Is 67Client-1.21.11.jar safe?
Twenty-four of 74 engines flagged this JAR, including eight tier-1 products, with repeated Java trojan and dropper labels plus an offensive persistence-related technique.
The JAR drew detections from 24 of 74 engines, including eight tier-1 products such as ESET-NOD32, Fortinet, BitDefender, and Kaspersky. Although the engines lack strong consensus on one exact family, their repeated Java trojan and dropper labels, combined with observed T1543.002 activity, indicate a high-risk Java Agent-style payload.
1b6c1a783f2aada8ce…fc89decca1e5afRecommended next actions
Before opening or running
Do not open or run it. Delete this Java file from the device, then empty the Recycle Bin or Trash.
If you already opened or ran it
Disconnect from the internet, start a full or offline antivirus scan, then secure important accounts from a clean device.
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 JAR drew detections from 24 of 74 engines, including eight tier-1 products such as ESET-NOD32, Fortinet, BitDefender, and Kaspersky. Although the engines lack strong consensus on one exact family, their repeated Java trojan and dropper labels, combined with observed T1543.002 activity, indicate a high-risk Java Agent-style payload.
The strongest evidence is the breadth and quality of antivirus detections: 24 of 74 engines flagged the sample, including eight tier-1 products. ESET-NOD32, Fortinet, and Ikarus independently used Java Agent or dropper labels, while BitDefender and Emsisoft matched GenericGBA. One sandbox run also associated the sample with T1543.002, an offensive persistence-related technique, although it did not issue a malware verdict. The exact family attribution remains uncertain because engines.tier1FamilyConsensus.strong is false and several labels are generic. No complete contacted-host reputation result is available, and the dropped child remains unclassified, so neither area provides reassurance.
What We Detected
Twenty-four of 74 antivirus engines flagged the JAR, including eight tier-1 products. ESET-NOD32 identified Java/TrojanDropper.Agent.IQ, Fortinet reported Java/Agent.IQ!tr, Ikarus reported Trojan-Dropper.Java.Agent, and BitDefender and Emsisoft both matched GenericGBA. The labels vary, but they repeatedly characterize the file as a Java trojan or dropper rather than an unwanted application.
Threat Behavior
One completed sandbox run executed the sample through Java and associated it with T1543.002, an offensive persistence-related technique. The sandbox did not issue a malware verdict and recorded no network contacts, but contacted-host reputation was not checked or saved. One child file was inspected without a final classification, so it cannot be treated as harmless.
What To Do Now
Do not run the JAR on a production or personal system. Keep endpoint protection enabled, quarantine or remove the file, and investigate any host where it already executed, including Java process activity, persistence changes, and the unclassified dropped child.
Where this verdict could be wrong4 caveats
- engines.tier1FamilyConsensus.strong=false; the tier-1 engines broadly agree on Java trojan behavior but not one canonical family.
- behaviour.hasMaliciousSandboxVerdict=false, and the completed sandbox recorded no contacted domains, IPs, or URLs.
- externalIntel.yaraify.ruleCount=0, externalIntel.circl.hit=false, and externalIntel.malwareBazaar.hit=false.
- Five tier-1 engines reported the file clean, showing some disagreement among higher-trust products.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- behaviour.hasMaliciousSandboxVerdict=false in the single completed sandbox.
- No domains, IP addresses, or URLs were observed during that sandbox run.
- externalIntel.yaraify.ruleCount=0 and externalIntel.circl.hit=false.
- droppedChildren.hasMaliciousChild=false, although the child remains unclassified.
- brandMismatch.detected is not present.
- 24 of 74 antivirus engines reported malicious results.
- Eight tier-1 engines flagged the sample.
- Multiple independent products used Java trojan, Agent, or dropper labels.
- Sandbox evidence includes offensive technique T1543.002.
- The file was first submitted only nine days before analysis.
- The dropped child remains unclassified.
Quarantine the JAR and do not execute it. If it has already run, keep protection enabled and perform a full endpoint scan plus a review of Java-launched processes, persistence mechanisms, and the dropped child hash.
Coverage & freshness
Complete means the check returned a usable result. It does not mean the file is safe.
Antivirus
Complete24 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
CompleteRule evaluation completed with no recorded matches.
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
- 5MITRE ATT&CK techniques
- 6spawned processes
- 0network contacts
- 5filesystem & mutex artifacts
What this file does
Observed actions and their security significance
High concern: Created or modified a system service, which can keep code running.
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.
Threat context
How trojans work
A trojan disguises itself as something useful or harmless to trick you into running it. Once open, it does its real job in the background — anything from stealing data to opening a back door or downloading more malware.
Bottom line:The disguise is the whole trick, so a trustworthy-looking name or icon means nothing.
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
67Client-1.21.11.jar
1b6c1a783f2aada8ce97dfafb675bc2376bf1700a066681668fc89decca1e5af
01Uploaded file
Processes
Runtime execution
- ProcessObserved
Observed process
/bin/sh sh -c /usr/lib/rsyslog/rsyslog-rotate logrotate_script /var/log/syslog
02Isolated runtime analysis - ProcessObserved
Observed process
/usr/lib/rsyslog/rsyslog-rotate
03Isolated runtime analysis - +1 more recorded observation in Analyst mode
Files
Created or changed
- Written fileObserved
3d84e065e541d3cf.timestamp
C:\ProgramData\Oracle\Java\.oracle_jre_usage\3d84e065e541d3cf.timestamp
04Isolated runtime analysis - Written fileObserved
276
C:\Users\ADMINI~1\AppData\Local\Temp\hsperfdata_Administrator\276
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:\ProgramData\Oracle\Java\.oracle_jre_usage\3d84e065e541d3cf.timestamp
- C:\Users\ADMINI~1\AppData\Local\Temp\hsperfdata_Administrator\276
- /proc/3517/coredump_filter
- /tmp/hsperfdata_root/3517
- /tmp/hsperfdata_root/3517
Files this sample writes at runtime
This file drops 1 child at runtime. None are currently flagged malicious in our cache.
- 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.
- 0rule hits recorded
- 24 / 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
24 of 74 antivirus engines flagged the file, including Alibaba and alibabacloud.
Verdict inputView chapterProvenanceObservedSourceAntivirus analysisObserved at - 02
The hash has been submitted 37 times from 33 sources.
ProvenanceDerivedSourceSaved report factsObserved at - 03
Scanned file: 67Client-1.21.11.jar — 1b6c1a783f2aada8ce97dfafb675bc2376bf1700a066681668fc89decca1e5af
ProvenanceObservedSourceUploaded fileObserved at - 04
Observed process — /bin/sh sh -c /usr/lib/rsyslog/rsyslog-rotate logrotate_script /var/log/syslog
ProvenanceObservedSourceIsolated runtime analysisObserved at - 05
Observed process — /usr/lib/rsyslog/rsyslog-rotate
ProvenanceObservedSourceIsolated runtime analysisObserved at - 06
File written: 3d84e065e541d3cf.timestamp — C:\ProgramData\Oracle\Java\.oracle_jre_usage\3d84e065e541d3cf.timestamp
ProvenanceObservedSourceIsolated runtime analysisObserved at - 07
File written: 276 — C:\Users\ADMINI~1\AppData\Local\Temp\hsperfdata_Administrator\276
ProvenanceObservedSourceIsolated runtime analysisObserved at
Detection sources at a glance
Category: generic-trojan
MalwareBazaar, YARAify, and CIRCL hashlookup completed and returned no entries for this hash.
YARA rules
No matchesThe rule pass completed without a saved public match.
24 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
- 67Client-1.21.11.jar
- Format
- JAR
- Code signing
- Not applicable to this file type
- Size
- 3.9 MB
- Last analyzed
- Sep 15, 2026, 5:24 PM UTC
1b6c1a783f2aada8ce97dfafb675bc2376bf1700a066681668fc89decca1e5afSafety & FAQ
Complete recovery guidance and answers for the next decision.
What to do now
This file is dangerous. Treat it as harmful and remove it.
- Recovery step 01
Don't open or run this Java file. Delete this Java file from the device, then empty the Recycle Bin or Trash.
- Recovery step 02
If you already opened or ran it, disconnect from the internet and start with a full antivirus scan or Microsoft Defender Offline scan. If compromise is suspected or the problem persists, use a reputable second-opinion scanner and follow incident-recovery or clean-reinstall guidance.
- Recovery step 03
If you typed any passwords while it was open, change them from a device you trust.
- Recovery step 04
Get a fresh copy from the publisher's official site and verify its exact hash when possible.
Safety FAQ
Direct answers grounded in the saved verdict and evidence in this report.
Is 67Client-1.21.11.jar malware?
What is 67Client-1.21.11.jar?
How many antivirus engines detected 67Client-1.21.11.jar?
I already downloaded and opened or ran 67Client-1.21.11.jar — what should I do?
How do I remove 67Client-1.21.11.jar?
What kind of malware is 67Client-1.21.11.jar?
What is the SHA-256 hash of 67Client-1.21.11.jar?
How up to date is this analysis of 67Client-1.21.11.jar?
Community
Member reviews and reports for this exact file hash.