Program Files (x86)\README.TXT
        • Size 1KB
        • SHA256 ca9d73bacf174d6ddaf7bb91d86e3ebe6864d31ebb7e8138ce5d6b80999e6fb8
        • MD5 SHA1 SHA512
        Submit Download