General
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Target
_$RHB6IUX
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Size
221KB
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Sample
250113-nest3szmh1
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MD5
8288e3c2e95bc91e8594c8e23cab5a12
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SHA1
ee18b73b5584050165d63d607d4f6948cc6bf490
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SHA256
7c5fd9a2e93ad94d0b9edbb3921459c102de60e1af2fd0339c4777289fb305d8
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SHA512
718d90baeeb7ea290a3956d03f1e23a304c7d4e3838538adc85c1e50ebc68239de3fa4b137e0d72350436b509fbda2380540b0b7cea2ec517efe89b6cdf85df6
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SSDEEP
6144:k9lyzjvbzNdX5EWITq2UCNBGgaoSbR5U7rwN02X:l/FdXFf2UKBGgaoSVxXX
Behavioral task
behavioral1
Sample
_$RHB6IUX.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
_$RHB6IUX.exe
Resource
win10v2004-20241007-en
Malware Config
Extracted
C:\Program Files\Common Files\microsoft shared\ink\es-ES\readme_for_unlock.txt
https://gdpr-info.eu/
http://ssl7iq25hyqyhjqtja3et5om3dczfh3khpvzkj7undaryzem2ks7akid.onion
Targets
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Target
_$RHB6IUX
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Size
221KB
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MD5
8288e3c2e95bc91e8594c8e23cab5a12
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SHA1
ee18b73b5584050165d63d607d4f6948cc6bf490
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SHA256
7c5fd9a2e93ad94d0b9edbb3921459c102de60e1af2fd0339c4777289fb305d8
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SHA512
718d90baeeb7ea290a3956d03f1e23a304c7d4e3838538adc85c1e50ebc68239de3fa4b137e0d72350436b509fbda2380540b0b7cea2ec517efe89b6cdf85df6
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SSDEEP
6144:k9lyzjvbzNdX5EWITq2UCNBGgaoSbR5U7rwN02X:l/FdXFf2UKBGgaoSVxXX
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Detect Neshta payload
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Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
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Neshta family
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Renames multiple (8119) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Disables Task Manager via registry modification
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Modifies Windows Firewall
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Credentials from Password Stores: Windows Credential Manager
Suspicious access to Credentials History.
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Drops startup file
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Executes dropped EXE
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Loads dropped DLL
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Modifies system executable filetype association
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Adds Run key to start application
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Drops desktop.ini file(s)
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Sets desktop wallpaper using registry
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
2Change Default File Association
1Netsh Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
2Change Default File Association
1Netsh Helper DLL
1Defense Evasion
Impair Defenses
1Disable or Modify System Firewall
1Modify Registry
4Credential Access
Credentials from Password Stores
2Credentials from Web Browsers
1Windows Credential Manager
1Unsecured Credentials
1Credentials In Files
1