File scan report
Verdict Low Risk
Is BK-
This Java game-client archive has no antivirus detections, but it is rarely shared and its contents were never inspected, so its safety cannot be confirmed.
Read the whole reasonShow less
Why not Safe? We could not confirm who made it.
Limited evidence · Nothing points to a problem, but little confirms who made it.
Run this archive only if it came from the developer's official download page, and keep your antivirus protection enabled while using it.
Good practice2 tips
Low Risk: no threat found, but we could not fully confirm this file.
Get it from the publisher's own website or app store, not from a re-upload or a link someone sent you.
Keep your security software on, and stop if the file does anything you didn't expect.
Reads the latest antivirus results for this file's hash. Nothing is uploaded.
Antivirus results
0 of 63 flagged
- Flagged 0
- No detection 63
- No result 11
- Code signing Not applicable
- Test run Completed
- First seen 3mo ago
Chapter 02
Why we think so
4 points against it and 2 in its favour, checked against the scan evidence.
The reasoning behind this verdict
None of the 63 antivirus engines that checked it flagged this Java archive, and the sandbox summary showed no high-risk behaviour. However, client-style Java archives are a common disguise for stealers, engines often miss threats inside compressed Java code, and only six sources have submitted it since it was first seen on Jul 6, 2026.
None of the 63 antivirus engines that checked it flagged the file, including all 18 major antivirus engines that reported. The file is a Java archive named like a game client, a category frequently used to hide stealers and loaders. Engines scan compressed class files in such archives, so a clean result carries limited weight. Our static analysis never examined the contents, and no signature, known-software reference or publisher release identifies the author. The sandbox summary mapped only techniques common in legitimate software, with no injection target recorded, so evidence from the test run neither confirms nor clears the file.
What We Detected
None of the 63 antivirus engines that checked it flagged this Java archive, which was first seen on Jul 6, 2026 and has been submitted by only six sources. Java archives cannot be code-signed in a way we can check here, and no reference database or publisher release identifies its author.
Threat Behavior
The combined sandbox summary showed the archive launching under Java and writing ordinary Java runtime files. It recorded no injection into other processes, no persistence and no network activity of its own beyond background traffic. Its contents were not examined by our static analysis.
What To Do Now
Only run this client if you obtained it from the project's official source. Keep your antivirus enabled, and consider running it on an account without saved browser or game logins until its origin is confirmed.
Where this verdict could be wrong1 caveat
- No engine of 74 flagged the file and the sandbox summary recorded no high-risk techniques, so it may well be an ordinary game client mod.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- None of the 63 antivirus engines that checked it flagged the file
- The sandbox summary showed no high-risk techniques and no injection targets
- Game-client style Java archive, a common disguise for stealers
- Submitted by only six sources
- Archive contents were never inspected by our static analysis
- No signature or publisher record identifies the author
6 sources checked · 5 complete · 1 not needed or not applicable. 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- 15sandbox rule tags
- 3spawned processes
- 0network contacts
- 14filesystem & mutex artifacts
What this file did when executed
This file was run in a sandbox and its runtime behaviour was observed.
Techniques observed in the sandbox
15MITRE ATT&CK techniques the sandbox mapped. Highlighted ones are rare in normal software; the others are common in legitimate programs too.
- T1055· Process injection
- T1059· Runs commands
- T1064
- T1074
- T1082· System recon
- T1105· Network file transfer
- T1106
- T1129· Loads modules
- T1202
- T1518.001· Checks your AV
- T1543.002· Service install
- T1562.001· Disables security
- T1564· Hides artifacts
- T1564.001· Hides artifacts
- T1564.003· Hides artifacts
Observed activity
Processes started
3Programs the file ran, with their command lines.
javaw.exe"C:\Program Files\Java\jre-1.8\bin\javaw.exe" -jar "C:\Users\<USER>\Desktop\download.jar"cmd.exeC:\Windows\SysWOW64\cmd.exe C:\Windows\system32\cmd.exe /c ""C:\Program Files\Java\jre1.8.0_441\bin\java.exe" -javaagent:"C:\Users\user\AppData\Local\Temp\jartracer.jar" -jar "C:\Users\user\Desktop\download.jar"" >> C:\cmdlinestart.log 2>&1java.exe"C:\Program Files\Java\jre1.8.0_441\bin\java.exe" -javaagent:"C:\Users\user\AppData\Local\Temp\jartracer.jar" -jar "C:\Users\user\Desktop\download.jar"
Files
14Files the file created, changed or deleted.
- Written
C:\Users\<USER>\AppData\Local\Temp\hsperfdata_<USER>\5320 - Written
C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp - Written
C:\ProgramData\Oracle\Java\.oracle_jre_usage\17dfc292991c8786.timestamp - Written
C:\Users\user\AppData\Local\Temp\hsperfdata_user - Written
C:\Users\user\AppData\Local\Temp\hsperfdata_user\6820 - Written
C:\cmdlinestart.log
Show all 14 entries for files
- Written
\Device\ConDrv\\Connect - Written
/proc/3593/coredump_filter - Written
/tmp/hsperfdata_root/3593 - Written
/var/log/auth.log.1.gz - Written
/var/log/dpkg.log.1.gz - Written
/var/log/kern.log.1.gz - Written
/var/log/syslog.1.gz - Deleted
/tmp/hsperfdata_root/3593
Sandbox background — not the file
13The analysis machine's own processes and connections, recorded in every run.
- VM process
icacls.exeC:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M - VM process
conhost.exeC:\Windows\System32\conhost.exe C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 - VM process
gzip/bin/gzip - VM process
sh/bin/sh sh -c "\n\t\tinvoke-rc.d --quiet cups restart > /dev/null\n" logrotate_script "/var/log/cups/*log " - VM process
invoke-rc.d/usr/sbin/invoke-rc.d invoke-rc.d --quiet cups restart - VM process
runlevel/sbin/runlevel
Show all 13 entries for sandbox background — not the file
- VM process
systemctl/usr/bin/systemctl systemctl --quiet is-enabled cups.service - VM process
ls/usr/bin/ls ls /etc/rc[S2345].d/S[0-9][0-9]cups - VM process
systemctl/usr/bin/systemctl systemctl --quiet is-active cups.service - VM process
sh/bin/sh sh -c /usr/lib/rsyslog/rsyslog-rotate logrotate_script /var/log/syslog - VM process
rsyslog-rotate/usr/lib/rsyslog/rsyslog-rotate - VM process
systemctl/usr/bin/systemctl systemctl kill -s HUP rsyslog.service - VM host
162.159.36.2
Files this sample writes at runtime
This file drops 3 children at runtime. None are currently flagged malicious in our cache. 3 have no saved verdict and were not checked; that is missing coverage, not a finding.
- e62985d777e884110d6d…83830cNot checkedno saved verdict
- b4c7432e9c77e74232cd…86d63aNot checkedno saved verdict
- fb8ca83a9e7b787c90e3…6126b0Not checkedno saved verdict
Chapter 04
Technical details
None of the 63 antivirus engines that checked it flag it.
Sources checked
Every check behind this verdict
6 sources checked · 5 complete · 1 not needed or not applicable. Complete means the check returned a usable result; it does not mean the file is safe.
File fingerprint
- Last analyzed
- Jul 9, 2026, 11:41 AM UTC
- SHA-256
65dfc6f67a3c38ad81a8050ed5e0107babeb645e77e508e209efb19555b5733e- SHA-1
d59b85996038976f59c2cf98bc5e5d6d9b05e935- MD5
c98023c17e387d6a78599cc7583161da
About this file
BK-Client2.4.jar is a JAR file of 28.5 MB.
- Type and size
- JAR · 28.5 MB
- Signer
- Not applicable
- First seen
- Jul 6, 2026On VirusTotal.
- Submitted by
- 6 distinct sourcesRarely seen: few people have submitted this exact file.
First scanned Updated
Verdict history
- Suspicious
- Safeafter a re-check of the saved evidence
- Low Riskafter a re-check of the saved evidence
Ratings change when antivirus engines, our checks or MalwareTips staff learn more about a file.
Antivirus consensus
0 of 63 engines flagged this file
11 of the 74 engines returned no result for this file (file type not supported, or the scan did not finish), so they did not check it.
- Tier-118 engines0flagged
- Tier-233 engines0flagged
- Low-trust12 engines0flagged
View all 74 engine results
- AcronisClean
- AhnLab-V3Clean
- AlibabaClean
- alibabacloudClean
- ALYacClean
- Antiy-AVLClean
- APEXNo result
- ArcabitClean
- AvastClean
- Avast-MobileClean
- AVGClean
- AviraClean
- BitDefenderClean
- BitDefenderFalxNo result
- BkavNo result
- CAT-QuickHealClean
- ClamAVNo result
- CMCClean
- CrowdStrikeClean
- CTXClean
- CylanceNo result
- CynetClean
- DrWebClean
- ElasticClean
- EmsisoftClean
- ESET-NOD32Clean
- F-SecureClean
- FortinetClean
- GDataClean
- GoogleClean
- GridinsoftClean
- huorongClean
- IkarusClean
- JiangminClean
- K7AntiVirusClean
- K7GWClean
- KasperskyClean
- KingsoftClean
- LionicClean
- MalwarebytesClean
- MaxSecureClean
- McAfeeDClean
- MicrosoftClean
- MicroWorld-eScanClean
- NANO-AntivirusClean
- PaloaltoNo result
- PandaClean
- RisingClean
- SangforClean
- SentinelOneClean
- SkyhighClean
- SophosClean
- SUPERAntiSpywareClean
- SymantecClean
- SymantecMobileInsightNo result
- TACHYONClean
- tehtrisNo result
- TencentClean
- TrapmineNo result
- TrellixENSClean
- TrendMicroClean
- TrendMicro-HouseCallClean
- TrustlookNo result
- VaristClean
- VBA32Clean
- VIPREClean
- VirITClean
- ViRobotClean
- WebrootClean
- XcitiumClean
- YandexClean
- ZillyaNo result
- ZoneAlarmClean
- ZonerClean
Signatures and behavior heuristics
Low-severity pattern matches — worth noting but not on their own cause for alarm.
VirusTotal's sandbox summary maps this run to MITRE T1055 (Process Injection), but no injected process of the sample's own was recorded (the analysis VM's own WMI adapter, crash handlers and Chrome updater are not counted). VirusTotal maps T1055 on about half of all files no engine flags, so the mapping alone is not evidence of injection.
EvidenceT1055 (sandbox MITRE mapping)
How widely this file has been seen
Moderate prevalence — neither rare nor common. No strong prior applies.
Chapter 05
Questions & answers
Short answers to the 5 questions people ask most about this file.
Is BK-Client2.4.jar safe?
What is BK-Client2.4.jar?
How many antivirus engines detected BK-Client2.4.jar?
What is the SHA-256 hash of BK-Client2.4.jar?
How up to date is this analysis of BK-Client2.4.jar?
Community
Member reviews and reports for this exact file hash.