General

  • Target
    boykisser.exe
  • Size 1.5MB
  • Sample260701-b7n1dab19p
  • SHA256 26742d87cc980cc139521094d045f2f732a495431cf6d83757c3e29f34d6fa23
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      boykisser.exe
    • Size 1.5MB
    • SHA256 26742d87cc980cc139521094d045f2f732a495431cf6d83757c3e29f34d6fa23
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Modifies Windows Defender DisableAntiSpyware settings

    • Modifies Windows Defender Real-time Protection settings

    • Clears Windows event logs

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Modifies boot configuration data using bcdedit

    • Badlisted process makes network request

      Network request originating from process or tool commonly abused by malware.

    • 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.

    • 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)

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • 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

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

MITRE ATT&CK Enterprise v16

Tasks