General

  • Target

    4e53a592f8165c2caab6ba1ea77f0508.exe

  • Size

    189KB

  • Sample

    231211-re2nrsaba8

  • MD5

    4e53a592f8165c2caab6ba1ea77f0508

  • SHA1

    179d577d0978900c0d970b5819c7587476a238e9

  • SHA256

    43d7e7f51f3ee88c66a2d6062d82d444c04978b3323c5caf5424585be9c0294c

  • SHA512

    14f990bab517b6d8d3ace2ad118baae824d71574b4e3899905e4ce02e9fef886dccb36408d1dbfe95a199ef0fab026a5f4d2c608d8e305e4c0ab49798c3d69c6

  • SSDEEP

    3072:xJ6tYBLr3i+ww+stiRRUoAmKYrZs8dFAUj75Nq:ytYBLzi+9kRUoApiz

Malware Config

Extracted

Family

smokeloader

Botnet

pub1

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

    .hhuy

  • offline_id

    gG3wF8nDWRqLztkHPAxMzpvNVlmLBMgQKmKiCNt1

  • 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-5zKXJl7cwi 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: 0834ASdw

rsa_pubkey.plain

Extracted

Family

amadey

Version

4.13

C2

http://5.42.65.125

Attributes
  • install_dir

    0de90fc5c7

  • install_file

    Utsysc.exe

  • strings_key

    b34dd8f60e55add4645c4650cc7f7e7e

  • url_paths

    /k92lsA3dpb/index.php

rc4.plain

Extracted

Family

risepro

C2

193.233.132.51

Targets

    • Target

      4e53a592f8165c2caab6ba1ea77f0508.exe

    • Size

      189KB

    • MD5

      4e53a592f8165c2caab6ba1ea77f0508

    • SHA1

      179d577d0978900c0d970b5819c7587476a238e9

    • SHA256

      43d7e7f51f3ee88c66a2d6062d82d444c04978b3323c5caf5424585be9c0294c

    • SHA512

      14f990bab517b6d8d3ace2ad118baae824d71574b4e3899905e4ce02e9fef886dccb36408d1dbfe95a199ef0fab026a5f4d2c608d8e305e4c0ab49798c3d69c6

    • SSDEEP

      3072:xJ6tYBLr3i+ww+stiRRUoAmKYrZs8dFAUj75Nq:ytYBLzi+9kRUoApiz

    • Amadey

      Amadey bot is a simple trojan bot primarily used for collecting reconnaissance information.

    • 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

    • Modifies Windows Firewall

    • .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.

    • 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