Extracted

• • Target

    FunChecker.vmp.exe

  • Size

    13.6MB

  • MD5

    8b2fa6497ba4fc285a5545bda2e8cde6

  • SHA1

    31cec6fb97888c34c80af8ca73aa67456f68e4e3

  • SHA256

    5197fcb7b98a65eabf8151d847bb394eccd65a184f06a82f674a9b95e62e701c

  • SHA512

    fbf93ca3aecabdbb4a8c978037ca15f14b990fdd32c892e0fdd8bbb491bde8005fbf8326dbd89adf71e9c7cca7f1592dc7ef5694cc45181a50332ed6a594ee40

  • SSDEEP

    393216:jrmibLqxo6IKWmKF8tmZ4O/Qtu1dmoz2jqK8VPYAjV2:jr7b+xHI76tmZ4O4E1d99QAjQ

  Score

  10^/10

  umbralbootkitevasionexecutionpersistencespywarestealertrojanvmprotect

  • Detect Umbral payload

  • Modifies Windows Defender Real-time Protection settings

    evasiontrojan

  • Modifies security service

    evasion

  • Umbral

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

    stealerumbral

  • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    evasion

  • 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

  • Checks BIOS information in registry

    BIOS information is often read in order to detect sandboxing environments.

  • Drops startup file

  • Executes dropped EXE

  • Identifies Wine through registry keys

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    evasion

  • Reads user/profile data of web browsers

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

    spywarestealer

  • VMProtect packed file

    Detects executables packed with VMProtect commercial packer.

    vmprotect

  • Adds Run key to start application

    persistence

  • Checks whether UAC is enabled

    evasiontrojan

  • 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.

  • Writes to the Master Boot Record (MBR)

    Bootkits write to the MBR to gain persistence at a level below the operating system.

    bootkitpersistence

  • Suspicious use of NtSetInformationThreadHideFromDebugger

  behavioral1