Overview

overview

10

Static

static

1

URLScan

urlscan

1

https://workupload.c...

windows10-2004-x64

10

Sharing

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General

  • Target

    https://workupload.com/file/3bLUanW4HKE

  • Sample

    240809-zkkw7sybqj

Score
10/10
umbralcredential_accessdiscoveryexecutionspywarestealer

Malware Config

Targets

    • Target

      https://workupload.com/file/3bLUanW4HKE

    Score
    10/10
    umbralcredential_accessdiscoveryexecutionspywarestealer

    • Detect Umbral payload

    • Umbral

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

      stealerumbral

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

      credential_accessstealer

    • Command and Scripting Interpreter: PowerShell

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

      execution

    • Drops file in Drivers directory

    • Checks computer location settings

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

    • Executes dropped EXE

    • Reads user/profile data of web browsers

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

      spywarestealer

    • 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.

    behavioral1

MITRE ATT&CK Enterprise v15

Tasks