General

  • Target
    boykisser.exe
  • Size 815KB
  • Sample260701-1tt2xae12l
  • SHA256 79526720c69b7366108d418f252a41e2569eebacdbe158621c458b800f6438e7
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      boykisser.exe
    • Size 815KB
    • SHA256 79526720c69b7366108d418f252a41e2569eebacdbe158621c458b800f6438e7
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Modifies Windows Defender DisableAntiSpyware settings

    • Modifies Windows Defender Real-time Protection settings

    • Modifies firewall policy service

    • Modifies security service

    • Clears Windows event logs

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Modifies boot configuration data using bcdedit

    • Disables Task Manager via registry modification

    • Disables one or more Microsoft Defender components

      Uses the Powershell Set-MpPreference cmdlet to disable one or more Microsoft Defender components.

    • Event Triggered Execution: Image File Execution Options Injection

    • Credentials from Password Stores: Windows Credential Manager

      Suspicious access to Credentials History.

    • Disables service(s)

    • Reads user/profile data of web browsers

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

    • Stops running service(s)

    • Adds Run key to start application

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Indicator Removal: Clear Persistence

      remove IFEO.

    • Maps connected drives based on registry

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

    • Obfuscated Files or Information: Command Obfuscation

      Adversaries may obfuscate content during command execution to impede detection.

    • Power Settings

      powercfg controls all configurable power system settings on a Windows system and can be abused to prevent an infected host from locking or shutting down.

    • Writes to the Master Boot Record (MBR)

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

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v16

Tasks