Extracted

• • Target

    fwanufwa.exe

  • Size

    16.7MB

  • MD5

    157d1a68e8368cb8ed46e3173122562b

  • SHA1

    9fda498d3101ab26afe01a630f7dfec445cbef0c

  • SHA256

    aa1beca1ce33a11a5c56a8a79d03e38b51339d0fe977495ad72eb8b068b379bc

  • SHA512

    94ccf7674c0f5f849cd28c04da7d4dd045107fe78ca98e62f622511c3953ef94b6f248703820b29d01713d062984b300b37d5ba1c7d2e5b15febeddcb603a83d

  • SSDEEP

    393216:Aw73+t5XTNsNiI7T+PkdymUAZDtGACaeIXHZzvhh0fLD4DbTpcF13X:AQ3+t7I7TXCaeaZzv7GDAcF13

  Score

  10^/10

  xwormevasionexecutionpersistenceratthemidatrojanbootkitransomware

  • Deletes NTFS Change Journal

    The USN change journal is a persistent log of all changes made to local files used by Windows Server systems.

    ransomware

  • Detect Xworm Payload

  • Xworm

    Xworm is a remote access trojan written in C#.

    trojanratxworm

  • 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

  • Command and Scripting Interpreter: PowerShell

    Using powershell.exe command.

    execution

  • Sets DLL path for service in the registry

    persistence

  • Stops running service(s)

    evasionexecution

  • Checks BIOS information in registry

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

  • Checks computer location settings

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

  • Drops startup file

  • Executes dropped EXE

  • Loads dropped DLL

  • Themida packer

    Detects Themida, an advanced Windows software protection system.

    themida

  • Adds Run key to start application

    persistence

  • Checks whether UAC is enabled

    evasiontrojan

  • Enumerates connected drives

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

  • 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

  • Drops file in System32 directory

  • Suspicious use of NtSetInformationThreadHideFromDebugger

  behavioral1behavioral2