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WebAssembly module
API
This view is built from:
Module analysis/api/v1/wasm/253c57775ef06eb1ca57fdfbe66a0715415cddafe87d54cf3ea49393a2b0363dDecompiled code/api/v1/wasm/253c57775ef06eb1ca57fdfbe66a0715415cddafe87d54cf3ea49393a2b0363d/code

253c57775ef06eb1ca57fdfbe66a0715415cddafe87d54cf3ea49393a2b0363d

Known library: .NET runtimeHashing or cipher loops
Download .wasmSearch scans with this module

The file is the module exactly as the page had it. WebAssembly does nothing on its own: it runs only when a script instantiates it. Labels describe what the module contains and are leads, not verdicts.

At a glance

What it is
Known library: .NET runtime.
Names it came with
File name: dotnet-native (2 sites). Its build and the addresses it came from say so; whoever builds a module chooses these, so they are hints.
How it was built
Compiled with Emscripten, usually from C or C++.
What it can do
None of its imports reaches the network, runs code or changes the page. Judged from the names of its imports.
Where we saw it
On 3 public scans, 2026-10-08 to 2026-10-22.
Findings
Hashing or cipher loops. Leads, not verdicts: legitimate modules show these too.
Size
2.9 MiB
First seen
2026-10-08
Last seen
2026-10-22
Public scans
3
Functions
8616
Imports
85
Exports
197
Data segments
3294

Analysis limits

Only its first 2,000 strings were read.

How it was built

Compiled with Emscripten, usually from C or C++.

Language
C or C++, probablyNot named. Emscripten and clang mostly compile C and C++.
Compiler
EmscriptenThe toolchain that compiles C and C++ (sometimes Rust) for the web. It comes with the JavaScript that loads the module.
System interface
WASIStandard calls for clocks, random numbers and files. In a browser the page's own JavaScript provides them.
Compiler backend
LLVMThe code generator behind rustc, clang, Emscripten and TinyGo.

Read from text inside the module (its build metadata and paths the compiler left) and from its import and export names. Whoever builds a module can change or remove these, so treat them as hints. They say how a module was made, not what it does.

Hashing and cipher code

Algorithms recognised from their published constants, tables and rotation amounts: CRC-32, SHA-1. Legitimate modules use them all the time, for hashing, captchas and encryption, so this is a lead, not a verdict.

  • function 1077SHA-1 ·
  • function 1078SHA-1 · constants in its code

Decompiled code

8,613 of 8,616 functions decompiled to C-like pseudocode; 85 more are imported from the page.

  • 3 of 8,616 functions could not be decompiled.

Beyond WebAssembly 1.0: Vector (SIMD) instructions (241 functions).

Decompiled code is a reconstruction from the file, so names and types are often guesses. Query values in URLs are masked here; the downloaded file is unchanged.

FunctionSizeBlocksComplexityNotes
No functions match.

File layout

WebAssembly binary format version 1, core module, 11 sections.

SectionOffsetSizeItems
type0x81.2 KiB154
import0x4e32.4 KiB85
function0xe748.4 KiB8,616
table0x303b7 bytes1
memory0x30429 bytes1
global0x304b26 bytes4
export0x30654.7 KiB197
element0x435a8.6 KiB1
datacount0x65cc4 bytes
code0x65d02.1 MiB8,616
data0x21c6ec769.3 KiB3,294
Memory
512 pages (32.0 MiB), up to 32,768 pages (2.0 GiB)
Table
4,429 entries, no upper limit, funcref
Globals
4
Element segments
1
Declared data segments
3,294
Function names
none (names were stripped)

Data segments

Each bar is one segment of the module's data: as wide as its size, as tall as its entropy. Bars above the dashed line are encrypted or compressed. 3,294 segments, 746.3 KiB in all. The chart shows 64: the first 64 and every encrypted or compressed one.

3,230 segments not drawn (594.4 KiB)02468Segment 0: 146,289 bytes, 5.35 bits per byteSegment 1: 1,380 bytes, 7.03 bits per byteSegment 2: 691 bytes, 1.94 bits per byteSegment 3: 37 bytes, 0.75 bits per byteSegment 4: 105 bytes, 1.08 bits per byteSegment 5: 41 bytes, 0.84 bits per byteSegment 6: 33 bytes, 0.85 bits per byteSegment 7: 161 bytes, 1.16 bits per byteSegment 9: 537 bytes, 1.01 bits per byteSegment 11: 81 bytes, 0.88 bits per byteSegment 12: 41 bytes, 1.24 bits per byteSegment 13: 773 bytes, 1.13 bits per byteSegment 14: 177 bytes, 0.98 bits per byteSegment 15: 53 bytes, 1.13 bits per byteSegment 16: 221 bytes, 1.05 bits per byteSegment 18: 133 bytes, 1.07 bits per byteSegment 19: 21 bytes, 0.86 bits per byteSegment 20: 5 bytes, 0.97 bits per byteSegment 21: 93 bytes, 0.82 bits per byteSegment 22: 41 bytes, 0.84 bits per byteSegment 23: 41 bytes, 0.84 bits per byteSegment 24: 105 bytes, 0.82 bits per byteSegment 25: 9 bytes, 0.92 bits per byteSegment 26: 25 bytes, 0.86 bits per byteSegment 27: 65 bytes, 0.83 bits per byteSegment 29: 65 bytes, 0.81 bits per byteSegment 30: 669 bytes, 0.81 bits per byteSegment 31: 157 bytes, 0.82 bits per byteSegment 32: 17 bytes, 0.87 bits per byteSegment 33: 49 bytes, 0.83 bits per byteSegment 34: 221 bytes, 0.82 bits per byteSegment 35: 101 bytes, 0.82 bits per byteSegment 36: 21 bytes, 0.86 bits per byteSegment 37: 9 bytes, 0.92 bits per byteSegment 38: 21 bytes, 0.79 bits per byteSegment 41: 233 bytes, 1.17 bits per byteSegment 42: 17 bytes, 1.56 bits per byteSegment 43: 45 bytes, 1.1 bits per byteSegment 44: 49 bytes, 1.25 bits per byteSegment 45: 681 bytes, 1.39 bits per byteSegment 46: 5 bytes, 1.37 bits per byteSegment 47: 13 bytes, 1.2 bits per byteSegment 48: 5 bytes, 0.97 bits per byteSegment 49: 5 bytes, 0.97 bits per byteSegment 50: 85 bytes, 1.15 bits per byteSegment 52: 41 bytes, 1.13 bits per byteSegment 53: 5 bytes, 1.37 bits per byteSegment 54: 41 bytes, 0.98 bits per byteSegment 55: 13 bytes, 1.14 bits per byteSegment 57: 17 bytes, 1.09 bits per byteSegment 58: 9 bytes, 1.22 bits per byteSegment 59: 1,585 bytes, 5.08 bits per byteSegment 61: 69 bytes, 1.31 bits per byteSegment 62: 17 bytes, 0.95 bits per byteSegment 63: 135 bytes, 4.28 bits per byte
data segment encrypted or compressed 3,230 segments not drawn 7.5 bits per byteHeight: bits per byte. Width: share of all the data.

Imports (85)

  • env.mono_wasm_bind_js_import_ST
  • env.mono_wasm_invoke_jsimport_ST
  • env.mono_wasm_release_cs_owned_object
  • env.mono_wasm_resolve_or_reject_promise
  • env.mono_wasm_invoke_js_function
  • env.mono_wasm_cancel_promise
  • env.mono_wasm_console_clear
  • env.mono_wasm_get_locale_info
  • env.mono_wasm_set_entrypoint_breakpoint
  • env.mono_wasm_trace_logger
  • env.abort
  • env.exit
  • env.emscripten_force_exit
  • env.mono_interp_tier_prepare_jiterpreter
  • env.mono_interp_jit_wasm_entry_trampoline
  • env.mono_interp_invoke_wasm_jit_call_trampoline
  • env.mono_interp_jit_wasm_jit_call_trampoline
  • env.mono_interp_flush_jitcall_queue
  • env.mono_interp_record_interp_entry
  • env.mono_wasm_free_method_data
  • env.strftime
  • env.mono_wasm_process_current_pid
  • env.schedule_background_exec
  • env.mono_wasm_debugger_log
  • env.mono_wasm_asm_loaded
  • env.mono_wasm_add_dbg_command_received
  • env.mono_wasm_fire_debugger_agent_message_with_data
  • env.mono_wasm_schedule_timer
  • env.__cxa_throw
  • env.invoke_vi
  • env.__cxa_find_matching_catch_3
  • env.llvm_eh_typeid_for
  • env.__cxa_begin_catch
  • env.__cxa_end_catch
  • env.__resumeException
  • env.mono_wasm_browser_entropy
  • wasi_snapshot_preview1.environ_sizes_get
  • wasi_snapshot_preview1.environ_get
  • env.__syscall_faccessat
  • env.__syscall_chdir
  • env.__syscall_chmod
  • wasi_snapshot_preview1.fd_close
  • env.emscripten_date_now
  • env._emscripten_get_now_is_monotonic
  • env.emscripten_get_now
  • env.emscripten_get_now_res
  • env.__syscall_fchmod
  • env.__syscall_fcntl64
  • env.__syscall_openat
  • env.__syscall_ioctl

Exports (197)

Scripts that carry or load it

  • app.datatalks.se loads it.
  • app.datatalks.se loads it.
  • www.svedea.se loads it.

From public scans. A script loads a module when it fetches or compiles it.

Text it passes to the page

Fixed text the module hands to the page's JavaScript when it calls an import, read from the module file. Imports that reach the network, run code or change the page come first; web addresses are shown as their host.

ImportText
env.__syscall_getdents64debugging memory
env.mono_wasm_trace_loggerjsinterop
env.mono_wasm_trace_loggercritical
env.mono_wasm_trace_loggermono_wasm_bind_assembly_exports unexpected double fault
env.mono_wasm_trace_loggermono_wasm_invoke_jsexport unexpected double fault

In our sandbox

  • Produced 20 strings at run time, listed below.
  • Ran a long busy loop (often hashing).

Strings it produced at run time

Text that appeared while it ran and is not in the file: decoded, decrypted or built by its code. Web addresses are shown as their host. Showing 17 of 20.

  1. N3icu7UObjectE
  2. j#j#j#j#j#j#j#j#j#j#j#j#j#j#j#j#j#j#j#j#j#j#j#j#j#j#j#
  3. YPYPYPYPYPYPYPYPYPYPYPYPYPYPYPYPYPYPYPYPYPYPYPYPYPYPYPYPYPYPYPYPYPYP
  4. N3icu15ChineseCalendarE
  5. 0123456789abcdefghijklmnopqrstuvwxyz
  6. LC_CTYPE
  7. /__w/1/s/src/runtime/src/mono/mono/eglib/gstr.c:340 <disabled>
  8. /__w/1/s/src/runtime/src/mono/mono/eglib/gstr.c:
  9. <disabled>' not met
  10. 1/s/src/runtime/src/mono/mon
  11. /__w/1/s/src/runtime/src/mono/mono/eglib/gstr.c:340 <disabled>/__w/1/s/src/runtime/src/mono/mono/sgen/sgen-internal.c:12
  12. /__w/1/s/src/runtime/src/mono/mono/sgen/sgen-int
  13. (null)/(null)
  14. /__w/1/s/src
  15. /mono/mono/sgen/sgen-int
  16. '0chRC2=s]:(
  17. Aml9M]wU

Checks we ran

  • Threat-feed matches: none
  • Names of mining software or pools: none
  • CryptoNight mining structure: not found
  • Hashing or cipher loops: 1 function (common in codecs and captchas)
  • Known hashing or cipher algorithms: CRC-32, SHA-1
  • Encrypted or compressed data: none
  • JavaScript stored inside: none
  • Other modules inside: none
  • Imports that read browser or page details: none
  • Function names: removed (usual in release builds)

Static checks of the file: nothing in it was run for these. A finding is a lead, not a verdict.

Shares code with

Other modules that contain some of the same functions. They are ranked by functions few modules have, so a language's own runtime does not link every module built with it. Shared code often means a shared library or the same developer. It is a lead, not a verdict.

  • 7fa6fc38…4bee822.8 MiB · first seen 2026-10-05 · 2,036 functions in common (50% of this module's, 51% of that one's)
  • b3a1014c…ae72e42.8 MiB · first seen 2026-10-16 · 2,036 functions in common (50% of this module's, 51% of that one's)
  • 9bf44add…0548cf2.8 MiB · first seen 2026-10-09 · 1,336 functions in common (33% of this module's, 28% of that one's)
  • c5e7fd13…5141841.4 MiB · first seen 2026-10-17 · 622 functions in common (15% of this module's, 28% of that one's)

Seen on 3 public scans

PageTitleSeenHow it got there
app.datatalks.seData Talks CDP2026-10-22Built by a script at run time; Downloaded as a file
www.svedea.seSveriges landskapshundar | Svedea2026-10-09Built by a script at run time; Downloaded as a file
app.datatalks.seData Talks CDP2026-10-08Built by a script at run time; Downloaded as a file