General
- Target 2026-08-21_d1b8d8e3d89239c288e51b64d674735c_mespinoza
- Size 1.9MB
- Sample260822-fw8mvser3s
- SHA256 2f9b7b8b2d14986f075fa54675be7d2b549f1fbbba1cec0f0e763e14a5d609ed
- MD5 d1b8d8e3d89239c288e51b64d674735c
- SHA1 0efc2e02c6963303a5cd4642abe29e0bbd115682
- SHA512 a949b160ebc4e07faf52f3a91a9fb63a3bd49377d6832ab8b1cc4dd3262a84d4cba8e673e81aa3c331d0b9b9529ae5a395fc95102f55439de2f50d70f308f998
- SSDEEP 24576:nzEGIGzZj9hpWFamF0patgCRQO7ZzA4Mj/aq4:nwGIGzZTpq4gyCtiJDH4
- TLSH T12495F70532E880E5EC5E4E7189A196BAF672BC8FBD2DB20F1C65325E1F335D11D1A722
- MD5 SHA1 SHA512 SSDEEP TLSH
Static task
static1
Behavioral task
behavioral1
Sample
2026-08-21_d1b8d8e3d89239c288e51b64d674735c_mespinoza.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
2026-08-21_d1b8d8e3d89239c288e51b64d674735c_mespinoza.exe
Resource
win11ltsc2024-20260709-en
Malware Config
Targets
-
- Target 2026-08-21_d1b8d8e3d89239c288e51b64d674735c_mespinoza
- Size 1.9MB
- SHA256 2f9b7b8b2d14986f075fa54675be7d2b549f1fbbba1cec0f0e763e14a5d609ed
- MD5 d1b8d8e3d89239c288e51b64d674735c
- SHA1 0efc2e02c6963303a5cd4642abe29e0bbd115682
- SHA512 a949b160ebc4e07faf52f3a91a9fb63a3bd49377d6832ab8b1cc4dd3262a84d4cba8e673e81aa3c331d0b9b9529ae5a395fc95102f55439de2f50d70f308f998
- SSDEEP 24576:nzEGIGzZj9hpWFamF0patgCRQO7ZzA4Mj/aq4:nwGIGzZTpq4gyCtiJDH4
- TLSH T12495F70532E880E5EC5E4E7189A196BAF672BC8FBD2DB20F1C65325E1F335D11D1A722
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Renames multiple (10363) 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