Overview

overview

10

Static

static

10

Umbral.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    Umbral.exe
  • Size 232KB
  • Sample240831-2d1eesygrh
  • SHA256 183ef3c129d5ae9cc4070d9f1c2f276fe2ee4f72b9a1498c7f88d808e9f65a92
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
umbralcredential_accessexecutionspywarestealer

Malware Config

Extracted

Family

  • umbral

C2

  • https://discord.com/api/webhooks/1279568429354844182/gSnzh1xY7wMGz_YPr9a4ZZj2EtDdemR6YarKMztp7mGHc1jyKMJVL68a_kJvpSVi8rKV

Targets

    • Target
      Umbral.exe
    • Size 232KB
    • SHA256 183ef3c129d5ae9cc4070d9f1c2f276fe2ee4f72b9a1498c7f88d808e9f65a92
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    umbralcredential_accessexecutionspywarestealer

    • 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

      Using powershell.exe command.

      execution

    • Drops file in Drivers directory

    • 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