General
- Target GMCRY.exe
- Size 64KB
- Sample260809-ab4khsz1cs
- SHA256 a7bbd5ad19a8a722a57c921dcd61de8e639e2cbc03d97134e17f4c796badcab0
- MD5 89aa72a7830d02cfe3da2488bcfabf82
- SHA1 685a5e9fd92207f538d63e93c5dff610f58d49c7
- SHA512 857eabfe2ac7aa1b05354d65c574fcf6817160c4a09d805388bbe7b85b237155e722e6eaa4f688927a560f902d03d6810b0f0c0584223bfe9585687dc613155a
- SSDEEP 1536:hvZgPPtzJ6qleE2nWsb/80RTvsozY3bliTjVv:hvWtF6qleESWsb/80vsTbliTjB
- TLSH T1CC53F80577F88A05F1BE5B79CEB281404776B9929936D70E0DDA68CE0523F108DE2BB7
- MD5 SHA1 SHA512 SSDEEP TLSH
Static task
static1
Behavioral task
behavioral1
Sample
GMCRY.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
GMCRY.exe
Resource
win11ltsc2024-20260709-en
Malware Config
Extracted
-
C:\Users\Admin\Desktop\README.txt
- ============================================ YOUR FILES ARE ENCRYPTED ============================================ All your files have been encrypted with military-grade AES-256 encryption. To decrypt your files, you need the GMCRYDecryptor.exe which should be on your desktop. Run it and enter the decryption key. Contact us to get the decryption key: Telegram: @b8gmk Discord: ccvtrojan DO NOT: - Restart your computer - Delete any .gmcry files - Try to rename or move files If you do not decrypt within 24 hours, your files may be lost. ============================================
Targets
-
- Target GMCRY.exe
- Size 64KB
- SHA256 a7bbd5ad19a8a722a57c921dcd61de8e639e2cbc03d97134e17f4c796badcab0
- MD5 89aa72a7830d02cfe3da2488bcfabf82
- SHA1 685a5e9fd92207f538d63e93c5dff610f58d49c7
- SHA512 857eabfe2ac7aa1b05354d65c574fcf6817160c4a09d805388bbe7b85b237155e722e6eaa4f688927a560f902d03d6810b0f0c0584223bfe9585687dc613155a
- SSDEEP 1536:hvZgPPtzJ6qleE2nWsb/80RTvsozY3bliTjVv:hvWtF6qleESWsb/80vsTbliTjB
- TLSH T1CC53F80577F88A05F1BE5B79CEB281404776B9929936D70E0DDA68CE0523F108DE2BB7
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Modifies visibility of hidden/system files in Explorer
-
Adds policy Run key to start application
-
Disables RegEdit via registry modification
-
Disables Task Manager via registry modification
-
Disables cmd.exe use via registry modification
-
Event Triggered Execution: Image File Execution Options Injection
-
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.
-
Executes dropped EXE
-
Adds Run key to start application
-
Contacts third-party web service commonly abused for C2
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
-
Executes a VBScript file via the Windows Script Host.
-
Sets desktop wallpaper using registry
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2Visual Basic
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
3Event Triggered Execution
1Image File Execution Options Injection
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
3Event Triggered Execution
1Image File Execution Options Injection
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Hide Artifacts
1Hidden Files and Directories
1Indicator Removal
1Clear Persistence
1Modify Registry
4Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1