General
- Target WindowsSandBox.exe
- Size 48KB
- Sample260730-dgnb9sbq6s
- SHA256 497d005f91b0cce9cfe3c1536cb87a40a0c43f372eecd162bb85cba3994d521e
- MD5 760c5087171da4e529945b7678e004ff
- SHA1 e1a17951f63a445191038542a2346b9da5bca129
- SHA512 750f04d0d187e302510b9129898b683bed77f0559b050643609291be5725adc740514c234b2b0573271df79aa1b6acc63cfbb72796d805c2e6fdbf3c6db4faec
- SSDEEP 768:OYwn8bT4W24uAZpg1yqZ9Urn4l9Fx/sbeVYu0CpLWAmhLOU2buXI:OYw8bUR4uAwyG9hpx0beuu0Gc1Oru4
- TLSH T1BB230949B7A59521C4FF56B12E73634887F06A979416C70F7CD842CB3726B988680EF3
- MD5 SHA1 SHA512 SSDEEP TLSH
Behavioral task
behavioral1
Sample
WindowsSandBox.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
WindowsSandBox.exe
Resource
win11ltsc2024-20260709-en
Malware Config
Extracted
-
neptunerat
-
viperalza7fgg-63977.portmap.host:63977
-
filename
USB.exe
-
group
MasonGroup
-
key
cKY1lhwnkNDQ0qpS
-
rat_name
MasonRAT
Targets
-
- Target WindowsSandBox.exe
- Size 48KB
- SHA256 497d005f91b0cce9cfe3c1536cb87a40a0c43f372eecd162bb85cba3994d521e
- MD5 760c5087171da4e529945b7678e004ff
- SHA1 e1a17951f63a445191038542a2346b9da5bca129
- SHA512 750f04d0d187e302510b9129898b683bed77f0559b050643609291be5725adc740514c234b2b0573271df79aa1b6acc63cfbb72796d805c2e6fdbf3c6db4faec
- SSDEEP 768:OYwn8bT4W24uAZpg1yqZ9Urn4l9Fx/sbeVYu0CpLWAmhLOU2buXI:OYw8bUR4uAwyG9hpx0beuu0Gc1Oru4
- TLSH T1BB230949B7A59521C4FF56B12E73634887F06A979416C70F7CD842CB3726B988680EF3
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Detects NeptuneRAT stealer
-
Suspicious use of NtCreateUserProcessOtherParentProcess
-
Sets service image path in registry
This determines the executable launched when a service starts. It can be used to establish persistence.
-
Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
-
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
-
Executes dropped EXE
-
Indicator Removal: Clear Windows Event Logs
Clear Windows Event Logs to hide the activity of an intrusion.
-
Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
-
Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
-
Drops file in System32 directory
-
Suspicious use of SetThreadContext
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Defense Evasion
Indicator Removal
1Clear Windows Event Logs
1Modify Registry
1Pre-OS Boot
1Bootkit
1