General
- Target ourcontest.io_chrome.exe
- Size 57KB
- Sample260905-gt4fssfm6y
- SHA256 4fa8ec1cab7e540011e905176420f2eb8748dcfbeaa3154029c22778126c5035
- MD5 bc8742954866c8fc02fc9a2848a1f5b1
- SHA1 a357b425c534edb98332d0c16782e8076bc5bb9f
- SHA512 6451ec7572868e4a175a7d89818ff9d7bb7e1e05d26becef6bb5484b84ef7dc443e09c5e44372cc1219ce0d0de32b1f534cac53a94010abe7e4a59a3dc59f700
- SSDEEP 768:Yjwie26yfCe3OEtHLsb+GyKSddiYME4uN1XXGb5fAdOTDKFum13:YjpfB/E+LKSr/b4uLXGb5feOTDuus
- TLSH T11143E64477FD4111E5BF8EBA5DB191518B33B8A7AD22C38D0AD4068E19B2B40CDA8F77
- MD5 SHA1 SHA512 SSDEEP TLSH
Behavioral task
behavioral1
Sample
ourcontest.io_chrome.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
ourcontest.io_chrome.exe
Resource
win11ltsc2024-20260709-en
Malware Config
Extracted
-
nanocore
-
1.2.2.0
-
http://ourcontest.io
-
ac7e2f05-8df7-4c55-8841-78385f6bb064
-
c2_url
http://ourcontest.io
-
default_group
xoilac
-
primary_dns
ali.ns.cloudflare.com
-
secondary_dns
woz.ns.cloudflare.com
-
version
1.2.2.0
Targets
-
- Target ourcontest.io_chrome.exe
- Size 57KB
- SHA256 4fa8ec1cab7e540011e905176420f2eb8748dcfbeaa3154029c22778126c5035
- MD5 bc8742954866c8fc02fc9a2848a1f5b1
- SHA1 a357b425c534edb98332d0c16782e8076bc5bb9f
- SHA512 6451ec7572868e4a175a7d89818ff9d7bb7e1e05d26becef6bb5484b84ef7dc443e09c5e44372cc1219ce0d0de32b1f534cac53a94010abe7e4a59a3dc59f700
- SSDEEP 768:Yjwie26yfCe3OEtHLsb+GyKSddiYME4uN1XXGb5fAdOTDKFum13:YjpfB/E+LKSr/b4uLXGb5feOTDuus
- TLSH T11143E64477FD4111E5BF8EBA5DB191518B33B8A7AD22C38D0AD4068E19B2B40CDA8F77
- 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