General

  • Target
    hzam.exe
  • Size 481KB
  • Sample260913-w291wahc87
  • SHA256 e4277ff113713aa2381f58a39b343fece7cefb6abef368b16ac996b5ff08dc23
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • umbral

Version
  • v1.3

C2
  • https://discord.com/api/webhooks/1390532450865778718/QLl_iHjghZCSJsGbhqScEocrubKiB6rZFX3G1NN1CEZoYJ0Gqk-x3R9aBG6_pT4oUZuI

Targets

    • Target
      hzam.exe
    • Size 481KB
    • SHA256 e4277ff113713aa2381f58a39b343fece7cefb6abef368b16ac996b5ff08dc23
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detects Umbral payload

    • Family: Umbral

      Umbral stealer is an open-source modular stealer written in C#.

    • Command and Scripting Interpreter: PowerShell

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

    • Disables one or more Microsoft Defender components

      Uses the Powershell Set-MpPreference cmdlet to disable one or more Microsoft Defender components.

    • Drops file in Drivers directory

    • Disables automatic submission of suspicious files to Microsoft by Windows Defender

      Uses the Powershell Set-MpPreference cmdlet to prevent Windows Defender from automatically sending files to Microsoft for analysis.

    • Reads user/profile data of web browsers

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

    • 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 v16

Tasks