Extracted

• • Target

    FunChecker.exe

  • Size

    13.5MB

  • MD5

    04accc794822e6da6b05da11cbd723a9

  • SHA1

    1b3e53a762f991d0f2689cd34adb8c8b88e6b6e5

  • SHA256

    98ffd90c72e22b5ce1783eeeebc424702e45398a7be1f3f9343beb7c87fc7977

  • SHA512

    904a481079c978f3822ac230fd03d210f52acc91d92d8ef833c2274e1441e49c547cb563cd7125b65c1a06c62ee1ed2bc0f42643e56330eeb9a5d208eddec5fb

  • SSDEEP

    393216:lXDyJgJ/LcGR1m6PH4xS8b+lpDLluOJYBowUt8/d:lDyJ2/LX1+E84DLwOJYBowI81

  Score

  10^/10

  umbralevasionexecutionpersistencespywarestealerthemidatrojan

  • 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

  • Reads user/profile data of web browsers

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

    spywarestealer

  • Themida packer

    Detects Themida, an advanced Windows software protection system.

    themida

  • 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.

  • Suspicious use of NtSetInformationThreadHideFromDebugger

  behavioral1