Overview

overview

10

Static

static

10

Stealer.exe

windows7-x64

10

Stealer.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    Stealer.exe
  • Size 227KB
  • Sample240616-m545csvcml
  • SHA256 3aa5fd9be59e523761738140b7a5906a3672a3b75827dad09911e3280f98680d
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
umbralexecutionspywarestealer

Malware Config

Extracted

Family

  • umbral

C2

  • https://discord.com/api/webhooks/1251854334958768129/Qc0gSKGki_m9TD54GA864n0n2l78BtMFU8dE4edCHdyQKtk6l_zlVzuyD5jVgzOL3fTo

Targets

    • Target
      Stealer.exe
    • Size 227KB
    • SHA256 3aa5fd9be59e523761738140b7a5906a3672a3b75827dad09911e3280f98680d
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    umbralexecutionspywarestealer

    • Detect Umbral payload

    • Umbral

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

      stealerumbral

    • 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

    • Deletes itself

    • 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.

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks