General
- Target cat-cryptor-v1.exe
- Size 12.7MB
- Sample261020-tx31nastft
- SHA256 362cd24fe4581945c26748cbc4aa3db9e1c68e69c5739cb8d65f51ec7ea4ec9a
- MD5 297f98e0585d1c0c025280c92b7e56dc
- SHA1 f6627fbd581ef9ad7c5d22f7bf8c0e22dd41cd40
- SHA512 5e9e7718f2533f614d90d7bd2d6ae6a58dfc01f2e042bc6ccad733c335a1240496d73cc83a7c617e893bb262e64b7eb9758973174ebf58abf4f8df6051d979d0
- SSDEEP 49152:DJhuYE4KPTw++1Zzzs6fOCuEMr/KsaYgNBeESXZO6i43dNhpeF08eI0/SMASBR0z:DJhuYlKL8JOCuEMrKsa1JuZ
- TLSH T1B7D6F93479EB185DB3A79A9E4BD9B5EE5D1EF363230B21B82070334B83129418DE5B35
- MD5 SHA1 SHA512 SSDEEP TLSH
Static task
static1
Behavioral task
behavioral1
Sample
cat-cryptor-v1.exe
Resource
win10v2004-20260911-en
Behavioral task
behavioral2
Sample
cat-cryptor-v1.exe
Resource
win11ltsc2024-20260911-en
Malware Config
Targets
-
- Target cat-cryptor-v1.exe
- Size 12.7MB
- SHA256 362cd24fe4581945c26748cbc4aa3db9e1c68e69c5739cb8d65f51ec7ea4ec9a
- MD5 297f98e0585d1c0c025280c92b7e56dc
- SHA1 f6627fbd581ef9ad7c5d22f7bf8c0e22dd41cd40
- SHA512 5e9e7718f2533f614d90d7bd2d6ae6a58dfc01f2e042bc6ccad733c335a1240496d73cc83a7c617e893bb262e64b7eb9758973174ebf58abf4f8df6051d979d0
- SSDEEP 49152:DJhuYE4KPTw++1Zzzs6fOCuEMr/KsaYgNBeESXZO6i43dNhpeF08eI0/SMASBR0z:DJhuYlKL8JOCuEMrKsa1JuZ
- TLSH T1B7D6F93479EB185DB3A79A9E4BD9B5EE5D1EF363230B21B82070334B83129418DE5B35
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Contains code to disable Windows Defender
A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.
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Modifies WinLogon for persistence
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Modifies Windows Defender Real-time Protection settings
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Modifies Windows Defender notification settings
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Modifies firewall policy service
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Modifies security service
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UAC bypass
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Modifies boot configuration data using bcdedit
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Renames multiple (72) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Disables RegEdit via registry modification
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Disables one or more Microsoft Defender components
Uses the Powershell Set-MpPreference cmdlet to disable one or more Microsoft Defender components.
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Drops file in Drivers directory
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Event Triggered Execution: Image File Execution Options Injection
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE
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Impair Defenses: Safe Mode Boot
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Windows security modification
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Adds Run key to start application
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Checks whether UAC is enabled
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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
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Drops file in System32 directory
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2PowerShell
1Windows Command Shell
1Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Create or Modify System Process
6Windows Service
6Event Triggered Execution
1Image File Execution Options Injection
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Create or Modify System Process
6Windows Service
6Event Triggered Execution
1Image File Execution Options Injection
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
10Disable or Modify System Firewall
1Disable or Modify Tools
7Safe Mode Boot
1Modify Registry
12