General

  • Target

    b8abb5bc1900792f7c93c0322f1d43ab6125496e2c1ea27b2a91eab4e9197e28exe.exe

  • Size

    290KB

  • Sample

    231207-yhplyagd8t

  • MD5

    61f324ac097a2450523b51244f9eb998

  • SHA1

    88d92474159df473a08d4c3efdefce531a9a1ed7

  • SHA256

    b8abb5bc1900792f7c93c0322f1d43ab6125496e2c1ea27b2a91eab4e9197e28

  • SHA512

    532018ff0ad9fc78d0e476a2fe1761d37bb0639dfe0ab5ad9d2fcfa1283c996ae3a051f9c0e49ae3bc0572ffc686223d769a82c219e52666a65870598da401e9

  • SSDEEP

    3072:byr6Iswbjf6ejmrhPn3hrvHQ5za0BVdbVryTk+:vCz6gmrhf3hrn0V52T

Malware Config

Extracted

Family

smokeloader

Botnet

pu10

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

Extracted

Family

risepro

C2

193.233.132.51

Targets

    • Target

      b8abb5bc1900792f7c93c0322f1d43ab6125496e2c1ea27b2a91eab4e9197e28exe.exe

    • Size

      290KB

    • MD5

      61f324ac097a2450523b51244f9eb998

    • SHA1

      88d92474159df473a08d4c3efdefce531a9a1ed7

    • SHA256

      b8abb5bc1900792f7c93c0322f1d43ab6125496e2c1ea27b2a91eab4e9197e28

    • SHA512

      532018ff0ad9fc78d0e476a2fe1761d37bb0639dfe0ab5ad9d2fcfa1283c996ae3a051f9c0e49ae3bc0572ffc686223d769a82c219e52666a65870598da401e9

    • SSDEEP

      3072:byr6Iswbjf6ejmrhPn3hrvHQ5za0BVdbVryTk+:vCz6gmrhf3hrn0V52T

    • 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.

    • PrivateLoader

      PrivateLoader is a downloader sold as a pay-per-install malware distribution service.

    • RisePro

      RisePro stealer is an infostealer distributed by PrivateLoader.

    • 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

    • Loads dropped DLL

    • Modifies file permissions

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • 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 Microsoft Outlook profiles

    • 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.

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks