Extracted

• • Target

    Umbral.exe

  • Size

    416KB

  • MD5

    bc5dd701f57c7d57c143f1cfd0bb2e0c

  • SHA1

    bd5cac1520ccb83442a96ac34cfccf2730591720

  • SHA256

    a0b244e1ee7d95f564857f7e481620731d347e5934f4bcc6098a76eb1b71a499

  • SHA512

    dca39c9fab005131247cbddbdf3a6a77eeaa9cf3f4c09a9cd3bf2641add1818092e314c9225060b809a45fb1c66db0de2a7d64dfaaeb3b2f73767faab4e897a2

  • SSDEEP

    12288:5oZtL+EP8HE3APlO2Z6c1niinSFDA2oCMt/YdD:XI8k3APlO2Z6c1niinSJ6/W

  Score

  10^/10

  umbralcredential_accessdiscoveryexecutionspywarestealer

  • Detect Umbral payload

  • Umbral

    Umbral stealer is an opensource moduler stealer written in C#.

    stealerumbral

  • Credentials from Password Stores: Credentials from Web Browsers

    Malicious Access or copy of Web Browser Credential store.

    credential_accessstealer

  • Command and Scripting Interpreter: PowerShell

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

    execution

  • Command and Scripting Interpreter: PowerShell

    Using powershell.exe command.

    execution

  • 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.

    spywarestealer

  • 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.

  behavioral1behavioral2