Extracted

• • Target
    Umbral.exe
  • Size 229KB
  • SHA256 368a9eb29c07dac6f38c3892a786e72038cc53fcc3d92287007a96a9b08f4c35
  • MD5 0f951d49c78ee1e6887d72a9a6bddb37
  • SHA1 db2984ff226b607c874742176f52945f115199d5
  • SHA512 31f0c39d5055fc5f36742709e1c2f1ebedb8baa3b3aa9494e0b4a1363ff6db144d8468278dc41c42d3640655d4d38764ac12458c198a0c0b3b4313bfdf96f497
  • SSDEEP 6144:lloZM9rIkd8g+EtXHkv/iD4OxdtiAfboGxUyzzqceb8e1mbQi:noZOL+EP8OxdtiAfboGxUyzzq7qJ
  • TLSH
    T1DE346B5933B88B17E25F8BBED5B1158F87B1F103E90AF7CE0C8895E82411B42E949E57
  • MD5 SHA1 SHA512 SSDEEP TLSH

  Score

  10^/10

  defense_evasiondiscoveryexecutionumbralspywarestealer

  • Detects Umbral payload

  • Family: Umbral

    Umbral stealer is an open-source modular 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

  • Disables one or more Microsoft Defender components

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

    defense_evasion

  • 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.

    defense_evasion

  • Reads user/profile data of web browsers

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

    spywarestealer

  • Contacts third-party web service commonly abused for C2

    Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

  • Looks up external IP address via web service

    Uses a legitimate IP lookup service to find the infected system's external IP.

  behavioral1