Extracted

• • Target

    Umbral1.exe

  • Size

    221KB

  • MD5

    fe655b03add462121d67240f461e8787

  • SHA1

    73907706fdf7922ba19a27f4b1fd315f7c107efe

  • SHA256

    dccdba44701fbf3031e6a2ad016cb702c7941ca2abbc754ba60b1d0ca5396e82

  • SHA512

    c00653793e37dee5b4bdc5cbd0194038928e03dfb8a3e8910c54d8c20133e163c59c36fb6989c180c3fb9e39e9a37d3544292f55fd92367749e7fa143c4c8b7b

  • SSDEEP

    6144:KloZMUrIkd8g+EtXHkv/iD439sJNlK8euYi:0oZrL+EP8Na

  Score

  10^/10

  umbraldiscoveryexecutionspywarestealer

  • Detect Umbral payload

  • Umbral

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

    stealerumbral

  • Umbral family

    umbral

  • Command and Scripting Interpreter: PowerShell

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

    execution

  • Downloads MZ/PE file

  • 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