General
- Target kizo.exe
- Size 84KB
- Sample260731-aqhatstscx
- SHA256 1971e5fc0bb89dcfc26a042c91d7ccb157ffa7a5877bce3f5f0f25d7b19dccea
- MD5 593ed9a299bb11b0e4a664a702d4400a
- SHA1 64b757126abe0ea93d7403745554f4e08b101644
- SHA512 5ff827cbd7c28c7a28f0e2010b8fb2d43e278cc260a2ea409753ec40be1fa945529a7848f60f184f53b697cb559e95ad8826b0686948f405ad28c6c04afd5b77
- SSDEEP 1536:FJ7XemSazAxq63OlqvsCMG9E8++AwmQVbrmtSNFVCqhfXSI2:rbegcxqRwUol9V9NfiI2
- TLSH T17483E1D09CAF68DDD9E9C7F11BE0AB41374B7502CC092A05C2657BFFAEB3610989D921
- MD5 SHA1 SHA512 SSDEEP TLSH
Static task
static1
Behavioral task
behavioral1
Sample
kizo.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
kizo.exe
Resource
win10ltsc2021-20260513-en
Behavioral task
behavioral3
Sample
kizo.exe
Resource
win11-20260513-en
Malware Config
Extracted
-
neptunerat
-
8.tcp.cpolar.top:11836
-
filename
USB.exe
-
group
MasonGroup
-
key
0c1t0BCxhtJbi3ZC
-
rat_name
MasonRAT
Targets
-
- Target kizo.exe
- Size 84KB
- SHA256 1971e5fc0bb89dcfc26a042c91d7ccb157ffa7a5877bce3f5f0f25d7b19dccea
- MD5 593ed9a299bb11b0e4a664a702d4400a
- SHA1 64b757126abe0ea93d7403745554f4e08b101644
- SHA512 5ff827cbd7c28c7a28f0e2010b8fb2d43e278cc260a2ea409753ec40be1fa945529a7848f60f184f53b697cb559e95ad8826b0686948f405ad28c6c04afd5b77
- SSDEEP 1536:FJ7XemSazAxq63OlqvsCMG9E8++AwmQVbrmtSNFVCqhfXSI2:rbegcxqRwUol9V9NfiI2
- TLSH T17483E1D09CAF68DDD9E9C7F11BE0AB41374B7502CC092A05C2657BFFAEB3610989D921
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Contains code to disable Windows Defender
A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.
-
Detects DonutLoader
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Detects NeptuneRAT stealer
-
Family: DonutLoader
DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.
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Modifies Windows Defender Real-time Protection settings
-
Disables Task Manager via registry modification
-
Drops file in Drivers directory
-
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
-
Disables service(s)
-
Executes dropped EXE
-
Loads dropped DLL
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Modifies system executable filetype association
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Uses the VBS compiler for execution
-
Drops desktop.ini file(s)
-
Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
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Drops file in System32 directory
-
Sets desktop wallpaper using registry
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1System Services
1Service Execution
1Persistence
Create or Modify System Process
2Windows Service
2Event Triggered Execution
1Change Default File Association
1Pre-OS Boot
1Bootkit
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Create or Modify System Process
2Windows Service
2Event Triggered Execution
1Change Default File Association
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Impair Defenses
1Disable or Modify Tools
1Modify Registry
3Pre-OS Boot
1Bootkit
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1