General
- Target teztools.io_ransome.exe
- Size 39KB
- Sample260810-ceqtyaszhs
- SHA256 73bfabdf912d421d6ed9e08a797e1e3ee8d398249149d7e6b00f123d2d37d462
- MD5 8a37ec173ec45ee6ac66fe809a1007b2
- SHA1 e9a890d2e1f460abd0b95e22aa5a78e561fcc9c6
- SHA512 cf44d4440229a99f9de32d45dbfab9509cc5181d41fd5cb4967ae740338adb5695147cd73b34bcf0cea11ba0ee1599e02d49efe7f57342f5401cf926cb75e282
- SSDEEP 768:HEfUYnmYHTiqFmqMcgVMfIxf0/moIOO9uH2dEEusXqKhgayzG:JYnPTFMdMAu/moIOO9uWdf9Xqig2
- TLSH T15703D74437FD8628E1BF6BB74D7282008775F8978D23DB0D0ED1849E1A73B449A99B93
- MD5 SHA1 SHA512 SSDEEP TLSH
Behavioral task
behavioral1
Sample
teztools.io_ransome.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
teztools.io_ransome.exe
Resource
win11ltsc2024-20260709-en
Malware Config
Extracted
-
nanocore
-
c2_port
22401
Targets
-
- Target teztools.io_ransome.exe
- Size 39KB
- SHA256 73bfabdf912d421d6ed9e08a797e1e3ee8d398249149d7e6b00f123d2d37d462
- MD5 8a37ec173ec45ee6ac66fe809a1007b2
- SHA1 e9a890d2e1f460abd0b95e22aa5a78e561fcc9c6
- SHA512 cf44d4440229a99f9de32d45dbfab9509cc5181d41fd5cb4967ae740338adb5695147cd73b34bcf0cea11ba0ee1599e02d49efe7f57342f5401cf926cb75e282
- SSDEEP 768:HEfUYnmYHTiqFmqMcgVMfIxf0/moIOO9uH2dEEusXqKhgayzG:JYnPTFMdMAu/moIOO9uWdf9Xqig2
- TLSH T15703D74437FD8628E1BF6BB74D7282008775F8978D23DB0D0ED1849E1A73B449A99B93
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Deletes shadow copies
Ransomware often targets backup files to inhibit system recovery.
-
Grants admin privileges
Uses net.exe to modify the user's privileges.
-
Disables one or more Microsoft Defender components
Uses the Powershell Set-MpPreference cmdlet to disable one or more Microsoft Defender components.
-
Modifies Windows Firewall
-
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
-
Creates a file in the Startup directory
A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.
-
Stops running service(s)
-
Adds Run key to start application
-
Creates a new local user account
Uses net.exe to create a new local user account, often for persistence or a backdoor account.
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1System Services
1Service Execution
1Windows Management Instrumentation
1Persistence
Account Manipulation
1Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Create Account
1Local Account
1Create or Modify System Process
2Windows Service
2Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Account Manipulation
1Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Create or Modify System Process
2Windows Service
2Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Direct Volume Access
1Impair Defenses
3Disable or Modify System Firewall
1Disable or Modify Tools
1Indicator Removal
2File Deletion
2Modify Registry
1