Extracted

• • Target

    Nezure.exe

  • Size

    8.3MB

  • MD5

    4efce9b6099fa6bfc272b5e192fe16cc

  • SHA1

    d5495d7d0593a0258bb50325eb0381cec5decd19

  • SHA256

    185d297d3a204b586f262ce576bc40127b6ea49561b07c7e40c0a2e779df03e1

  • SHA512

    0b81846c316c3790b1d3fd88953d7c9350443d8dd34cbf4311677e5706b59f4e8b0819186f7cb81b980bab88b9aa6802170536d50a989f081b0aacb68f58ca5f

  • SSDEEP

    196608:UB4vMWmmF95vrRoypY2xNS+U1kYLLBGJt4qi5Wh4d3J4jtQG0gIe:UevBn5viETxNS+5OBU4hat0gI

  Score

  10^/10

  umbralexecutionpersistencespywarestealer

  • Detect Umbral payload

  • Modifies WinLogon for persistence

    persistence

  • Umbral

    Umbral stealer is an opensource moduler 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

  • Drops file in Drivers directory

  • Modifies AppInit DLL entries

    persistence

  • Checks computer location settings

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE

  • Loads dropped DLL

  • Reads user/profile data of web browsers

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

    spywarestealer

  • Adds Run key to start application

    persistence

  • 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