Analysis
- user interaction
yes - max time kernel
8s - max time network
10s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
25/06/2026, 20:05
General
- Target MasonRAT.exe
- Size 17.6MB
- Sample260625-yvanjsfv2m
- SHA256 f259428898724d766ddfc70b5822595f89638e9951d5aadd683eda82d2b90009
Malware Config
Signatures
- Family: Xworm
Xworm is a remote access trojan written in C#.
- Detect Xworm Payload 2 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Drops startup file 2 IoCs
- Executes dropped EXE 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\MasonRAT.exe"C:\Users\Admin\AppData\Local\Temp\MasonRAT.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\MasonRAT.exe"C:\Users\Admin\AppData\Roaming\MasonRAT.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 6012 -s 12683⤵
- Program crash
-
-
-
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 6012 -ip 60121⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
MasonRAT.exe
svchost.exe
memory/536-26-0x0000000000140000-0x000000000015C000-memory.dmp
memory/4720-0-0x0000000000630000-0x00000000017C6000-memory.dmp
memory/6012-27-0x0000000000690000-0x000000000180E000-memory.dmp
memory/6012-29-0x0000000007380000-0x000000000836C000-memory.dmp
memory/6012-30-0x000000000BCB0000-0x000000000C254000-memory.dmp
memory/6012-31-0x0000000008410000-0x00000000084A2000-memory.dmp
memory/6012-32-0x00000000084B0000-0x000000000854C000-memory.dmp