Is 67-Client.jar safe?
Unsigned JAR with sandbox-observed process injection but zero engine detections and no external intel hits.
The file triggered sandbox heuristics for process injection (T1055) and persistence techniques, yet no antivirus engine flagged it malicious. Medium prevalence on a very new unsigned JAR leaves the intent ambiguous between research tooling and potential malware.
2b8371928a5404de79…c12488bf6b972fRecommended next actions
Before opening or running
Do not open or run it until the source and publisher can be verified independently.
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.
Intelligence
The saved assessment, checked against the scan evidence and recorded coverage.
The reasoning behind this verdict
This section explains the evidence supporting the verdict and keeps conflicting or missing signals visible.
The file triggered sandbox heuristics for process injection (T1055) and persistence techniques, yet no antivirus engine flagged it malicious. Medium prevalence on a very new unsigned JAR leaves the intent ambiguous between research tooling and potential malware.
Zero engine detections across 66 reporters including 16 tier-1 engines rules out strong malware consensus. However, the sandbox captured T1055 process injection via java.exe command lines and the high-severity heuristic fired on that behaviour. The file is unsigned, only two days old, and has no prior similar-hash verdicts or external-intel corroboration. Medium prevalence suggests wider distribution than a pure test sample, but without named-family detections or malicious children the risk remains borderline.
What We Detected
66 engines reported on the 3.5 MB JAR; none returned malicious or suspicious labels. Sandbox execution showed java.exe launching with -javaagent and writing several temp files plus registry-related activity. Three MITRE techniques flagged as offensive: T1055 (process injection), T1543.002 (new service), T1562.001 (impair defences).
Threat Behavior
The observed injection and defence-evasion techniques are consistent with both legitimate Java agents and certain RAT or hacktool payloads. No C2 domains, no malicious dropped children, and no YARA or CIRCL hits were recorded.
What To Do Now
Run the JAR only in an isolated environment. Monitor for unexpected outbound connections or new services. Re-scan after additional community feedback or when more engines have coverage.
Where this verdict could be wrong2 caveats
- Sandbox observed T1055 process injection and persistence-related techniques (T1543.002) which are common in both legitimate Java tooling and malware; single sandbox run may overstate risk without corroborating engine detections.
- Medium prevalence (33 submitters) on a 2-day-old JAR could indicate either emerging legitimate software or low-volume malware distribution; lack of RAG matches leaves both possibilities open.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- Zero malicious engine detections
- No malicious dropped children
- No contacted malicious hosts
- Sandbox observed T1055 process injection
- Unsigned JAR with 2-day age
- Persistence-related MITRE techniques (T1543.002)
Treat as suspicious pending further sandbox runs or community reports; do not execute on production systems without isolation.
Coverage & freshness
Complete means the check returned a usable result. It does not mean the file is safe.
Antivirus
Complete0 of 74 engines flagged the file.
Sandbox
Complete1 isolated runtime environment contributed observations.
Network
Not runNo contacted-host reputation check is recorded.
No timestamp recordedYARA
Complete1 signature or behavior rule matched.
External intel
Complete3 of 3 independent reference sources completed.
Behavior
Plain-English impact first, then the observed runtime evidence.
Runtime flight recorder
Capture complete- 1isolated sandbox run
- 15MITRE ATT&CK techniques
- 12spawned processes
- 0network contacts
- 16filesystem & 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.
Attack story
Runtime observations grouped by analysis stage. Arrows organize the stages; they do not claim chronology or causality.
Input file
The submitted object
- FileObserved
67-Client.jar
2b8371928a5404de7983b14becfd933fd5988d8e1b07e4ab99c12488bf6b972f
01Uploaded file
Processes
Runtime execution
- ProcessObserved
Observed process
"C:\Program Files\Java\jre-1.8\bin\javaw.exe" -jar "C:\Users\<USER>\Desktop\runtime.jar"
02Isolated runtime analysis - ProcessObserved
Observed process
C:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M
03Isolated runtime analysis - +1 more recorded observation in Analyst mode
Files
Created or changed
- Written fileObserved
2956
C:\Users\<USER>\AppData\Local\Temp\hsperfdata_<USER>\2956
04Isolated runtime analysis - Written fileObserved
3903daac9bc4a3b7.timestamp
C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
05Isolated runtime analysis - +1 more recorded observation in Analyst mode
5 recorded facts from one runtime window. Every fact remains independently traceable in Analyst mode.
What this file did when executed
This file was detonated in 1 sandbox and its runtime behaviour was observed.
Adversary techniques mapped to the MITRE ATT&CK framework.
- C:\Users\<USER>\AppData\Local\Temp\hsperfdata_<USER>\2956
- C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
- C:\ProgramData\Microsoft\Windows Security Health\Logs
- C:\ProgramData\Oracle\Java\.oracle_jre_usage\17dfc292991c8786.timestamp
- C:\Users\user\AppData\Local\Temp\hsperfdata_user
- C:\Users\user\AppData\Local\Temp\hsperfdata_user\1560
- /tmp/hsperfdata_root/3545
- \BaseNamedObjects\Local\SM0:6888:304:WilStaging_02
- \BaseNamedObjects\Local\SM0:6888:120:WilError_03
- \BaseNamedObjects\Local\ZonesCacheCounterMutex
- \BaseNamedObjects\Local\ZonesLockedCacheCounterMutex
Files this sample writes at runtime
This file drops 5 children at runtime. None are currently flagged malicious in our cache.
- 37a341a656fa359e2884…9f9c88Never scannednever seen before
- 1fb70758d211fa4f059f…bde9a9Never scannednever seen before
- cbfa63e9f038f6d4ff92…d16b75Never scannednever seen before
- 3f8096f14540c8e18e4e…ad10b8Never scannednever seen before
- d87c5f3cdfb5b7c0510e…1ade9eNever scannednever seen before
Detection & Forensics
Consensus, attribution, signatures, code structure, prevalence, and identity.
Evidence integrity
Chain of custody for the facts preserved in this report.
- 1rule hit recorded
- 0 / 74engines flagged
- 33sources in submission history
Why these facts are shown
Each statement identifies whether it was directly recorded or derived from saved scan facts.
- 01
1 high-confidence signature or behavior rule matched this file.
Verdict inputView chapterProvenanceDerivedSourceSignature and behavior rulesObserved at - 02
0 of 74 antivirus engines flagged the file.
ProvenanceObservedSourceAntivirus analysisObserved at - 03
The hash has been submitted 35 times from 33 sources.
ProvenanceDerivedSourceSaved report factsObserved at - 04
Scanned file: 67-Client.jar — 2b8371928a5404de7983b14becfd933fd5988d8e1b07e4ab99c12488bf6b972f
ProvenanceObservedSourceUploaded fileObserved at - 05
Observed process — "C:\Program Files\Java\jre-1.8\bin\javaw.exe" -jar "C:\Users\<USER>\Desktop\runtime.jar"
ProvenanceObservedSourceIsolated runtime analysisObserved at - 06
Observed process — C:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M
ProvenanceObservedSourceIsolated runtime analysisObserved at - 07
File written: 2956 — C:\Users\<USER>\AppData\Local\Temp\hsperfdata_<USER>\2956
ProvenanceObservedSourceIsolated runtime analysisObserved at - 08
File written: 3903daac9bc4a3b7.timestamp — C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
ProvenanceObservedSourceIsolated runtime analysisObserved at
Detection sources at a glance
The available sources did not agree on a named threat category.
MalwareBazaar, YARAify, and CIRCL hashlookup completed and returned no entries for this hash.
Signatures and behavior heuristics
A community signature or high-severity behavioral heuristic matched. Signatures identify known patterns; heuristics are strong leads but are not proof on their own.
MITRE T1055 (Process Injection) observed — CreateRemoteThread / APC / reflective-DLL injection. The payload is being smuggled into a legitimate process to bypass AV hooks.
Evidence"C:\Program Files\Java\jre-1.8\bin\javaw.exe" -jar "C:\Users\<USER>\Desktop\runtime.jar"
0 of 74 engines flagged this file
View all 74 engine results
PE structure
Not applicablePE structure analysis applies to Windows executable formats, not this file type.
How widely this file has been seen
Moderate prevalence — neither rare nor common. No strong prior applies.
Fingerprint and provenance
- File name
- 67-Client.jar
- Format
- JAR
- Code signing
- Not applicable to this file type
- Size
- 3.3 MB
- Last analyzed
- Jul 21, 2026, 7:28 PM UTC
2b8371928a5404de7983b14becfd933fd5988d8e1b07e4ab99c12488bf6b972fSafety & 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.
- Recovery step 01
Don't open or run it unless you're certain it came from a source you trust.
- Recovery step 02
Check where you got it — an unexpected attachment or a random download link is a red flag.
- 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.
- 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.
Is 67-Client.jar safe, or is it malware?
What is 67-Client.jar?
How many antivirus engines detected 67-Client.jar?
I already downloaded and opened or ran 67-Client.jar — what should I do?
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Community
Member reviews and reports for this exact file hash.