General

  • Target

    471ad12514f66c86a1560bc3b233b9f286c46e3fb4fc7d3debda864a74fdd8f7

  • Size

    1.9MB

  • Sample

    240325-q81swsch9s

  • MD5

    b3f2dd3e80bb69607cb632e8d91c68f9

  • SHA1

    14ca3b89c6eacccf014045a26e62750c3d20689c

  • SHA256

    471ad12514f66c86a1560bc3b233b9f286c46e3fb4fc7d3debda864a74fdd8f7

  • SHA512

    6a124eae24b603c43d9f9eb4c63b9eda3fb21189a69f32ab06e40de975ff1c14a749e1cd235edab973647aa4b09808b70bd7c2a1d1d80328a1531ae8b815ec04

  • SSDEEP

    49152:NuetGYUVAgyd1wKjynZPKFZa2CchmW9OAP:8eARE1wK6KnUYLP

Malware Config

Extracted

Family

amadey

Version

4.18

C2

http://193.233.132.56

Attributes
  • install_dir

    09fd851a4f

  • install_file

    explorha.exe

  • strings_key

    443351145ece4966ded809641c77cfa8

  • url_paths

    /Pneh2sXQk0/index.php

rc4.plain

Extracted

Family

stealc

C2

http://185.172.128.209

Attributes
  • url_path

    /3cd2b41cbde8fc9c.php

Targets

    • Target

      471ad12514f66c86a1560bc3b233b9f286c46e3fb4fc7d3debda864a74fdd8f7

    • Size

      1.9MB

    • MD5

      b3f2dd3e80bb69607cb632e8d91c68f9

    • SHA1

      14ca3b89c6eacccf014045a26e62750c3d20689c

    • SHA256

      471ad12514f66c86a1560bc3b233b9f286c46e3fb4fc7d3debda864a74fdd8f7

    • SHA512

      6a124eae24b603c43d9f9eb4c63b9eda3fb21189a69f32ab06e40de975ff1c14a749e1cd235edab973647aa4b09808b70bd7c2a1d1d80328a1531ae8b815ec04

    • SSDEEP

      49152:NuetGYUVAgyd1wKjynZPKFZa2CchmW9OAP:8eARE1wK6KnUYLP

    • Amadey

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

    • Glupteba

      Glupteba is a modular loader written in Golang with various components.

    • Glupteba payload

    • Stealc

      Stealc is an infostealer written in C++.

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

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Modifies Windows Firewall

    • 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 WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • Reads local data of messenger clients

      Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

    • 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.

    • UPX packed file

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

    • 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

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Manipulates WinMonFS driver.

      Roottkits write to WinMonFS to hide directories/files from being detected.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks