Extracted

• • Target
    Umbral.exe
  • Size 231KB
  • SHA256 82da6e94870960b8f186be9c854781e51d15d71fdbbed4cb86dbd732d6019fc3
  • MD5 3fdbb46f4fa9d3557b94e75be7c656f2
  • SHA1 13635ffaf759afb025b42187a04f5f990cbdaaa4
  • SHA512 43632ddf8e1683668b6f9aeb9256a86eed5a120a1a6fe0dae3fca8e94f654e83f13e2731eb071be8273d0cfe31b6a415523f8b50e1a8a1a96905dde22f91b74c
  • SSDEEP 6144:RloZM+rIkd8g+EtXHkv/iD4U9GGHdmOh/U9va6vxS2b8e1mX+i:joZtL+EP8U9GGHdmOh/U9va6vx1Qz
  • TLSH
    T1F6346B4933B8CB17E25F8BBED5B1159F87B1F103E90AF7CE0C8895E82411B42E949A57
  • 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

    Using powershell.exe command.

    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.

    discovery
  behavioral1behavioral2behavioral3