General

  • Target
    file_out.exe
  • Size 214KB
  • Sample240806-tm21lstdjr
  • SHA256 e1663465701c284caff2ef4acd4649efb4aae0b9d935da69766dca2c019bcd0f
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • umbral

C2
  • https://discord.com/api/webhooks/1087006813825802300/3wUHLU9aZjQ8FO3D6nxGMiHOkFOXdcgPlzsn0-BiZ65SuyOgTOcIixqUH-JEOCn0w142

Targets

    • Target
      file_out.exe
    • Size 214KB
    • SHA256 e1663465701c284caff2ef4acd4649efb4aae0b9d935da69766dca2c019bcd0f
    • MD5 SHA1 SHA512 SSDEEP
    • Detect Umbral payload

    • 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.

    • Command and Scripting Interpreter: PowerShell

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

    • Reads user/profile data of web browsers

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

    • 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