General
- Target Terentiy.exe
- Size 3.5MB
- Sample260814-vhsrtaxfmc
- SHA256 4a7567f06f698f1b4ff670e68f899da8416c9799ce791c63a43cd40f73aafa12
- MD5 4afa847a6650d601f6ed613bd15b6a47
- SHA1 c44862aa060b9690b53a1d39f2cdd52179506c7a
- SHA512 7b0548d721771aed9d3932e0a28a974d9bf71e1da282315191ed875cac2f0ed54d3294b62fc8c885e6b6a04a7853ba68b4409bf34a0cb8c23b9f290cea3306a9
- SSDEEP 49152:Tsp/Yx6lMQ+pLxrBdJdvd1dWdkdyS0m3WAZcS5huGvYontIz0Q6:wVLsjZcS5huGvYontIz0Q6
- TLSH T1AB06F65369DB0CE9CED667B8A5C76235A338FD71CA291F2BA604C1313C536C06E6EB50
- MD5 SHA1 SHA512 SSDEEP TLSH
Static task
static1
Behavioral task
behavioral1
Sample
Terentiy.exe
Resource
win10ltsc2021-20260513-en
Malware Config
Targets
-
- Target Terentiy.exe
- Size 3.5MB
- SHA256 4a7567f06f698f1b4ff670e68f899da8416c9799ce791c63a43cd40f73aafa12
- MD5 4afa847a6650d601f6ed613bd15b6a47
- SHA1 c44862aa060b9690b53a1d39f2cdd52179506c7a
- SHA512 7b0548d721771aed9d3932e0a28a974d9bf71e1da282315191ed875cac2f0ed54d3294b62fc8c885e6b6a04a7853ba68b4409bf34a0cb8c23b9f290cea3306a9
- SSDEEP 49152:Tsp/Yx6lMQ+pLxrBdJdvd1dWdkdyS0m3WAZcS5huGvYontIz0Q6:wVLsjZcS5huGvYontIz0Q6
- TLSH T1AB06F65369DB0CE9CED667B8A5C76235A338FD71CA291F2BA604C1313C536C06E6EB50
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Modifies WinLogon for persistence
-
UAC bypass
-
Clears Windows event logs
-
Deletes shadow copies
Ransomware often targets backup files to inhibit system recovery.
-
Modifies boot configuration data using bcdedit
-
Disables RegEdit via registry modification
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Disables Task Manager via registry modification
-
Disables cmd.exe use via registry modification
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Event Triggered Execution: Image File Execution Options Injection
-
Modifies Windows Firewall
-
Possible privilege escalation attempt
-
Uses Session Manager for persistence
Creates Session Manager registry key to run executable early in system boot.
-
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
-
Event Triggered Execution: Component Object Model Hijacking
Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.
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Executes dropped EXE
-
Modifies file permissions
-
Adds Run key to start application
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Drops desktop.ini file(s)
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Indicator Removal: File Deletion
Adversaries may delete files left behind by the actions of their intrusion activity.
-
Maps connected drives based on registry
Disk information is often read in order to detect sandboxing environments.
-
Checks system information in the registry
System information is often read in order to detect sandboxing environments.
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Drops file in System32 directory
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1Windows Management Instrumentation
1Persistence
Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
2Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
2Component Object Model Hijacking
1Image File Execution Options Injection
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
2Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
2Component Object Model Hijacking
1Image File Execution Options Injection
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Direct Volume Access
1File and Directory Permissions Modification
1Impair Defenses
2Disable or Modify System Firewall
1Disable or Modify Tools
1Indicator Removal
5Clear Windows Event Logs
1File Deletion
4Modify Registry
5