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Verdict Malicious

Analyzed , 2 months ago

Is Slaves of Nautica_K1y-cf2.exe safe? No, we rate this exact file malicious.

Newly submitted 16 MB signed installer with six major detections naming OfferCore bundler and a signer whose entire history is malicious.

Read the whole reasonShow less

Strong evidence · Two or more major antivirus engines agree.

Don't run it: it is unwanted software

Treat as malicious OfferCore bundler; remove the file and scan the system with up-to-date protection.

What to do now4 steps

This is unwanted software (adware or a bundled program), not an infection. Remove it and undo any changes it made.

If you haven't installed it

  1. Don't run this file. Delete it, then empty the Recycle Bin.

If you already ran it

  1. Uninstall it and any program you don't recognise that arrived at the same time (Settings > Apps on Windows).

  2. Remove browser extensions you didn't add, and reset your browser's home page, new-tab page and search engine if they changed.

  3. Run a scan with your antivirus to catch anything bundled with it.

If you opened or installed it

Unwanted software is not a full infection, but it should go. These free MalwareTips guides show how to remove it.

Paste this report's link in your topic so helpers can see what was found.

Why we think so

Share this file report

Slaves of Nautica_K1y-cf2.exe: Malicious — MalwareTips file scan

The link always shows the latest result for this exact file (its SHA-256 fingerprint).

Reads the latest antivirus results for this file's hash. Nothing is uploaded.

Antivirus results

21 of 71 flagged

  • Flagged 21
  • No detection 50
  • No result 4
FileSlaves of Nautica_K1y-cf2.exe16.2 MBSHA-256 9f88972dac4a…bf2234
  • Code signing Infivora
  • Test run Completed
  • First seen 2mo ago
21 of the 71 antivirus engines that checked it flag it, including Microsoft and Kaspersky.

Chapter 02

Why we think so

3 points against it and 2 in its favour, checked against the scan evidence.

MT AI Engine · Verdict analysis

The reasoning behind this verdict

Analyst conclusion

21 of the 71 antivirus engines that checked it flag the file, six of them major, all pointing to the OfferCore/Bundler family. The signer 'Infivora' has a 4/4 malicious track record, and four prior import-table fingerprint matches were also classified malicious.

Where this verdict could be wrong2 caveats
  • contactedHosts.inspected=12 with 0 maliciousHosts — no known-bad infrastructure confirmed
  • No dropped file is known to be malicious — no malicious child binaries observed

These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.

6 sources checked · 5 complete · 1 partial. See every source

Chapter 03

What it did in our test

It ran in our isolated test environment; no test environment rated what it did as risky.

Test run summary

Capture complete
  • 8sandbox rule tags
  • 7spawned processes
  • 27network contacts
  • 6filesystem & mutex artifacts

What the test run showed

What the file did on a test computer

Confirmed in the test run

  • Moderate concern: Contains packed or scrambled code that is harder to inspect (common in installers too).

  • Note: Read the user name of the test computer.

  • Note: Deleted files or logs during the test run (installers often clean up after themselves).

  • Note: Talked to servers over the internet during the test run.

  • Note: Read basic details of the test computer, such as its Windows version.

  • Note: Loaded extra code modules while running.

Sandbox labels we could not confirm (common in safe files too)

  • Not confirmed: A sandbox rule tagged this run as code injection, but no injected program was recorded.

This file was run on a test computer (a sandbox), not on yours. Labels we could not confirm are listed so you can see them, but they are not treated as evidence against the file.

Threat context

How bundlers and adware work

This is a bundler: a real-looking installer that hides extra software inside. When you run it, it installs things you never asked for, such as ad injectors, browser toolbars or fake 'PC cleaner' apps. The people behind it get paid for every app it installs.

Bottom line:It is not usually built to destroy files, but it slows the PC, floods it with ads and can be hard to remove completely.

Recorded behavior

What happened in the test

Grouped by step. The order is not a timeline.

Seen in the test runWorked out from other results

  1. Input file

    The submitted object

    1
    1. Evidence 1 of 7: FileSeen in the test run

      Slaves of Nautica_K1y-cf2.exe

      9f88972dac4a2ac777f899a4ae70fc5ac246c142f50267187932d61b43bf2234

      Uploaded file

  2. Processes

    What ran

    2
    1. Evidence 2 of 7: ProcessSeen in the test run

      executable.exe

      "C:\Users\<USER>\Desktop\executable.exe"

      Test run
    2. Evidence 3 of 7: ProcessSeen in the test run

      executable.tmp

      "C:\Users\<USER>\AppData\Local\Temp\is-S0NSRTQ6HC.tmp\executable.tmp" /SL5="$5002A,14880881,843264,C:\Users\<USER>\Desktop\executable.exe"

      Test run
    3. +1 more recorded observation

  3. Files

    Created or changed

    2
    1. Evidence 4 of 7: Written fileSeen in the test run

      executable.tmp

      C:\Users\<USER>\AppData\Local\Temp\is-S0NSRTQ6HC.tmp\executable.tmp

      Test run
    2. Evidence 5 of 7: Written fileSeen in the test run

      Slime Rancher 2_C2Tl-n7.tmp

      C:\Users\<USER>\AppData\Local\Temp\is-Q0DDES8OOW.tmp\Slime Rancher 2_C2Tl-n7.tmp

      Test run
    3. +1 more recorded observation

  4. Network

    Hosts contacted

    2
    1. Evidence 6 of 7: Contacted hostSeen in the test run

      108.156.248.214

      Contacted during the test run.

      Test run
    2. Evidence 7 of 7: Contacted hostSeen in the test run

      13.226.242.144

      Contacted during the test run.

      Test run
    3. +1 more recorded observation

7 facts from the test run. See the full activity list.

Chapter 04

Technical details

21 of the 71 antivirus engines that checked it flag it; signed by Infivora.

Sources checked

Every check behind this verdict

6 sources checked · 5 complete · 1 partial. Complete means the check returned a usable result; it does not mean the file is safe.

SourceStatusResultChecked
Antivirus enginesVirusTotal · 75 enginesCompleteRisk signal: 21 of 71 engines flagged it · 4 gave no result Details for antivirus engines
Sandbox runVirusTotal sandboxesCompleteRuntime behaviour was recorded Details for sandbox run
Contacted hostsMalwareTips URL scannerPartial12 of 27 contacted hosts were cross-checked; coverage is incomplete Details for contacted hosts
Signature rulesYARAify community rules + MalwareTips rulesComplete1 MalwareTips behaviour rule Details for signature rules
Malware sample databaseabuse.ch MalwareBazaarCompleteNot listed
Known-software referenceCIRCL hashlookupCompleteNo match

Engines that flagged it 21

  • BitDefender (major engine)Gen:Variant.Application.Bundler.OfferCore.Cerbu.1
  • DrWeb (major engine)Trojan.InstallCore.4143
  • Emsisoft (major engine)Gen:Variant.Application.Bundler.OfferCore.Cerbu.1 (B)
  • ESET-NOD32 (major engine)Win32/OfferCore.B potentially unwanted application
  • Fortinet (major engine)W32/Mecha.A!tr
  • GData (major engine)Gen:Variant.Application.Bundler.OfferCore.Cerbu.1
  • Kaspersky (major engine)not-a-virus:HEUR:Downloader.NSIS.LoudOffer.gen
  • Microsoft (major engine)PUADlManager:Win32/OfferCore
13 more in the full engine list

File fingerprint

Last analyzed
Aug 23, 2026, 10:30 PM UTC
SHA-256
9f88972dac4a2ac777f899a4ae70fc5ac246c142f50267187932d61b43bf2234
SHA-1
736ad3795ea1eb081153e34e0e1843fcca14ccc4
MD5
3bd25460a41048896d007597eb3fb1ec

About this file

Slaves of Nautica_K1y-cf2.exe is a Win32 EXE file of 16.2 MB.

Type and size
Win32 EXE · 16.2 MB
Signer
InfivoraValid code signature.
First seen
Aug 23, 2026On VirusTotal.
Submitted by
3 distinct sourcesRarely seen: few people have submitted this exact file.
Packer
None detected
Entropy
8.00 of 8

First scanned Updated

Chapter 05

Questions & answers

Short answers to the 9 questions people ask most about this file.

Is Slaves of Nautica_K1y-cf2.exe a virus?
Slaves of Nautica_K1y-cf2.exe is not a virus, but it is unwanted software (adware or a bundled program). Don't run it. Delete it, then empty the Recycle Bin. 21 of the 71 antivirus engines that checked it flag it, most as offercore. If you've already run it, see the removal steps below.
What is Slaves of Nautica_K1y-cf2.exe?
Slaves of Nautica_K1y-cf2.exe is a Windows program, about 16.2 MB. It carries no version information saying what it is or who made it. VirusTotal first saw it on Aug 23, 2026.
How many antivirus engines detected Slaves of Nautica_K1y-cf2.exe?
21 of the 71 antivirus engines that checked it flag Slaves of Nautica_K1y-cf2.exe, including Microsoft and Kaspersky. We weigh which engines flagged it and what else the scan found, not just the count. The rating comes from all the evidence together, not from this count alone.
What should I do if I already ran Slaves of Nautica_K1y-cf2.exe?
1) Uninstall it, and any program you don't recognise that arrived at the same time, from Settings > Apps (or Control Panel > Programs). 2) Remove browser extensions you didn't add and reset your browser's home page, new-tab page and search engine if they changed. 3) Run a scan with your antivirus to catch anything bundled with it. It is unwanted software rather than an infection, so you don't need to disconnect the device, change passwords or reinstall anything unless the scan finds real malware.
How do I remove Slaves of Nautica_K1y-cf2.exe?
To remove Slaves of Nautica_K1y-cf2.exe: 1) uninstall it from Settings > Apps (or Control Panel > Programs), together with anything installed alongside it. 2) Remove unfamiliar browser extensions and reset browser settings it changed. 3) Delete it, then empty the Recycle Bin. 4) Run a scan with your antivirus and remove what it finds.
What kind of program is Slaves of Nautica_K1y-cf2.exe?
Antivirus engines classify Slaves of Nautica_K1y-cf2.exe as unwanted software: adware or a bundled program that installs things you didn't ask for. Engines attribute it to the offercore family.
Is Slaves of Nautica_K1y-cf2.exe digitally signed?
Yes. Slaves of Nautica_K1y-cf2.exe has a valid digital signature from Infivora, which shows the file hasn't been changed since that publisher signed it. Malware is sometimes signed with stolen certificates, so a signature alone isn't proof of safety.
What is the SHA-256 hash of Slaves of Nautica_K1y-cf2.exe?
The SHA-256 fingerprint of Slaves of Nautica_K1y-cf2.exe is 9f88972dac4a2ac777f899a4ae70fc5ac246c142f50267187932d61b43bf2234, and its MD5 is 3bd25460a41048896d007597eb3fb1ec. Two files with the same SHA-256 are identical, so use it to check you have exactly this file, not just one with the same name.
How up to date is this analysis of Slaves of Nautica_K1y-cf2.exe?
This report reflects the scan on Aug 23, 2026. A file's fingerprint never changes, but antivirus engines keep learning, so a rating can change later. To get a newer result, scan the file again: we refresh the antivirus results when the saved ones are out of date.
Chapter 06

Community

Member reviews and reports for this exact file hash.

Related file reports

Other files people checked with the same signer. A matching signer does not make two files the same: only the SHA-256 fingerprint identifies a file.

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This report and its SHA-256 fingerprint are public, so the next person who checks the same file gets an instant answer; documents and images are listed by type instead of their file name. A file we had not seen before is uploaded to VirusTotal, whose security partners and subscribers can download it; MalwareTips deletes its own copy after the scan. If you ran this file and are worried, scan your device with up-to-date security software.