General

  • Target

    3b7485ad0c468862f394dd4d1dd0448382020431ba01760b0745e3c256926d0a

  • Size

    230KB

  • Sample

    231208-vr8vdsbcfp

  • MD5

    f047d4dd986b3dc6f374f56dcfc60c6a

  • SHA1

    b65b66ae8a9a76a7e2546f608d40ddede15954af

  • SHA256

    3b7485ad0c468862f394dd4d1dd0448382020431ba01760b0745e3c256926d0a

  • SHA512

    aa04c9ca14b5a791343af6e74b266f70e711e6b78d9037f7e53c198ed244aa681e456df0bcb02e0d11f65530ca4ecf22105e29b74fd36b08439ae1753a9639ab

  • SSDEEP

    3072:dYbOTP4PXcLEiCZdpuoFOUeGpSx0lnwJ7XgRNUL0oGiWHCK:LTPaXmcyoFOGzwVABH

Malware Config

Extracted

Family

smokeloader

Botnet

up3

Extracted

Family

smokeloader

Version

2020

C2

http://host-file-host6.com/

http://host-host-file8.com/

rc4.i32
rc4.i32

Extracted

Family

djvu

C2

http://zexeq.com/test1/get.php

Attributes
  • extension

    .nbzi

  • offline_id

    csCsb6cUvy0iMa6NgGCGH0hSfXQlGjZVEmFVkgt1

  • payload_url

    http://brusuax.com/dl/build2.exe

    http://zexeq.com/files/1/build3.exe

  • ransomnote

    ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-8dGJ2tqlOd Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0832ASdw

rsa_pubkey.plain

Targets

    • Target

      3b7485ad0c468862f394dd4d1dd0448382020431ba01760b0745e3c256926d0a

    • Size

      230KB

    • MD5

      f047d4dd986b3dc6f374f56dcfc60c6a

    • SHA1

      b65b66ae8a9a76a7e2546f608d40ddede15954af

    • SHA256

      3b7485ad0c468862f394dd4d1dd0448382020431ba01760b0745e3c256926d0a

    • SHA512

      aa04c9ca14b5a791343af6e74b266f70e711e6b78d9037f7e53c198ed244aa681e456df0bcb02e0d11f65530ca4ecf22105e29b74fd36b08439ae1753a9639ab

    • SSDEEP

      3072:dYbOTP4PXcLEiCZdpuoFOUeGpSx0lnwJ7XgRNUL0oGiWHCK:LTPaXmcyoFOGzwVABH

    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

    • Detect ZGRat V1

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • ZGRat

      ZGRat is remote access trojan written in C#.

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Downloads MZ/PE file

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Deletes itself

    • Drops startup file

    • Executes dropped EXE

    • Modifies file permissions

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks