3e01371b1b14c810037d23628669491864ffa51a0bf766c4c33b92d1e7f7a40e

Analysis

max time kernel
149s
max time network
126s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
24/10/2026, 16:07

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General

Target
Masterstrap.exe
Size 213KB
Sample261024-tkwe2szy7k
SHA256 3e01371b1b14c810037d23628669491864ffa51a0bf766c4c33b92d1e7f7a40e
MD5 f6fda441ef1b709ca0a69f90ef8743be
SHA1 e9d3e53898afbb5d5efe618979cf510d2516c2b9
SHA512 8bf7147d2315eb8aa8ccb20291e36c251ab061c1992421fd27ce023ccfbfedcab29c9cd84cd707392bbff939b59ba7cf99faf5489ffc636a9bb58e53d0d048e8
SSDEEP 3072:RqvmgiYSo4k8uIPzlSRwa/5B26m9Ig4k+F45ZVKygjGSqcRqA8EH5pW:R6ok83LlMvvqIgS456yY1HT
TLSH
T1E3248D07E2AC51BEE1B7C679C9924C41FB7278158B71A7CF07504AB61E77AD0AE39302
MD5 SHA1 SHA512 SSDEEP TLSH

Score

6^/10

discovery

Malware Config

Signatures

Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs

Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

Web Service

T1102

flow	ioc
1	raw.githubusercontent.com
8	raw.githubusercontent.com

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	Masterstrap.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	Masterstrap.exe

Modifies registry class 19 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4280978039-528710165-233981602-1000_Classes\roblox	Masterstrap.exe
Key created	\REGISTRY\USER\S-1-5-21-4280978039-528710165-233981602-1000_Classes\roblox\shell	Masterstrap.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4280978039-528710165-233981602-1000_Classes\roblox-player\shell\open\command\ = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Masterstrap.exe\" \"%1\""	Masterstrap.exe
Key created	\REGISTRY\USER\S-1-5-21-4280978039-528710165-233981602-1000_Classes\roblox-player\shell	Masterstrap.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4280978039-528710165-233981602-1000_Classes\roblox\ = "URL:Masterstrap Roblox Protocol Handler"	Masterstrap.exe
Key created	\REGISTRY\USER\S-1-5-21-4280978039-528710165-233981602-1000_Classes\roblox\shell\open\command	Masterstrap.exe
Key created	\REGISTRY\USER\S-1-5-21-4280978039-528710165-233981602-1000_Classes\roblox\DefaultIcon	Masterstrap.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4280978039-528710165-233981602-1000_Classes\roblox\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Masterstrap.exe,0"	Masterstrap.exe
Key created	\REGISTRY\USER\S-1-5-21-4280978039-528710165-233981602-1000_Classes\roblox-player	Masterstrap.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4280978039-528710165-233981602-1000_Classes\roblox-player\ = "URL:Masterstrap Roblox Protocol Handler"	Masterstrap.exe
Key created	\REGISTRY\MACHINE\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-4280978039-528710165-233981602-1000\{A13A60B5-2F0C-44CE-B30C-87808F76D8F8}	Masterstrap.exe
Key created	\REGISTRY\USER\S-1-5-21-4280978039-528710165-233981602-1000_Classes\roblox\shell\open	Masterstrap.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4280978039-528710165-233981602-1000_Classes\roblox\shell\open\command\ = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Masterstrap.exe\" \"%1\""	Masterstrap.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4280978039-528710165-233981602-1000_Classes\roblox-player\URL Protocol	Masterstrap.exe
Key created	\REGISTRY\USER\S-1-5-21-4280978039-528710165-233981602-1000_Classes\roblox-player\shell\open	Masterstrap.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4280978039-528710165-233981602-1000_Classes\roblox-player\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Masterstrap.exe,0"	Masterstrap.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4280978039-528710165-233981602-1000_Classes\roblox\URL Protocol	Masterstrap.exe
Key created	\REGISTRY\USER\S-1-5-21-4280978039-528710165-233981602-1000_Classes\roblox-player\shell\open\command	Masterstrap.exe
Key created	\REGISTRY\USER\S-1-5-21-4280978039-528710165-233981602-1000_Classes\roblox-player\DefaultIcon	Masterstrap.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4872	Masterstrap.exe
4872	Masterstrap.exe
4872	Masterstrap.exe
4872	Masterstrap.exe
4872	Masterstrap.exe
4872	Masterstrap.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4872	Masterstrap.exe

C:\Users\Admin\AppData\Local\Temp\Masterstrap.exe
"C:\Users\Admin\AppData\Local\Temp\Masterstrap.exe"
1⤵
- Reads the TCP/IP host and domain name from the registry
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4872

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

Masterstrap.ico

Path C:\Users\Admin\AppData\Local\Masterstrap\CursorPack\Masterstrap.ico
Size 65KB
SHA256 925dfb0ea89acc2585e8fd2d1b8731153fac12d305c62e26ffdb7d4b8d9ed773
MD5 6565abaa16338525ba71dcd638b7c9a5
SHA1 e2c652f4504ce35779db1446fb07349f5afca48d
SHA512 a99570644c1709157a9b9b22026286d9c9b23c8bd218d757b6cd6f3243adf0ab3ea58cf0a3847159eea5b5a67194ce7b441fb9049851ad89a87dbdb6fcbd3c53
SSDEEP 1536:4krpdqnFw/5cSVKygj1JyvaqcR60G0QAajEH9sf8Owz2F:4k+F45ZVKygjGSqcRqA8EH5pw
TLSH
T12B630274E7387AFA0A9E46EFE00B1470003D0A11FE13A689DF797773A59850EAC95D36
MD5 SHA1 SHA512 SSDEEP TLSH

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Masterstrap_runtime.log

Path C:\Users\Admin\AppData\Local\Temp\Masterstrap_runtime.log
Size 248B
SHA256 72a8022ca6cadea0b171916eccf5dad14a1b302a5e02d84561df83b8f4174338
MD5 269fd28e770ca2fc4615c12492fd1ff7
SHA1 7d6e0d7f5310d766aa7e742c1be3614ab7f23556
SHA512 6ab2bea76dd2ddf4518e3fd3a5459ffd94b617549110f5b9997b77b5a55cafa972fdb0ae3059f09be3444848d0dca8176415edea0d00df4a1eafe80e2fe4af17
TLSH
T13ED02B5785C8125709E01D4778949A094EBE09469134E058119092101621C2C79FE878
MD5 SHA1 SHA512 TLSH

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account-manager-ui.json

Path C:\Users\Admin\AppData\Roaming\Masterstrap\account-manager-ui.json
Size 2B
SHA256 44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a
MD5 99914b932bd37a50b983c5e7c90ae93b
SHA1 bf21a9e8fbc5a3846fb05b4fa0859e0917b2202f
SHA512 27c74670adb75075fad058d5ceaf7b20c4e7786c83bae8a32f626f9782af34c9a33c2046ef60fd2a7878d378e29fec851806bbd9a67878f3a9f1cda4830763fd
MD5 SHA1 SHA512

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