General
- Target 2026-08-05_4df115346fcb2d5991d30e91c64126d5_mespinoza
- Size 1.3MB
- Sample260805-w92dpstekd
- SHA256 633cffde2b29b2187be76b4a70f6376f659519edac3f66c7a22a7fc96c111eeb
- MD5 4df115346fcb2d5991d30e91c64126d5
- SHA1 248749834a7fbbd7c406133574022055abf0dd12
- SHA512 e5c932412c225b32e54798350cf7ae3f80140f611a37b03efd48b8d62fef1e43a6ff5cc1f8d86bef8dd15c6bb6cf02e32f183874dbba1dec06d8ebae127a8f1c
- SSDEEP 12288:bS3TV6GEZNM2s9ZsOMnLMPNbld5lVvYRMFlvZAYp:7GEYsZLW5lkoZLp
- TLSH T13855C541B6A80895FCAE9D7489668675FA32BD9F3D2DB30F1C50B22F1E338D05E25721
- MD5 SHA1 SHA512 SSDEEP TLSH
Static task
static1
Behavioral task
behavioral1
Sample
2026-08-05_4df115346fcb2d5991d30e91c64126d5_mespinoza.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
2026-08-05_4df115346fcb2d5991d30e91c64126d5_mespinoza.exe
Resource
win11ltsc2024-20260709-en
Malware Config
Targets
-
- Target 2026-08-05_4df115346fcb2d5991d30e91c64126d5_mespinoza
- Size 1.3MB
- SHA256 633cffde2b29b2187be76b4a70f6376f659519edac3f66c7a22a7fc96c111eeb
- MD5 4df115346fcb2d5991d30e91c64126d5
- SHA1 248749834a7fbbd7c406133574022055abf0dd12
- SHA512 e5c932412c225b32e54798350cf7ae3f80140f611a37b03efd48b8d62fef1e43a6ff5cc1f8d86bef8dd15c6bb6cf02e32f183874dbba1dec06d8ebae127a8f1c
- SSDEEP 12288:bS3TV6GEZNM2s9ZsOMnLMPNbld5lVvYRMFlvZAYp:7GEYsZLW5lkoZLp
- TLSH T13855C541B6A80895FCAE9D7489668675FA32BD9F3D2DB30F1C50B22F1E338D05E25721
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Renames multiple (10321) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
-
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.
-
Credentials from Password Stores: Windows Credential Manager
Suspicious access to Credentials History.
-
Executes dropped EXE
-
Adds Run key to start application
-
Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
MITRE ATT&CK Enterprise v16
Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Credential Access
Credentials from Password Stores
2Credentials from Web Browsers
1Windows Credential Manager
1Unsecured Credentials
1Credentials In Files
1