General
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Target
MasonClient.exe
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Size
50KB
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Sample
250302-2tw2yaxzcy
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MD5
b3764ad5be75af9e28fa4d68a5375481
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SHA1
786817e5231040cfa17d943070954d0ece9df7e7
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SHA256
e1ad2a54762c18ab7dad710a0518806eb2371e773768d5e68ebe104d17681707
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SHA512
e1552b6a85dc3020655a23c705ebce17be2ffa7a2fe1328c535a643bfc9315ad9ce31932edad6d0f1804082afa3164580771b20fd490f770cd11c8a079a52586
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SSDEEP
768:WDdIS0QryMZEijZ+3LaXBEp98WBu/h5bX2PfnjLMgt/X6slBs8hJOPI9zuR:2dItQrOit+3mREYbXmbLf/PbOauR
Behavioral task
behavioral1
Sample
MasonClient.exe
Resource
win10v2004-20250217-en
Malware Config
Extracted
xworm
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install_file
USB.exe
Extracted
https://github.com/charlie-60/R/raw/refs/heads/main/MasonRootkit.exe
https://raw.githubusercontent.com/ninhpn1337/Disable-Windows-Defender/main/source.bat
Targets
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Target
MasonClient.exe
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Size
50KB
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MD5
b3764ad5be75af9e28fa4d68a5375481
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SHA1
786817e5231040cfa17d943070954d0ece9df7e7
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SHA256
e1ad2a54762c18ab7dad710a0518806eb2371e773768d5e68ebe104d17681707
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SHA512
e1552b6a85dc3020655a23c705ebce17be2ffa7a2fe1328c535a643bfc9315ad9ce31932edad6d0f1804082afa3164580771b20fd490f770cd11c8a079a52586
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SSDEEP
768:WDdIS0QryMZEijZ+3LaXBEp98WBu/h5bX2PfnjLMgt/X6slBs8hJOPI9zuR:2dItQrOit+3mREYbXmbLf/PbOauR
Score10/10-
Detect Xworm Payload
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Suspicious use of NtCreateUserProcessOtherParentProcess
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Xworm family
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Blocklisted process makes network request
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Downloads MZ/PE file
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Sets service image path in registry
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE
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Legitimate hosting services abused for malware hosting/C2
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Drops file in System32 directory
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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1