General
- Target MasonClient (12).exe
- Size 58KB
- Sample260812-ffgjfaan4x
- SHA256 ee91e58de7b4ed20fc58ee2e9322a98b4e13b406be3915458e5bb706aa7dc565
- MD5 6ddf0e310f156da608f4cb471c55c789
- SHA1 ab3b088053152918c966dcc4c84eb6bd6e5bc680
- SHA512 9433df06b628da5e5093fcf65af4ba9722ed5ba476ebe396affd8de1019eae3c3875994e585d31c42c30cd295d7c1f729110c537a5552375a04a5546a630fb90
- SSDEEP 1536:b0aHLv+hdGg4mgdyh7NMGNNhkvXgLYqqI4:gaHj+0jmmGHcXZqqB
- TLSH T1E443F90BF35364ECC51AC6B486EB6673BA31BD6600355F3F4754D6712E10F20AE6AB28
- MD5 SHA1 SHA512 SSDEEP TLSH
Static task
static1
Behavioral task
behavioral1
Sample
MasonClient (12).exe
Resource
win10ltsc2021-20260513-en
Malware Config
Targets
-
- Target MasonClient (12).exe
- Size 58KB
- SHA256 ee91e58de7b4ed20fc58ee2e9322a98b4e13b406be3915458e5bb706aa7dc565
- MD5 6ddf0e310f156da608f4cb471c55c789
- SHA1 ab3b088053152918c966dcc4c84eb6bd6e5bc680
- SHA512 9433df06b628da5e5093fcf65af4ba9722ed5ba476ebe396affd8de1019eae3c3875994e585d31c42c30cd295d7c1f729110c537a5552375a04a5546a630fb90
- SSDEEP 1536:b0aHLv+hdGg4mgdyh7NMGNNhkvXgLYqqI4:gaHj+0jmmGHcXZqqB
- TLSH T1E443F90BF35364ECC51AC6B486EB6673BA31BD6600355F3F4754D6712E10F20AE6AB28
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Command and Scripting Interpreter: PowerShell
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
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Downloads MZ/PE file
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Event Triggered Execution: Component Object Model Hijacking
Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.
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Executes dropped EXE
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Loads dropped DLL
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Modifies system executable filetype association
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Prevents Microsoft Defender from scanning certain paths by adding an exclusion.
Uses the Powershell Add-MpPreference cmdlet to exclude paths from being scanned by Microsoft Defender.
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Adds Run key to start application
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
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
1Event Triggered Execution
2Change Default File Association
1Component Object Model Hijacking
1Pre-OS Boot
1Bootkit
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
2Change Default File Association
1Component Object Model Hijacking
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Hide Artifacts
2File/Path Exclusions
1Ignore Process Interrupts
1Impair Defenses
1Disable or Modify Tools
1Modify Registry
2Pre-OS Boot
1Bootkit
1