Is jarfix.exe safe?
Safe file assessment
0 of 74 antivirus engines flagged the file.
3a00c5b808954e9dca…ebae787f5eaae2Recommended next actions
Before running
Run it only when it came from the developer's official site or another source you independently trust.
If you already ran it
Keep normal device protection enabled and stop if the file behaves unexpectedly.
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.
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
Partial20 runtime contacts were observed without a completed reputation cross-check.
YARA
Complete2 signature or behavior rules 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
- 28MITRE ATT&CK techniques
- 15spawned processes
- 20network contacts
- 40filesystem & mutex artifacts
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
jarfix.exe
3a00c5b808954e9dca76418506eacec9cb1cb0fd844318a896ebae787f5eaae2
01Uploaded file
Processes
Runtime execution
- ProcessObserved
Observed process
"C:\Users\<USER>\Desktop\file.exe"
02Isolated runtime analysis - ProcessObserved
Observed process
%SAMPLEPATH%\3a00c5b808954e9dca76418506eacec9cb1cb0fd844318a896ebae787f5eaae2.exe
03Isolated runtime analysis - +1 more recorded observation in Analyst mode
Files
Created or changed
- Written fileObserved
System.dll
C:\Users\<USER>\AppData\Local\Temp\nsxC4B8.tmp\System.dll
04Isolated runtime analysis - Written fileObserved
UserInfo.dll
C:\Users\<USER>\AppData\Local\Temp\nsxC4B8.tmp\UserInfo.dll
05Isolated runtime analysis - +1 more recorded observation in Analyst mode
Network
Hosts contacted
- Contacted hostObserved
23.216.147.64
Contact observed during runtime.
06Isolated runtime analysis - Contacted hostObserved
a83f:8110:0:0:100:0:1800:0
Contact observed during runtime.
07Isolated runtime analysis - +1 more recorded observation in Analyst mode
7 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.
- 23.216.147.64
- a83f:8110:0:0:100:0:1800:0
- 192.168.0.9
- a83f:8110:0:0:1400:1400:2800:3800
- a83f:8110:517c:adff:527d:aeff:507e:aeff
- a83f:8110:584a:b5b1:17cb:1ec8:0:0
- a83f:8110:0:6:4b95:400:4e00:6100
- 192.168.0.69
- 192.168.0.99
- a83f:8110:0:0:10:0:0:0
- C:\Users\<USER>\AppData\Local\Temp\nsxC4B8.tmp\System.dll
- C:\Users\<USER>\AppData\Local\Temp\nsxC4B8.tmp\UserInfo.dll
- C:\Documents and Settings\Administrator\Local Settings\Temp\nss3.tmp\System.dll
- C:\WINDOWS\wininit.ini
- C:\DOCUME~1\<USER>~1\LOCALS~1\Temp\nsv4.tmp\System.dll
- C:\Users\<USER>\AppData\Local\Temp\nsxC4B8.tmp\System.dll
- C:\Users\<USER>\AppData\Local\Temp\nsxC4B8.tmp\UserInfo.dll
- C:\Users\<USER>\AppData\Local\Temp\nsxC4B8.tmp\
- C:\ProgramData\Microsoft\Windows\WER\Temp\WERFF9D.tmp.WERInternalMetadata.xml
- C:\ProgramData\Microsoft\Windows\WER\Temp\WER412.tmp.csv
- jarfix
- oleacc-msaa-loaded
- CTF.LBES.MutexDefaultS-1-5-21-1482476501-1645522239-1417001333-500
- CTF.Compart.MutexDefaultS-1-5-21-1482476501-1645522239-1417001333-500
- CTF.Asm.MutexDefaultS-1-5-21-1482476501-1645522239-1417001333-500
Files this sample writes at runtime
This file drops 10 children at runtime. None are currently flagged malicious in our cache.
- 6707e9e88dec460c2cf4…e711a3Never scannednever seen before
- bb6df93369b498eaa638…f5e0f1Never scannednever seen before
- bb5a1d709ddba97bb438…d77afaNever scannednever seen before
- b322c48534c6fd3cc832…168519Never scannednever seen before
- cf7023ac8b813f1d62e3…db0aa1Never scannednever seen before
- f29e86626b1ae9f7b70e…f864feNever scannednever seen before
- c0d6974c960e74660b28…55c3deNever scannednever seen before
- ec5526b24e9bd32e2d03…9e6167Never scannednever seen before
- 5a08cd9ba3d16f45368f…77526aNever scannednever seen before
- accf036232d2570796bf…f36af8Never 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.
- 2rule hits recorded
- 0 / 74engines flagged
- 3,695sources in submission history
Why these facts are shown
Each statement identifies whether it was directly recorded or derived from saved scan facts.
- 01
0 of 74 antivirus engines flagged the file.
Verdict inputView chapterProvenanceObservedSourceAntivirus analysisObserved at - 02
The hash has a long, established submission history across 3,695 sources.
Verdict inputView chapterProvenanceDerivedSourceSubmission historyObserved at - 03
1 high-confidence signature or behavior rule matched this file.
Verdict inputView chapterProvenanceDerivedSourceSignature and behavior rulesObserved at - 04
Scanned file: jarfix.exe — 3a00c5b808954e9dca76418506eacec9cb1cb0fd844318a896ebae787f5eaae2
ProvenanceObservedSourceUploaded fileObserved at - 05
Observed process — "C:\Users\<USER>\Desktop\file.exe"
ProvenanceObservedSourceIsolated runtime analysisObserved at - 06
Observed process — %SAMPLEPATH%\3a00c5b808954e9dca76418506eacec9cb1cb0fd844318a896ebae787f5eaae2.exe
ProvenanceObservedSourceIsolated runtime analysisObserved at - 07
File written: System.dll — C:\Users\<USER>\AppData\Local\Temp\nsxC4B8.tmp\System.dll
ProvenanceObservedSourceIsolated runtime analysisObserved at - 08
File written: UserInfo.dll — C:\Users\<USER>\AppData\Local\Temp\nsxC4B8.tmp\UserInfo.dll
ProvenanceObservedSourceIsolated runtime analysisObserved at - 09
Contacted host: 23.216.147.64 — Contact observed during runtime.
ProvenanceObservedSourceIsolated runtime analysisObserved at - 10
Contacted host: a83f:8110:0:0:100:0:1800:0 — Contact observed during runtime.
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:\Users\<USER>\Desktop\file.exe"The sample contacted an external IP address directly and no application domain was recorded. Direct-IP traffic also occurs in legitimate installers and infrastructure, so this is supporting context only and requires corroboration from host reputation and other runtime evidence.
Evidence23.216.147.64 · a83f:8110:0:0:100:0:1800:0 · a83f:8110:0:0:1400:1400:2800:3800
0 of 74 engines flagged this file
View all 74 engine results
Section entropy & packers
No high-entropy executable section or known packer signature was detected. Data and resource sections can still have high entropy without indicating packed code.
How widely this file has been seen
Widely seen in the wild for a long time. High prior this is legitimate; isolated detections on common-old files are usually false positives.
Fingerprint and provenance
- File name
- jarfix.exe
- Format
- Win32 EXE
- Code signing
- No verified publisher
- Size
- 71.8 KB
- Last analyzed
- Jun 28, 2026, 4:00 AM UTC
3a00c5b808954e9dca76418506eacec9cb1cb0fd844318a896ebae787f5eaae2Safety & FAQ
Complete recovery guidance and answers for the next decision.
What to do now
This file appears low risk based on the evidence available now.
- Recovery step 01
Run it only when it came from the developer's official site or another source you independently trust.
- Recovery step 02
A clean result reduces known risk, but it cannot guarantee that every new or targeted threat has been detected.
- Recovery step 03
Keep your antivirus and Windows updates switched on so you stay protected.
Safety FAQ
Direct answers grounded in the saved verdict and evidence in this report.
Is jarfix.exe safe?
What is jarfix.exe?
How many antivirus engines detected jarfix.exe?
What is the SHA-256 hash of jarfix.exe?
Is it safe to run jarfix.exe?
How up to date is this analysis of jarfix.exe?
Community
Member reviews and reports for this exact file hash.