General
- Target memz_bootkiller.exe
- Size 755KB
- Sample260926-xbebys1tbx
- SHA256 5c4e77fce970bbc2e30c151ea3c6f4e771413941cce0eb40ce649d06aaa2b371
- MD5 61caeecb083c738ceb238413d77d994a
- SHA1 5fb63042ba9e193c36ed7bfb24d24af58d144b1e
- SHA512 99a5cb5701d7cb5540b2c179fceb58a1eb90a2da9b2afa8095563962c862920b8094693a5b99844c70cb309ee2d34a04963b501cdcb6758b86bab342acd6ce4b
- SSDEEP 12288:Whe95B3XXRWh20UCUzHZ+dVTTGDwnbd2xd:Ws3RKUVHZKTWYbd2xd
- TLSH T107F43A47B3A49EEADC12663895CF631DA734FCB007929AC7671052216E47BE88D7FB10
- MD5 SHA1 SHA512 SSDEEP TLSH
Static task
static1
Behavioral task
behavioral1
Sample
memz_bootkiller.exe
Resource
win10v2004-20260911-en
Behavioral task
behavioral2
Sample
memz_bootkiller.exe
Resource
win11-20260911-en
Malware Config
Targets
-
- Target memz_bootkiller.exe
- Size 755KB
- SHA256 5c4e77fce970bbc2e30c151ea3c6f4e771413941cce0eb40ce649d06aaa2b371
- MD5 61caeecb083c738ceb238413d77d994a
- SHA1 5fb63042ba9e193c36ed7bfb24d24af58d144b1e
- SHA512 99a5cb5701d7cb5540b2c179fceb58a1eb90a2da9b2afa8095563962c862920b8094693a5b99844c70cb309ee2d34a04963b501cdcb6758b86bab342acd6ce4b
- SSDEEP 12288:Whe95B3XXRWh20UCUzHZ+dVTTGDwnbd2xd:Ws3RKUVHZKTWYbd2xd
- TLSH T107F43A47B3A49EEADC12663895CF631DA734FCB007929AC7671052216E47BE88D7FB10
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Deletes shadow copies
Ransomware often targets backup files to inhibit system recovery.
-
Modifies boot configuration data using bcdedit
-
Command and Scripting Interpreter: PowerShell
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
-
Disables RegEdit via registry modification
-
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.
-
Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
3PowerShell
1Windows Command Shell
1Windows Management Instrumentation
1Defense Evasion
Direct Volume Access
1Impair Defenses
1Disable or Modify Tools
1Indicator Removal
3File Deletion
3