Analysis
- max time kernel
2s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
20/04/2026, 15:32
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
MasonMBR.exe
Resource
win10ltsc2021-20260130-en
3 signatures
150 seconds
Behavioral task
behavioral2
Sample
MasonMBR.exe
Resource
win11-20260130-en
3 signatures
150 seconds
Errors
Reason
Machine shutdown
General
- Target MasonMBR.exe
- Size 93KB
- Sample260420-sypc8aas7s
- SHA256 190e70e1df7f1b7b526c557c0ef0da3b67d3da130a56dc52666a65266b8146af
- MD5 03eadaa6ca74c654b50d544ead5350af
- SHA1 383fdb5317129f46bc5ec164a481563d941f6ddf
- SHA512 404ea870675104ed57d8c87f380abcf2658e5e4c201dfe157dee0ab040f80f425395b5d74ed695f0b3bebdf9c178fe04827dbe5afa686932a24be99a3619f20b
- SSDEEP 1536:CmwoXyoci5SjY3SaRO7IPqifrJxdhGZCJjmGasWhQcdQ5/hO2o8fpP3ybZD:Tv5MYRIMPqiTJx+ZqreRQ5/hXoQP3ybl
- TLSH T1D5936C43B9D288B1E5B21D301871CAA19A6FB9210E748E6B3394177E5F340D19E36FB7
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
6/10
Malware Config
Signatures
- Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
description ioc Process File opened for modification \??\PhysicalDrive0 MasonMBR.exe - 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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language MasonMBR.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeShutdownPrivilege 1868 MasonMBR.exe