General
- Target cakhiatvi.cc_nano.exe
- Size 64KB
- Sample261027-q32g8set7n
- SHA256 5f5ac9d377c90b3c8772c02d53d2f92fe807644b29fe08b9849db37e4dfb59c1
- MD5 48d4c40c249c6174a300d8549c8917ab
- SHA1 b758884a87f4819f7ad53d4fda9895853a78ec59
- SHA512 84d3c5e5125e8abf9be2934da67dced4746f2e40f6e8797065e8dd908c175dd47f596643bac1fc7ae9bb6e8d01f6375b83e85657518037f719a316e37e36f181
- SSDEEP 1536:eOO8rRWzXCDMYDPzZUF9Uto/9wOpu2A2WCc3Vnwxuagn7:8dSDMYDPlUF9UA9wOp3A2WCc3Vwxur7
- TLSH T1A353E78477ED8611E5FF4AFE8D3195114B31F8679C23D78E0A94448E1AB2784CEE8B27
- MD5 SHA1 SHA512 SSDEEP TLSH
Behavioral task
behavioral1
Sample
cakhiatvi.cc_nano.exe
Resource
win10v2004-20260911-en
Behavioral task
behavioral2
Sample
cakhiatvi.cc_nano.exe
Resource
win11ltsc2024-20260911-en
Malware Config
Extracted
-
nanocore
-
1.2.2.0
-
http://cakhiatvi.cc
-
ac7e2f05-8df7-4c55-8841-78385f6bb064
-
c2_url
http://cakhiatvi.cc
-
version
1.2.2.0
Targets
-
- Target cakhiatvi.cc_nano.exe
- Size 64KB
- SHA256 5f5ac9d377c90b3c8772c02d53d2f92fe807644b29fe08b9849db37e4dfb59c1
- MD5 48d4c40c249c6174a300d8549c8917ab
- SHA1 b758884a87f4819f7ad53d4fda9895853a78ec59
- SHA512 84d3c5e5125e8abf9be2934da67dced4746f2e40f6e8797065e8dd908c175dd47f596643bac1fc7ae9bb6e8d01f6375b83e85657518037f719a316e37e36f181
- SSDEEP 1536:eOO8rRWzXCDMYDPzZUF9Uto/9wOpu2A2WCc3Vnwxuagn7:8dSDMYDPlUF9UA9wOp3A2WCc3Vwxur7
- TLSH T1A353E78477ED8611E5FF4AFE8D3195114B31F8679C23D78E0A94448E1AB2784CEE8B27
- 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.
-
Modifies security service
-
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 RegEdit via registry modification
-
Disables Task Manager via registry modification
-
Drops file in Drivers directory
-
Event Triggered Execution: Image File Execution Options Injection
-
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.
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Disables service(s)
-
Stops running service(s)
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Adds Run key to start application
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Creates a new local user account
Uses net.exe to create a new local user account, often for persistence or a backdoor account.
-
Discovers running processes
Running process information can be used to identify security tools or plan follow-on actions.
-
Drops file in System32 directory
-
Executes a VBScript file via the Windows Script Host.
-
Sets desktop wallpaper using registry
-
Suspicious use of NtSetInformationThreadHideFromDebugger
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
4PowerShell
1Visual Basic
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1System Services
2Service Execution
2Windows Management Instrumentation
1Persistence
Account Manipulation
1Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Create Account
1Local Account
1Create or Modify System Process
5Windows Service
5Event Triggered Execution
2Image File Execution Options Injection
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Account Manipulation
1Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Create or Modify System Process
5Windows Service
5Event Triggered Execution
2Image File Execution Options Injection
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Debugger Evasion
1Direct Volume Access
1Impair Defenses
3Disable or Modify System Firewall
1Disable or Modify Tools
1Indicator Removal
2File Deletion
2Modify Registry
4Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1