General
- Target boykisser.exe
- Size 815KB
- Sample260701-1tt2xae12l
- SHA256 79526720c69b7366108d418f252a41e2569eebacdbe158621c458b800f6438e7
- MD5 80ee5ab2786a0055e48e9915c28a764c
- SHA1 44774e0e04e5bfc36fa58aac2d49c0136fc86ca9
- SHA512 42c90a3ce6257e0a135f15fe351d497f3be402655599739f4f4c4faa41e9190a2525b3655cbef016b0615523e0c982df72d74de8090e9246df067b659205b2e2
- SSDEEP 12288:XcOmrzARTsK1dJmROgyoHQl7O4qHJWWGv7qXRKtAEhzg:MT8GK1dJ4yFSnHAWGIKt6
- TLSH T1B3055B17FBA791FCD116C0749326A572FA72B88A41323EBB17E49A307E55F406B1CB09
- MD5 SHA1 SHA512 SSDEEP TLSH
Static task
static1
Behavioral task
behavioral1
Sample
boykisser.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
boykisser.exe
Resource
win11ltsc2024-20260629-en
Malware Config
Targets
-
- Target boykisser.exe
- Size 815KB
- SHA256 79526720c69b7366108d418f252a41e2569eebacdbe158621c458b800f6438e7
- MD5 80ee5ab2786a0055e48e9915c28a764c
- SHA1 44774e0e04e5bfc36fa58aac2d49c0136fc86ca9
- SHA512 42c90a3ce6257e0a135f15fe351d497f3be402655599739f4f4c4faa41e9190a2525b3655cbef016b0615523e0c982df72d74de8090e9246df067b659205b2e2
- SSDEEP 12288:XcOmrzARTsK1dJmROgyoHQl7O4qHJWWGv7qXRKtAEhzg:MT8GK1dJ4yFSnHAWGIKt6
- TLSH T1B3055B17FBA791FCD116C0749326A572FA72B88A41323EBB17E49A307E55F406B1CB09
- MD5 SHA1 SHA512 SSDEEP TLSH
-
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)
-
Stops running service(s)
-
Adds Run key to start application
-
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
Execution
Command and Scripting Interpreter
1PowerShell
1System Services
2Service Execution
2Windows Management Instrumentation
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
6Windows Service
6Event Triggered Execution
1Image File Execution Options Injection
1Power Settings
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
6Windows Service
6Event Triggered Execution
1Image File Execution Options Injection
1Defense Evasion
Direct Volume Access
1Impair Defenses
5Disable or Modify System Firewall
1Disable or Modify Tools
3Indicator Removal
4Clear Persistence
1Clear Windows Event Logs
1File Deletion
2Modify Registry
7Obfuscated Files or Information
1Command Obfuscation
1Pre-OS Boot
1Bootkit
1Credential Access
Credentials from Password Stores
2Credentials from Web Browsers
1Windows Credential Manager
1Unsecured Credentials
1Credentials In Files
1