General
- Target xoilacz1.co_nano.exe
- Size 64KB
- Sample261014-ejgg6svy3j
- SHA256 76ced234dcc8cdc130ac0216c5e517570afa3587d3e5bb978da7dd8953d37e67
- MD5 2d5ffa99fae05dc7bd9c54c5bc491532
- SHA1 5ecf7b75c2ab30ede96e4eda3a63beb3ca31cd92
- SHA512 82422e356a26d260e14380f811eb9c8ebca079fdbad864a0a7e584f60cfcaaa546a7adde623d07fdf45fbf44d10607e134925cd7938de657588fc90f993a2fd4
- SSDEEP 1536:+Qa1nj3NElg6qPCxGlajWza/9oKOpuNA2WCc3VnwJuagnk:KB6lg6qPWGl+9pOpoA2WCc3VwJurk
- TLSH T1F053E78477E98620E6BE4EFE5D3191514B31F8779C23D78D0A84049E1A737848EECB6B
- MD5 SHA1 SHA512 SSDEEP TLSH
Behavioral task
behavioral1
Sample
xoilacz1.co_nano.exe
Resource
win10v2004-20260911-en
Behavioral task
behavioral2
Sample
xoilacz1.co_nano.exe
Resource
win11ltsc2024-20260911-en
Malware Config
Extracted
-
nanocore
-
1.2.2.0
-
http://xoilacz1.co
-
ac7e2f05-8df7-4c55-8841-78385f6bb064
-
c2_url
http://xoilacz1.co
-
version
1.2.2.0
Targets
-
- Target xoilacz1.co_nano.exe
- Size 64KB
- SHA256 76ced234dcc8cdc130ac0216c5e517570afa3587d3e5bb978da7dd8953d37e67
- MD5 2d5ffa99fae05dc7bd9c54c5bc491532
- SHA1 5ecf7b75c2ab30ede96e4eda3a63beb3ca31cd92
- SHA512 82422e356a26d260e14380f811eb9c8ebca079fdbad864a0a7e584f60cfcaaa546a7adde623d07fdf45fbf44d10607e134925cd7938de657588fc90f993a2fd4
- SSDEEP 1536:+Qa1nj3NElg6qPCxGlajWza/9oKOpuNA2WCc3VnwJuagnk:KB6lg6qPWGl+9pOpoA2WCc3VwJurk
- TLSH T1F053E78477E98620E6BE4EFE5D3191514B31F8779C23D78D0A84049E1A737848EECB6B
- 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
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Event Triggered Execution: Image File Execution Options Injection
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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
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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