General

  • Target
    Twitch Patcheur Setup.exe
  • Size 288KB
  • Sample240806-x7mcfayanq
  • SHA256 0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • umbral

C2
  • https://discord.com/api/webhooks/1269047079758594108/3Ng7lWTlbHkrMHpCEKNLV1cr1a_jBm12qDAIhwP87DidKDHnWwp3TKgULExiGg1xR1rJ

Targets

    • Target
      Twitch Patcheur Setup.exe
    • Size 288KB
    • SHA256 0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4
    • 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

      Using powershell.exe command.

    • Command and Scripting Interpreter: PowerShell

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

    • 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.

    • 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