General
- Target 3DSeriesGG116.1.0Setup (1).rar
- Size 403.7MB
- Sample261103-wd3a5atzbs
- SHA256 cf1e8c47e318fe077dc1f19a3e72f6bc380dc445574e0868006648acbcddfdce
- MD5 fa7d82c78eb5f62ee05d4589c853cabd
- SHA1 e37abbfec6c22c26d52c36b6a85595db31e92172
- SHA512 4de40a398f6b49d628199a7a05900e7897ed18eda1504fed13d4deeb53bfa388017468181b84a38d755545f3a81c155e497ea69a940d2bb09687853db2369c14
- SSDEEP 12582912:FMCPNZSsP+pG9GLU0l1cC4YZQPHFPl1Gg:FMCDSQamlPlR
- TLSH T13E193344EBA86D4564002867929C7CAF9FBDDE1C4B7290FA825241C4F175BE325FF8E8
- MD5 SHA1 SHA512 SSDEEP TLSH
Static task
static1
Behavioral task
behavioral1
Sample
3DSeriesGG116.1.0Setup (1).rar
Resource
win10ltsc2021-20260911-en
Behavioral task
behavioral2
Sample
3DSeriesGG116.1.0Setup (1).rar
Resource
win11-20260911-en
Behavioral task
behavioral3
Sample
3DSeriesGG116.1.0Setup (1).rar
Resource
win11ltsc2024-20260911-en
Malware Config
Extracted
-
neptunerat
-
82.22.62.40:666
-
filename
MasonUSB.exe
-
group
MasonGroup
-
key
PZySUSuxlU9MhXcx
-
rat_name
MasonRAT
Targets
-
- Target 3DSeriesGG116.1.0Setup (1).rar
- Size 403.7MB
- SHA256 cf1e8c47e318fe077dc1f19a3e72f6bc380dc445574e0868006648acbcddfdce
- MD5 fa7d82c78eb5f62ee05d4589c853cabd
- SHA1 e37abbfec6c22c26d52c36b6a85595db31e92172
- SHA512 4de40a398f6b49d628199a7a05900e7897ed18eda1504fed13d4deeb53bfa388017468181b84a38d755545f3a81c155e497ea69a940d2bb09687853db2369c14
- SSDEEP 12582912:FMCPNZSsP+pG9GLU0l1cC4YZQPHFPl1Gg:FMCDSQamlPlR
- TLSH T13E193344EBA86D4564002867929C7CAF9FBDDE1C4B7290FA825241C4F175BE325FF8E8
- MD5 SHA1 SHA512 SSDEEP TLSH
Detects NeptuneRAT stealer
Detects Umbral payload
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
Executes dropped EXE
Loads dropped DLL
Adds Run key to start application
Contacts third-party web service commonly abused for C2
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
MITRE ATT&CK Enterprise v16
Execution
Scheduled Task/Job
1Scheduled Task
1Windows Management Instrumentation
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1