Analysis
- user interaction
yes - max time kernel
69s - max time network
71s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
12/09/2026, 10:41
General
- Target Rbx2Source.exe
- Size 8.2MB
- Sample260912-mrkhssxtct
- SHA256 43298ca3117a32a1081009466e3b006f106d53eb6ab1de6f9dbf2fbd67a68cc8
Malware Config
Signatures
- Executes dropped EXE 2 IoCs
- Contacts third-party web service commonly abused for C2 1 TTPs 3 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
- Costura .NET executable packer 1 IoCs
Costura packer aka Costura Fody, is an add-in for the .NET framework that embeds all external dependency .dll files as resources inside main executable.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Rbx2Source.exe"C:\Users\Admin\AppData\Local\Temp\Rbx2Source.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\NEW_Rbx2Source.exe"C:\Users\Admin\AppData\Local\Temp\NEW_Rbx2Source.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\Rbx2Source.exe"C:\Users\Admin\AppData\Local\Temp\Rbx2Source.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
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-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
NEW_Rbx2Source.exe
memory/1956-0-0x00000000746C2000-0x00000000746C3000-memory.dmp
memory/1956-1-0x0000000000780000-0x0000000000FB2000-memory.dmp
memory/1956-2-0x0000000006240000-0x00000000067FA000-memory.dmp
memory/1956-3-0x0000000005B50000-0x0000000005BE2000-memory.dmp
memory/1956-4-0x0000000005B10000-0x0000000005B1A000-memory.dmp
memory/1956-5-0x00000000746B0000-0x0000000074E6C000-memory.dmp
memory/1956-17-0x00000000746B0000-0x0000000074E6C000-memory.dmp
memory/1956-16-0x00000000746B0000-0x0000000074E6C000-memory.dmp
memory/4664-18-0x00000000746B0000-0x0000000074E6C000-memory.dmp
memory/4664-19-0x00000000746B0000-0x0000000074E6C000-memory.dmp
memory/4664-21-0x00000000746B0000-0x0000000074E6C000-memory.dmp