General

  • Target

    4815726d666f227c419b824c922e9d2602a286220b960d655726cf36a6c62f2f

  • Size

    289KB

  • Sample

    231206-qykc6afa44

  • MD5

    044d3525103a52ca616a0485d43f6939

  • SHA1

    5ca187b89512b7b5201ce0a007cfed51ac8511e9

  • SHA256

    4815726d666f227c419b824c922e9d2602a286220b960d655726cf36a6c62f2f

  • SHA512

    77d1aa247e3d17eddee831af6cf1dda235d9b18e214b91becefd4aac26ac28c2c54c70d7545b38d4ab2fc78bd2cad34fa9fc7da72a72d06d49dc4c29f9fb49f3

  • SSDEEP

    3072:PJmTsnr8GO48Y7qmBX9ZfrWHs1P5WCVdbVryTe+:gTqA2nUsCQ52T

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

      4815726d666f227c419b824c922e9d2602a286220b960d655726cf36a6c62f2f

    • Size

      289KB

    • MD5

      044d3525103a52ca616a0485d43f6939

    • SHA1

      5ca187b89512b7b5201ce0a007cfed51ac8511e9

    • SHA256

      4815726d666f227c419b824c922e9d2602a286220b960d655726cf36a6c62f2f

    • SHA512

      77d1aa247e3d17eddee831af6cf1dda235d9b18e214b91becefd4aac26ac28c2c54c70d7545b38d4ab2fc78bd2cad34fa9fc7da72a72d06d49dc4c29f9fb49f3

    • SSDEEP

      3072:PJmTsnr8GO48Y7qmBX9ZfrWHs1P5WCVdbVryTe+:gTqA2nUsCQ52T

    • 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.

    • Raccoon

      Raccoon is an infostealer written in C++ and first seen in 2019.

    • Raccoon Stealer V2 payload

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • RedLine payload

    • 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

    • .NET Reactor proctector

      Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

    • Checks BIOS information in registry

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • 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.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks