Extracted

• • Target

    firefox.png

  • Size

    768KB

  • MD5

    33c91aac1145f2daf53c01fe1791292d

  • SHA1

    44af6bd698b3d59796f791ddd481124fa5d0d2a0

  • SHA256

    9970ad6ef7831e2c2db795ed5337856b3dbae590d3cf051738d8c5f7f233b082

  • SHA512

    8fe91dfacba17d3b2e70ec0e10ce8a341fd70ebf6d31201cf105de72c38c40596f7c4fa6cd6432119c4468498411ef66c7dc64973ed1aa723f1d43ad46e77c5a

  • SSDEEP

    24576:GTGRbKsUhmw8DLkubFIQ8VOE+9SLjKxqbbxqcWr:sGFKsUf8LYVOELPdWr

  Score

  10^/10

  wannacrybootkitdefense_evasiondiscoveryexecutionimpactpersistenceprivilege_escalationransomwarespywarestealertrojanworm

  • Suspicious use of NtCreateProcessExOtherParentProcess

  • Suspicious use of NtCreateUserProcessOtherParentProcess

  • Wannacry

    WannaCry is a ransomware cryptoworm.

    ransomwarewormwannacry

  • Wannacry family

    wannacry

  • Deletes shadow copies

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution

  • Downloads MZ/PE file

  • Drops file in Drivers directory

  • Modifies RDP port number used by Windows

  • Sets service image path in registry

    persistence

  • Uses Session Manager for persistence

    Creates Session Manager registry key to run executable early in system boot.

    persistence

  • 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

  • Event Triggered Execution: Component Object Model Hijacking

    Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    persistenceprivilege_escalation

  • Executes dropped EXE

  • Impair Defenses: Safe Mode Boot

    defense_evasion

  • Loads dropped DLL

  • Modifies file permissions

    discovery

  • Reads user/profile data of web browsers

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

    spywarestealer

  • Windows security modification

    defense_evasiontrojan

  • Adds Run key to start application

    persistence

  • Checks for any installed AV software in registry

  • Checks installed software on the system

    Looks up Uninstall key entries in the registry to enumerate software on the system.

    discovery

  • Enumerates connected drives

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

  • File and Directory Permissions Modification: Windows File and Directory Permissions Modification

    defense_evasion

  • Legitimate hosting services abused for malware hosting/C2

  • Writes to the Master Boot Record (MBR)

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

    bootkitpersistence

  • AutoIT Executable

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory

  • Sets desktop wallpaper using registry

    ransomware
  behavioral1