General
- Target ugbvxgnp.exe
- Size 53KB
- Sample260805-f2ft2aea95
- SHA256 7043ebcb444a82382829c529564093769cb30c5ee0ea1871e64a26988619de92
- MD5 8878cc0dcb3043b8ed8f3026414f6d41
- SHA1 a5ce2c3eca0aa5b12b7b05bfb2b42cfad065753f
- SHA512 e136f92ca14681c55161a0e0e4521747830eab30310c1c29af4f9b26a0463dbef6b95c25291b508110b812ef29223d50bf42f886cdc6211a8e949f0e901e182f
- SSDEEP 1536:ayz/c7EVtUvsfUlUbUUZ95sVbmXOckXOcAXOcYXOc9XOcvo8+UODUk+KmOrmtXOM:ayz/c7EVtUvsfUlUbUULKVbmXOckXOcr
- TLSH T1D633D68DE7D90121D6BF5EB519B3024887F0BAD34816C62F7CD851CB2B26B984691FE3
- MD5 SHA1 SHA512 SSDEEP TLSH
Behavioral task
behavioral1
Sample
ugbvxgnp.exe
Resource
win10v2004-20260513-en
15 signatures
150 seconds
Behavioral task
behavioral2
Sample
ugbvxgnp.exe
Resource
win11ltsc2024-20260709-en
10 signatures
150 seconds
Malware Config
Extracted
Family
-
neptunerat
C2
-
143.14.44.56:1417
Attributes
-
filename
USB.exe
-
group
MasonGroup
-
key
x7Dn8m346c6Sf2ow
-
rat_name
MasonRAT
Targets
-
- Target ugbvxgnp.exe
- Size 53KB
- SHA256 7043ebcb444a82382829c529564093769cb30c5ee0ea1871e64a26988619de92
- MD5 8878cc0dcb3043b8ed8f3026414f6d41
- SHA1 a5ce2c3eca0aa5b12b7b05bfb2b42cfad065753f
- SHA512 e136f92ca14681c55161a0e0e4521747830eab30310c1c29af4f9b26a0463dbef6b95c25291b508110b812ef29223d50bf42f886cdc6211a8e949f0e901e182f
- SSDEEP 1536:ayz/c7EVtUvsfUlUbUUZ95sVbmXOckXOcAXOcYXOc9XOcvo8+UODUk+KmOrmtXOM:ayz/c7EVtUvsfUlUbUULKVbmXOckXOcr
- TLSH T1D633D68DE7D90121D6BF5EB519B3024887F0BAD34816C62F7CD851CB2B26B984691FE3
- 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 NeptuneRAT stealer
-
Modifies Windows Defender Real-time Protection settings
-
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
-
Executes dropped EXE
-
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.
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Scheduled Task
1