Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
05/08/2026, 07:37
General
- Target VisualStudioSetup.exe
- Size 5.4MB
- Sample260805-jgbw5asamb
- SHA256 777da97e680548f568cd1f453f56aa64a7a8e69315953cec322683c9657b3a70
Malware Config
Signatures
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\fdc319956c75179f04af36f7e386\vs_bootstrapper_d15\vs_setup_bootstrapper.exe"C:\Users\Admin\AppData\Local\Temp\fdc319956c75179f04af36f7e386\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_202608050838064821.json
20260805073838_2cc39348c8d2463e981c1a2221767a69.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/2020-212-0x0000000005A10000-0x0000000005A24000-memory.dmp
memory/2020-242-0x00000000058C0000-0x00000000058D0000-memory.dmp
memory/2020-224-0x0000000005DF0000-0x0000000005E00000-memory.dmp
memory/2020-220-0x0000000005A30000-0x0000000005A38000-memory.dmp
memory/2020-208-0x0000000005AD0000-0x0000000005B84000-memory.dmp
memory/2020-195-0x0000000005600000-0x000000000570A000-memory.dmp
memory/2020-191-0x0000000005450000-0x00000000054F0000-memory.dmp
memory/2020-204-0x00000000058C0000-0x00000000058D0000-memory.dmp
memory/2020-199-0x00000000053F0000-0x00000000053FA000-memory.dmp
memory/2020-232-0x0000000006100000-0x0000000006122000-memory.dmp
memory/2020-203-0x0000000005550000-0x00000000055A4000-memory.dmp
memory/2020-233-0x0000000006130000-0x0000000006484000-memory.dmp
memory/2020-234-0x0000000006E90000-0x0000000006EF6000-memory.dmp
memory/2020-235-0x0000000007480000-0x0000000007512000-memory.dmp
memory/2020-236-0x0000000007AD0000-0x0000000008074000-memory.dmp
memory/2020-239-0x0000000008140000-0x00000000081FA000-memory.dmp
memory/2020-187-0x0000000004FE0000-0x0000000005162000-memory.dmp
memory/2020-216-0x0000000005A60000-0x0000000005A88000-memory.dmp
memory/2020-244-0x00000000080E0000-0x00000000080E8000-memory.dmp
memory/2020-243-0x00000000058C0000-0x00000000058D0000-memory.dmp
memory/2020-246-0x00000000058C0000-0x00000000058D0000-memory.dmp
memory/2020-245-0x00000000058C0000-0x00000000058D0000-memory.dmp
memory/2020-247-0x0000000008100000-0x0000000008108000-memory.dmp
memory/2020-248-0x00000000058C0000-0x00000000058D0000-memory.dmp
memory/2020-249-0x000000000A9F0000-0x000000000AAF0000-memory.dmp
memory/2020-251-0x000000000A2E0000-0x000000000A2EE000-memory.dmp
memory/2020-250-0x000000000B730000-0x000000000B768000-memory.dmp
memory/2020-255-0x00000000058C0000-0x00000000058D0000-memory.dmp
memory/2020-256-0x00000000058C0000-0x00000000058D0000-memory.dmp
memory/2020-257-0x00000000058C0000-0x00000000058D0000-memory.dmp
memory/2020-258-0x00000000058C0000-0x00000000058D0000-memory.dmp
memory/2020-259-0x00000000058C0000-0x00000000058D0000-memory.dmp
memory/2020-260-0x00000000058C0000-0x00000000058D0000-memory.dmp
memory/2020-261-0x00000000058C0000-0x00000000058D0000-memory.dmp
memory/2020-262-0x000000000A9F0000-0x000000000AAF0000-memory.dmp
memory/2020-183-0x0000000000530000-0x0000000000584000-memory.dmp