MalwareTips
Threat LensFile scan report

Is BK-Client2.4.jar safe?

Verdict
Suspicious

Suspicious file assessment

1 high-confidence signature or behavior rule matched this file.

Do not open or run it until verified

Do not open or run it until verified

Read the full analysis
Saved file evidenceAntivirus consensus
0of 74 flagged
Flagged 0No detection 74
Digital specimenBK-Client2.4.jar65dfc6f67a3c38ad81…efb19555b5733e
Size27.2 MB
Code signingNot applicable
SandboxRuntime complete
First seen2d ago
Evidence3 priority signals
1 high-confidence signature or behavior rule matched this file.

Recommended next actions

01

Before opening or running

Do not open or run it until the source and publisher can be verified independently.

02

If you already opened or ran it

Stop using it, scan the device, and watch for unexpected behavior or security alerts. Get a fresh copy from the publisher's official site and verify its exact hash when possible.

Chapter 02

Intelligence

The saved assessment, checked against the scan evidence and recorded coverage.

No saved analyst narrative

This report keeps the verified scan facts available below without inventing an analysis that was not saved with the scan.

Scan transparency

Coverage & freshness

3 of 5 complete

Complete means the check returned a usable result. It does not mean the file is safe.

  • Antivirus

    Complete

    0 of 74 engines flagged the file.

  • Sandbox

    Complete

    1 isolated runtime environment contributed observations.

  • Network

    Partial

    1 runtime contact was observed without a completed reputation cross-check.

  • YARA

    Complete

    2 signature or behavior rules matched.

  • External intel

    Partial

    Independent reference checks were attempted but are incomplete.

Chapter 03

Behavior

Plain-English impact first, then the observed runtime evidence.

Runtime flight recorder

Capture complete
  • 1isolated sandbox run
  • 15MITRE ATT&CK techniques
  • 15spawned processes
  • 1network contacts
  • 14filesystem & mutex artifacts

What this file does

Observed actions and their security significance

  • High concern: Injected code into another process, a technique that can conceal execution.

  • High concern: Created or modified a system service, which can keep code running.

  • High concern: Attempted to impair or bypass security controls.

  • Moderate concern: Runs hidden system commands (script or shell).

  • Moderate concern: Transferred a file over the network; malware can use this to fetch additional payloads.

  • Moderate concern: Checks which security software you have installed.

  • Note: Collects details about your system.

These are observed capabilities from an isolated analysis. A technique does not prove malicious intent on its own, and the file never ran on your device.

Recorded behavior

Attack story

Runtime observations grouped by analysis stage. Arrows organize the stages; they do not claim chronology or causality.

ObservedDerived

6 recorded facts from one runtime window. Every fact remains independently traceable in Analyst mode.

Chapter 04

Detection & Forensics

Consensus, attribution, signatures, code structure, prevalence, and identity.

Chapter 05

Safety & FAQ

Complete recovery guidance and answers for the next decision.

What to do now

We couldn't fully clear this file. Treat it with caution.

  1. Recovery step 01

    Don't open or run it unless you're certain it came from a source you trust.

  2. Recovery step 02

    Check where you got it — an unexpected attachment or a random download link is a red flag.

  3. Recovery step 03

    If its origin cannot be confirmed, delete this Java file and use a fresh copy from a trusted source. Get a fresh copy from the publisher's official site and verify its exact hash when possible.

  4. Recovery step 04

    If you're still unsure, scan it again in a day or two — detections often catch up on newer files.

Safety FAQ

Direct answers grounded in the saved verdict and evidence in this report.

7 evidence-based answers
Is BK-Client2.4.jar safe, or is it malware?
Evidence-based answer
BK-Client2.4.jar is suspicious — treat it as unsafe until you're sure. No antivirus engine flagged it; the cautious verdict comes from other saved evidence such as identity, prevalence, signing, or runtime signals. Don't open or run it unless you fully trust where it came from. Get a fresh copy from the publisher's official site and verify its exact hash when possible.
What is BK-Client2.4.jar?
Evidence-based answer
BK-Client2.4.jar is a Java application or archive, about 27.2 MB. We identify a file by its cryptographic hash rather than its name, because the same filename can be reused by completely different files — the hash below is the reliable fingerprint.
How many antivirus engines detected BK-Client2.4.jar?
Evidence-based answer
None — 0 of 74 antivirus engines flagged BK-Client2.4.jar. That's reassuring, though it is not proof that a file is safe, so we also weigh its behaviour, identity, and reputation.
I already downloaded and opened or ran BK-Client2.4.jar — what should I do?
Evidence-based answer
Act quickly. 1) Disconnect the device from the internet to stop the malware communicating or spreading. 2) Run a full scan with reputable anti-malware software (such as Malwarebytes) and quarantine everything it finds. 3) Change your important passwords from a DIFFERENT, clean device — many threats log keystrokes or steal saved credentials. 4) If you bank or shop on this device, watch closely for fraud and alert your bank. 5) For a confirmed infection, the most reliable fix is to back up your personal files and reinstall the operating system for a clean start.
How do I remove BK-Client2.4.jar?
Evidence-based answer
To remove BK-Client2.4.jar: 1) restart into Safe Mode (Safe Mode with Networking if you need to download a tool) so the malware doesn't auto-start. 2) Run a full scan with reputable anti-malware software and let it quarantine or delete the detections. 3) Delete this Java file from the device, then empty the Recycle Bin or Trash. 4) Check your browser extensions, startup items, and scheduled tasks for anything unfamiliar. 5) Reboot and scan again to confirm it's gone. If detections keep coming back, a clean operating-system reinstall is the most dependable cure.
What is the SHA-256 hash of BK-Client2.4.jar?
Evidence-based answer
The SHA-256 hash of BK-Client2.4.jar is 65dfc6f67a3c38ad81a8050ed5e0107babeb645e77e508e209efb19555b5733e, and its MD5 is c98023c17e387d6a78599cc7583161da. This hash is the file's unique fingerprint — two files with the same SHA-256 are identical. Use it to confirm you're looking at exactly this file (not just one with the same name) when comparing against antivirus databases or a download's published checksum.
How up to date is this analysis of BK-Client2.4.jar?
Evidence-based answer
This report reflects the scan run on July 9, 2026. Because a file's hash never changes, the identity of BK-Client2.4.jar is fixed — but antivirus coverage improves over time, so a file that looks clean today can pick up detections later (and vice-versa). If you need the latest picture, MalwareTips staff can re-run the analysis from scratch.
Chapter 06

Community

Member reviews and reports for this exact file hash.

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The raw file is processed temporarily and is not retained after processing. Its hash and report are public and permanent, so the next person who checks the same file gets an instant answer. Unknown files may be submitted to VirusTotal for analysis. If you ran this file on your computer and are worried, scan your system with an up-to-date antivirus and change critical passwords from a different device.