General
- Target www.viajealatardecer.com_nano.exe
- Size 64KB
- Sample261017-r18dfavyax
- SHA256 df0b5212d1fd8ce95dd88da44a92670fda2024d4375cb0324806db2105ec0905
- MD5 e8a35110d83d5ddb9783074ce5990038
- SHA1 d65d9ba2d1af9115a0f5e6a5fd28acd7ed6044d6
- SHA512 df14dee81162b502f695c763915d5a71ca48fd636411b9685be8adf923cccffc225633b40696d13f2b9b998a9482af837f787011015c4aeeb6686ccfda30f136
- SSDEEP 1536:duWZUXKrrBF6PPlGGUV/9ZOpu/A2WCc3Vnwmuagn5:YpMrBF6PtGJ9ZOpOA2WCc3Vwmur5
- TLSH T10553E88477F98611F5BF4AFE4D3295504731F8636D22D78E0A94448E1AB27848FE8B3B
- MD5 SHA1 SHA512 SSDEEP TLSH
Behavioral task
behavioral1
Sample
www.viajealatardecer.com_nano.exe
Resource
win10v2004-20260911-en
Behavioral task
behavioral2
Sample
www.viajealatardecer.com_nano.exe
Resource
win11ltsc2024-20260911-en
Malware Config
Extracted
-
nanocore
-
1.2.2.0
-
http://www.viajealatardecer.com
-
ac7e2f05-8df7-4c55-8841-78385f6bb064
-
c2_url
http://www.viajealatardecer.com
-
version
1.2.2.0
Targets
-
- Target www.viajealatardecer.com_nano.exe
- Size 64KB
- SHA256 df0b5212d1fd8ce95dd88da44a92670fda2024d4375cb0324806db2105ec0905
- MD5 e8a35110d83d5ddb9783074ce5990038
- SHA1 d65d9ba2d1af9115a0f5e6a5fd28acd7ed6044d6
- SHA512 df14dee81162b502f695c763915d5a71ca48fd636411b9685be8adf923cccffc225633b40696d13f2b9b998a9482af837f787011015c4aeeb6686ccfda30f136
- SSDEEP 1536:duWZUXKrrBF6PPlGGUV/9ZOpu/A2WCc3Vnwmuagn5:YpMrBF6PtGJ9ZOpOA2WCc3Vwmur5
- TLSH T10553E88477F98611F5BF4AFE4D3295504731F8636D22D78E0A94448E1AB27848FE8B3B
- 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.
Disables service(s)
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.
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