Extracted

• • Target

    avg_antivirus_free_setup.exe

  • Size

    229KB

  • MD5

    17b75739e76022b30f1f568192c30db2

  • SHA1

    671422d2ebb2fd87ecd48743cc0f679564ae6502

  • SHA256

    6174b78835db0d54f99b53df75f5f2a4f7294e35c404448f55069a78047e259e

  • SHA512

    978aaac3772e57dcdfeb0f1bd4a053297cd7723a1c4cce1dd35937952124d01cfefb56a8d5f45acea899ffe57f734152b6fc6a522134a5558a026cd402931e88

  • SSDEEP

    3072:A2RaiKg4xmUh1WXHqw/l+qmOELhakVsm3mxB32tLEv8zfdn5f2dZLCoKOhhXK0K3:A0KgGwHqwOOELha+sm2D2+UhngN9K4a

  Score

  10^/10

  wannacrybootkitdefense_evasiondiscoveryevasionexecutionimpactpersistenceprivilege_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

  • Uses Session Manager for persistence

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

    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

  • Unexpected DNS network traffic destination

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Windows security modification

    evasiontrojan

  • Adds Run key to start application

    persistence

  • Checks for any installed AV software in registry

  • Downloads MZ/PE file

  • 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

  • Maps connected drives based on registry

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

  • 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
  behavioral1behavioral2