Extracted

• • Target
    Umbral.exe
  • Size 229KB
  • SHA256 2c0613ecdfab2dd88f717e6b2205d5135b0c6e2b96791b31f2ef762544ea2eaf
  • MD5 b5c73976725407546d8ae5e07b06a000
  • SHA1 e6d929c6259982558b6bc5e1a28aedd230b3cc0d
  • SHA512 c7ef26525ac03d1551bbd311beadbaf1cc3ea294ea940a742fa3b59cec3a751759ad0544dc23fdf481d5ffba659de0fa017443f3567da1c56a691b970c09c7b1
  • SSDEEP 6144:tloZMUXU9Zx0kt8X0/PSCsMLBAttSPSlSOS2SZe4ScS1SnSiSiSnZbb8e1mnVi:voZof0kkPiBAttSPSlSOS2SZe4ScS1Sk
  • TLSH
    T115346B4933B88B17E25F8BBED5B1158F8BB1F143E90AF78E0C8895F82411742E949E57
  • 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

  • Enumerates connected drives

    Attempts to read the root path of hard drives other than the default C: drive.

  • Looks up external IP address via web service

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

    discovery
  behavioral1