Extracted

• • Target
    avast_free_antivirus_setup_online.exe
  • Size 257KB
  • SHA256 1fb53cd33d285e2807dca6ee3005689f1425b363c46b377958a7431a46488207
  • MD5 5dd99460687fa202f26bef9565b2eb71
  • SHA1 d90930758b01570db7403b1e1130c99d5dfbac91
  • SHA512 ef59d47099f738eedd457a7bbe4779af5e956f7afe073bc98f9d3b10ae57891a225402ad7494c055d656d111e59991fd54ccb00174d3b860e685cb6c49317f82
  • SSDEEP 3072:482RaiKg4xmUh1WXHqw/l+qmOELhakVsm3mxB32tLEv8zfdn5f2dZLCozOhhSn+K:480KgGwHqwOOELha+sm2D2+Uhngu7p
  • MD5 SHA1 SHA512 SSDEEP

  Score

  10^/10

  bootkitpersistencewannacrydefense_evasiondiscoveryevasionexecutionimpactprivilege_escalationransomwarespywarestealertrojanworm

  • Suspicious use of NtCreateProcessExOtherParentProcess

  • Wannacry

    WannaCry is a ransomware cryptoworm.

    ransomwarewormwannacry

  • Deletes shadow copies

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution

  • Drops file in Drivers directory

  • Sets service image path in registry

    persistence

  • Drops startup file

  • Impair Defenses: Safe Mode Boot

    defense_evasion

  • 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

    evasiontrojan

  • Adds Run key to start application

    persistence

  • Boot or Logon Autostart Execution: Active Setup

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    persistence

  • Checks for any installed AV software in registry

  • Checks whether UAC is enabled

    evasiontrojan

  • Downloads MZ/PE file

  • Enumerates connected drives

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

  • Event Triggered Execution: Image File Execution Options Injection

    persistence

  • 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

  • Checks computer location settings

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

  • Drops file in System32 directory

  • 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

  • Sets desktop wallpaper using registry

    ransomware
  behavioral1behavioral2behavioral3