General

  • Target

    random.exe

  • Size

    2.1MB

  • Sample

    250208-x3msea1mem

  • MD5

    c5ccf77334a5d9892b1797a235e97ae5

  • SHA1

    46d8b41e42c60970d61829a4decd62e1f0209e09

  • SHA256

    866c5b1e9d1b60bc822741681f6eae8e2361e63d42a17bf44add2229044c52d8

  • SHA512

    33644a064a95b6e529203d887418bf19ed47a47b5a80e4f8b18e72f0155aa3c5c5b64c3af3683024d63f2c173a1952262e67ccd605f601858e390b716b0c3311

  • SSDEEP

    49152:AA6wXD5xlFVNNllCt4ZSYKW2EDw0Uqt6bL0W5E0c400J:H6wz5xTNllCt4aTSVU4W5E0T

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

http://185.215.113.16/mine/random.exe

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

reno

C2

http://185.215.113.115

Attributes
  • url_path

    /c4becf79229cb002.php

Extracted

Family

cryptbot

Targets

    • Target

      random.exe

    • Size

      2.1MB

    • MD5

      c5ccf77334a5d9892b1797a235e97ae5

    • SHA1

      46d8b41e42c60970d61829a4decd62e1f0209e09

    • SHA256

      866c5b1e9d1b60bc822741681f6eae8e2361e63d42a17bf44add2229044c52d8

    • SHA512

      33644a064a95b6e529203d887418bf19ed47a47b5a80e4f8b18e72f0155aa3c5c5b64c3af3683024d63f2c173a1952262e67ccd605f601858e390b716b0c3311

    • SSDEEP

      49152:AA6wXD5xlFVNNllCt4ZSYKW2EDw0Uqt6bL0W5E0c400J:H6wz5xTNllCt4aTSVU4W5E0T

    • 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

    • Detects CryptBot payload

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

    • Stealc

      Stealc is an infostealer written in C++.

    • Stealc family

    • Enumerates VirtualBox registry keys

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

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • 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.

    • 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 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.

    • 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.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks