General

  • Target

    spglr64.exe

  • Size

    1.5MB

  • Sample

    240827-2bx7aawfpq

  • MD5

    31f61e9c68256b4cc089b3703c0e2039

  • SHA1

    5ed8cecacc5e6165d43ee91787f72846d2e8ad01

  • SHA256

    8a23e0ccbd2027831ff07599f03b5c1324e080f9415983746de29a6c6ab695fc

  • SHA512

    ae48468132212e4756864fe7ce22d55c35d53cadd482aebabd62ec9d724ea3786879d9364563613140a43fa6c63a6c5cc1ee1775e4e0e9977aee3b748d8a6df1

  • SSDEEP

    24576:yuDXTIGaPhEYzUzA0bOvbKAO1WMbkiSfLAo9Ffze20S4OIsAMWlXl9h2DvpfsTCu:1Djlabwz9Sv61kiQKvS4OUMI4hfaD

Malware Config

Targets

    • Target

      spglr64.exe

    • Size

      1.5MB

    • MD5

      31f61e9c68256b4cc089b3703c0e2039

    • SHA1

      5ed8cecacc5e6165d43ee91787f72846d2e8ad01

    • SHA256

      8a23e0ccbd2027831ff07599f03b5c1324e080f9415983746de29a6c6ab695fc

    • SHA512

      ae48468132212e4756864fe7ce22d55c35d53cadd482aebabd62ec9d724ea3786879d9364563613140a43fa6c63a6c5cc1ee1775e4e0e9977aee3b748d8a6df1

    • SSDEEP

      24576:yuDXTIGaPhEYzUzA0bOvbKAO1WMbkiSfLAo9Ffze20S4OIsAMWlXl9h2DvpfsTCu:1Djlabwz9Sv61kiQKvS4OUMI4hfaD

    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

    • Detect Umbral payload

    • Modifies WinLogon for persistence

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • UAC bypass

    • Umbral

      Umbral stealer is an opensource moduler stealer written in C#.

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

    • Command and Scripting Interpreter: PowerShell

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

    • Disables Task Manager via registry modification

    • Drops file in Drivers directory

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • 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.

MITRE ATT&CK Enterprise v15

Tasks