General

  • Target

    file.exe

  • Size

    1.7MB

  • Sample

    241121-z9pxfsxqhx

  • MD5

    685f2f3ccfb3958f91e4b8e865cd28d5

  • SHA1

    4f9a41e63353f568e1aa31dc9ed97e13c5804d22

  • SHA256

    945f5a2a5fe604802e4aadaa8ef136a11c9a0b89d1c8eff471cf2ddf355aefd4

  • SHA512

    558832974a3b971ba2fedd7b8ef4c0e579fe49ea54dba5109335cc53752d8d7a3eea51c9af133f0f19482a3ec8eac8b1f621532280212fbeabae0e9713148d7b

  • SSDEEP

    49152:iG0Mv/7Fzc/5RqGKySgGfUx6DRLb8RydoGhjCg7IPb:iTM37VmmGdGS6NLbeydDjLkP

Malware Config

Extracted

Family

stealc

Botnet

mars

C2

http://185.215.113.206

Attributes
  • url_path

    /c4becf79229cb002.php

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

xworm

C2

87.120.112.33:8398

Attributes
  • Install_directory

    %LocalAppData%

  • install_file

    svchost.exe

  • telegram

    https://api.telegram.org/bot6673004050:AAEcDfPnnGAswDvyrn9-bkOySVSnbPqLnBU/sendMessage?chat_id=1470436579

Targets

    • Target

      file.exe

    • Size

      1.7MB

    • MD5

      685f2f3ccfb3958f91e4b8e865cd28d5

    • SHA1

      4f9a41e63353f568e1aa31dc9ed97e13c5804d22

    • SHA256

      945f5a2a5fe604802e4aadaa8ef136a11c9a0b89d1c8eff471cf2ddf355aefd4

    • SHA512

      558832974a3b971ba2fedd7b8ef4c0e579fe49ea54dba5109335cc53752d8d7a3eea51c9af133f0f19482a3ec8eac8b1f621532280212fbeabae0e9713148d7b

    • SSDEEP

      49152:iG0Mv/7Fzc/5RqGKySgGfUx6DRLb8RydoGhjCg7IPb:iTM37VmmGdGS6NLbeydDjLkP

    • 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

    • Detect Xworm Payload

    • Detects CryptBot payload

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

    • Modifies Windows Defender Real-time Protection settings

    • Stealc

      Stealc is an infostealer written in C++.

    • Stealc family

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

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

    • 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.

    • Drops startup file

    • 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 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.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks