General
- Target fyblo.com_chrome.exe
- Size 57KB
- Sample261023-rp3ntaev2k
- SHA256 96ac50f540a929ffa51d0845136313d367ad545765afa7e53717558d555bf717
- MD5 d592d7a02c9b6addd38dda6a308b542a
- SHA1 a56d290f13905331dd53b467824522c29726076c
- SHA512 da5fe0cc50810fdbf9245be2462cc40dc9556b0b6a876522fe6acf6815298a353f2e0c714b64fcd3ac670aa939153d02680c9ef371545d474478d1a3887dd414
- SSDEEP 768:c1looaNMFTCCL2/p05KFweXHdnYMP49N1XXGb5fAdOTdKFum14:c1+93CyEKhX9Y449LXGb5feOTduuT
- TLSH T10D43D64473FD4511F2BF8EBA4DB191514732B8A7AD32D78E06D4068E09B2B44CAA8F77
- MD5 SHA1 SHA512 SSDEEP TLSH
Behavioral task
behavioral1
Sample
fyblo.com_chrome.exe
Resource
win10v2004-20260911-en
Behavioral task
behavioral2
Sample
fyblo.com_chrome.exe
Resource
win11ltsc2024-20260911-en
Malware Config
Extracted
-
nanocore
-
1.2.2.0
-
http://fyblo.com
-
ac7e2f05-8df7-4c55-8841-78385f6bb064
-
c2_url
http://fyblo.com
-
default_group
xoilac
-
primary_dns
ali.ns.cloudflare.com
-
secondary_dns
woz.ns.cloudflare.com
-
version
1.2.2.0
Targets
-
- Target fyblo.com_chrome.exe
- Size 57KB
- SHA256 96ac50f540a929ffa51d0845136313d367ad545765afa7e53717558d555bf717
- MD5 d592d7a02c9b6addd38dda6a308b542a
- SHA1 a56d290f13905331dd53b467824522c29726076c
- SHA512 da5fe0cc50810fdbf9245be2462cc40dc9556b0b6a876522fe6acf6815298a353f2e0c714b64fcd3ac670aa939153d02680c9ef371545d474478d1a3887dd414
- SSDEEP 768:c1looaNMFTCCL2/p05KFweXHdnYMP49N1XXGb5fAdOTdKFum14:c1+93CyEKhX9Y449LXGb5feOTduuT
- TLSH T10D43D64473FD4511F2BF8EBA4DB191514732B8A7AD32D78E06D4068E09B2B44CAA8F77
- 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.
-
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
-
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
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
Boot 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
1Privilege Escalation
Boot 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
Direct 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