General
- Target RuntimeBroker.exe
- Size 2.8MB
- Sample261010-v7prfsysfz
- SHA256 4baf632199b6536dd6f9451794dfc27c3af05a1a5f3eba796611f931710a98aa
- MD5 651c57630f013cc011f21093963ef284
- SHA1 d861347efde38de2c74f0497af0f6aeed246d779
- SHA512 29931fd7565685e31a61229c24cba6739c24b7d1151b67494a565faf55220e53410fe25f5f428d710ee3dc4b5b3d4df0eb7916de4e9b22e6aadc17e962bedc92
- SSDEEP 49152:3ZwyUNIAYKeNC2ToLH0DkUkf7oE3beJ9rQLFgNkupu9QBDr:3ZuYKcTVCf7oE329r4g6TQ3
- TLSH T199D5F151A9908456F2494F7DA8E3360C33F8B1F79376F69B6681E8B5FD823D3084998C
- MD5 SHA1 SHA512 SSDEEP TLSH
Static task
static1
Behavioral task
behavioral1
Sample
RuntimeBroker.exe
Resource
win10ltsc2021-20260911-en
Behavioral task
behavioral2
Sample
RuntimeBroker.exe
Resource
win11-20260911-en
Malware Config
Extracted
-
xworm
-
yNحكـX8ٍبAGLWِF6Jo2DiObلٍLZا3ا
-
Install_directory
%Port%
-
install_file
MicrosoftEdgeUpdateTaskMachineUAC.exe
Extracted
-
neptunerat
-
82.47.101.109:5000
-
filename
USB.exe
-
group
MasonGroup
-
key
OBRPpzjEkVqWqo4O
-
rat_name
MasonRAT
Targets
-
- Target RuntimeBroker.exe
- Size 2.8MB
- SHA256 4baf632199b6536dd6f9451794dfc27c3af05a1a5f3eba796611f931710a98aa
- MD5 651c57630f013cc011f21093963ef284
- SHA1 d861347efde38de2c74f0497af0f6aeed246d779
- SHA512 29931fd7565685e31a61229c24cba6739c24b7d1151b67494a565faf55220e53410fe25f5f428d710ee3dc4b5b3d4df0eb7916de4e9b22e6aadc17e962bedc92
- SSDEEP 49152:3ZwyUNIAYKeNC2ToLH0DkUkf7oE3beJ9rQLFgNkupu9QBDr:3ZuYKcTVCf7oE329r4g6TQ3
- TLSH T199D5F151A9908456F2494F7DA8E3360C33F8B1F79376F69B6681E8B5FD823D3084998C
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Detect Xworm Payload
-
Detects NeptuneRAT stealer
-
Command and Scripting Interpreter: PowerShell
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
-
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
-
Executes a file named after a Windows system binary
The file runs from a user directory while carrying the name of an executable that normally only exists in System32.
-
Executes dropped EXE
-
Indicator Removal: Clear Windows Event Logs
Clear Windows Event Logs to hide the activity of an intrusion.
-
Adds Run key to start application
-
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
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Pre-OS Boot
1Bootkit
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Indicator Removal
1Clear Windows Event Logs
1Masquerading
1Match Legitimate Name or Location
1Modify Registry
1Pre-OS Boot
1Bootkit
1