General

  • Target

    file.exe

  • Size

    2.9MB

  • Sample

    241219-k3wdbsxrby

  • MD5

    7944ebe231d464c760a818b34a636cce

  • SHA1

    52bdb9427bd7e9d2e2a75bcf5fc76e0e7819a73b

  • SHA256

    c478f40cfe686bdc076d898a735f2857316a64d8e2d9dc405dde3e0ca8194b7f

  • SHA512

    6435a4f51a6fce88eaf551ca452408fea62d437eb2297a0f6cc2aec94f51813e0c9370744b212217ab4e76016adf892c2d42fb0e6a9d6c8fb3f64c74af9351d7

  • SSDEEP

    49152:/zsb0bm8mmlxTfGeiWPfaIUekCLjWP2vhhrEFxmKtQCh:/zznmkfGeZPfaIUAL6KhELm

Malware Config

Extracted

Family

amadey

Version

4.42

Botnet

9c9aa5

C2

http://185.215.113.43

Attributes
  • install_dir

    abc3bc1985

  • install_file

    skotes.exe

  • strings_key

    8a35cf2ea38c2817dba29a4b5b25dcf0

  • url_paths

    /Zu7JuNko/index.php

rc4.plain

Extracted

Family

stealc

Botnet

stok

C2

http://185.215.113.206

Attributes
  • url_path

    /c4becf79229cb002.php

Extracted

Family

lumma

Extracted

Family

cryptbot

C2

http://home.fivetk5vt.top/hLfzXsaqNtoEGyaUtOMJ1734

Targets

    • Target

      file.exe

    • Size

      2.9MB

    • MD5

      7944ebe231d464c760a818b34a636cce

    • SHA1

      52bdb9427bd7e9d2e2a75bcf5fc76e0e7819a73b

    • SHA256

      c478f40cfe686bdc076d898a735f2857316a64d8e2d9dc405dde3e0ca8194b7f

    • SHA512

      6435a4f51a6fce88eaf551ca452408fea62d437eb2297a0f6cc2aec94f51813e0c9370744b212217ab4e76016adf892c2d42fb0e6a9d6c8fb3f64c74af9351d7

    • SSDEEP

      49152:/zsb0bm8mmlxTfGeiWPfaIUekCLjWP2vhhrEFxmKtQCh:/zznmkfGeZPfaIUAL6KhELm

    • Amadey

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

    • Amadey family

    • CryptBot

      CryptBot is a C++ stealer distributed widely in bundle with other software.

    • Cryptbot family

    • Lumma Stealer, LummaC

      Lumma or LummaC is an infostealer written in C++ first seen in August 2022.

    • Lumma family

    • Modifies Windows Defender Real-time Protection settings

    • Stealc

      Stealc is an infostealer written in C++.

    • Stealc family

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Xmrig family

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • Enumerates VirtualBox registry keys

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

    • XMRig Miner payload

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Downloads MZ/PE file

    • Uses browser remote debugging

      Can be used control the browser and steal sensitive information such as credentials and session cookies.

    • 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.

    • Executes dropped EXE

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • 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.

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Windows security modification

    • 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.

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

MITRE ATT&CK Enterprise v15

Tasks