Extracted

• • Target

    Client.exe

  • Size

    440KB

  • MD5

    6527754a84c08c132797ac0e41232027

  • SHA1

    f42f9df429a4fe20f02039d5628bbb5f8c334265

  • SHA256

    b0a58d3f76d8ec2462e59c1ca89b6131ad81a7fabc43b5e7d3bd883311035d8a

  • SHA512

    ebcba42e29d8aba555479ebf6841bc44c9f5542edf51728d41bfa65fadb847c2e849d64a2dbe5634bcbafa884d04027b0d29999f7d640d7045a05dfb8d610480

  • SSDEEP

    6144:CuuPnduxK8e6VlWT8b9LBlTsjp6PvZhb5z9YivZQw:5uPnkPVle8lWpgz1ZQ

  Score

  10^/10

  umbraldiscoveryexecutionpersistenceprivilege_escalationspywarestealer

  • Detect Umbral payload

  • Modifies WinLogon for persistence

    persistence

  • Umbral

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

    stealerumbral

  • Umbral family

    umbral

  • Boot or Logon Autostart Execution: Active Setup

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    persistence

  • Command and Scripting Interpreter: PowerShell

    Start PowerShell.

    execution

  • Drops file in Drivers directory

  • Event Triggered Execution: AppInit DLLs

    Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.

    persistenceprivilege_escalation

  • 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

  • Enumerates connected drives

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

  • 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.

  behavioral1