Extracted

Extracted

• • Target

    Bootstrapper.exe

  • Size

    427KB

  • MD5

    fa1fd1fb9ab5b24cd1f3cedcbd239c1c

  • SHA1

    8177b3bc63bccfe739fcf402070877b0e1f1ee75

  • SHA256

    fa737d8c1b29cc13fa645ea33300e76438ed0601016554475c3d258cf2a1217f

  • SHA512

    cf8eca2b4bddd4e128b2941b0e7c96b2f036567e418592058607b42c5c1ec376735026ecd2675243883623c61b1245e7836febc645b0ff34f30df07d4153010e

  • SSDEEP

    12288:zKgs2X/gDiVBQTB2zI6sJJFvn4yF8LU5:9sygDOBg3VFvTF8Lo

  Score

  10^/10

  umbralxwormexecutionpersistenceratstealertrojancredential_accessdiscoveryspyware

  • Detect Umbral payload

  • Detect Xworm Payload

  • Umbral

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

    stealerumbral

  • Xworm

    Xworm is a remote access trojan written in C#.

    trojanratxworm

  • 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

  • Checks computer location settings

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

  • Drops startup file

  • 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

  • Blocklisted process makes network request

  • 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.

  behavioral1behavioral2behavioral3