Analysis
- max time kernel
149s - max time network
149s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
- submitted
28/07/2026, 19:55
General
- Target VisualStudioSetup.exe
- Size 4.2MB
- Sample260728-ym477awvey
- SHA256 451d3a000fd37fb759ab3bf72171ae42932fbb07166add9a6a86e85325e3f673
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
- Loads dropped DLL 21 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\VisualStudioSetup.exe"C:\Users\Admin\AppData\Local\Temp\VisualStudioSetup.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\f53ecf446a59ad879ea50580e088\vs_bootstrapper_d15\vs_setup_bootstrapper.exe"C:\Users\Admin\AppData\Local\Temp\f53ecf446a59ad879ea50580e088\vs_bootstrapper_d15\vs_setup_bootstrapper.exe" --env "_SFX_CAB_EXE_PACKAGE:C:\Users\Admin\AppData\Local\Temp\VisualStudioSetup.exe _SFX_CAB_EXE_ORIGINALWORKINGDIR:C:\Users\Admin\AppData\Local\Temp"2⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\getmac.exe"getmac"3⤵
- System Location Discovery: System Language Discovery
-
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
vs_setup_bootstrapper_202607282055195357.json
20260728195551_d23b283da76546c6aee0eedfd4c2a371.trn
Microsoft.C2RSignatureReader.Interop.dll
Microsoft.C2RSignatureReader.Native.dll
Microsoft.VisualStudio.RemoteControl.dll
Microsoft.VisualStudio.Setup.Common.dll
Microsoft.VisualStudio.Setup.Download.dll
Microsoft.VisualStudio.Setup.dll
Microsoft.VisualStudio.Telemetry.dll
Microsoft.VisualStudio.Utilities.Internal.dll
Newtonsoft.Json.dll
System.Memory.dll
System.Runtime.CompilerServices.Unsafe.dll
detection.json
vs_setup_bootstrapper.config
vs_setup_bootstrapper.exe
vs_setup_bootstrapper.exe.config
memory/2120-152-0x00000000055F0000-0x00000000055F8000-memory.dmp
memory/2120-167-0x0000000006960000-0x00000000069C6000-memory.dmp
memory/2120-164-0x0000000005CA0000-0x0000000005CC2000-memory.dmp
memory/2120-156-0x0000000005AA0000-0x0000000005AB0000-memory.dmp
memory/2120-148-0x0000000005600000-0x0000000005626000-memory.dmp
memory/2120-140-0x0000000005690000-0x0000000005742000-memory.dmp
memory/2120-144-0x0000000005420000-0x0000000005434000-memory.dmp
memory/2120-136-0x0000000005440000-0x0000000005450000-memory.dmp
memory/2120-135-0x0000000005120000-0x0000000005170000-memory.dmp
memory/2120-127-0x0000000005220000-0x0000000005320000-memory.dmp
memory/2120-123-0x0000000005080000-0x0000000005114000-memory.dmp
memory/2120-131-0x0000000004FE0000-0x0000000004FE8000-memory.dmp
memory/2120-166-0x00000000064E0000-0x000000000659A000-memory.dmp
memory/2120-165-0x0000000005CD0000-0x0000000006027000-memory.dmp
memory/2120-119-0x0000000004BF0000-0x0000000004D5A000-memory.dmp
memory/2120-169-0x0000000006FE0000-0x0000000007072000-memory.dmp
memory/2120-170-0x0000000007730000-0x0000000007CD6000-memory.dmp
memory/2120-172-0x0000000005440000-0x0000000005450000-memory.dmp
memory/2120-173-0x00000000074E0000-0x00000000074E8000-memory.dmp
memory/2120-174-0x0000000007650000-0x0000000007658000-memory.dmp
memory/2120-175-0x000000000A530000-0x000000000A568000-memory.dmp
memory/2120-176-0x0000000007720000-0x000000000772E000-memory.dmp
memory/2120-180-0x0000000005440000-0x0000000005450000-memory.dmp
memory/2120-181-0x0000000005440000-0x0000000005450000-memory.dmp
memory/2120-115-0x0000000000030000-0x0000000000098000-memory.dmp