Is ffx_fsr3upscaler_x64.dll safe?
No antivirus engine detected this verified CD PROJEKT DLL, while five closely related signed files received consistent clean assessments.
All 74 antivirus engines produced no malicious or suspicious finding, including 17 tier-1 engines. The verified CD PROJEKT signature and five closely related files with prior clean assessments substantially outweigh the sandbox technique mappings, though the observed IP lacks a completed reputation check.
fae7be78fe234ba2da…8ac315fc1d7e0cRecommended next actions
Before using
Use it only as part of software obtained from the developer's official site or another source you independently trust.
If you already used 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.
The reasoning behind this verdict
This section explains the evidence supporting the verdict and keeps conflicting or missing signals visible.
All 74 antivirus engines produced no malicious or suspicious finding, including 17 tier-1 engines. The verified CD PROJEKT signature and five closely related files with prior clean assessments substantially outweigh the sandbox technique mappings, though the observed IP lacks a completed reputation check.
The DLL received no malicious or suspicious detection from any of 74 antivirus engines, and all 17 tier-1 participants were silent. Its code signature verifies to CD PROJEKT S.A., with no publisher mismatch or packing indicators. Five similar files tied to the same signer, including one matching both imphash and signer, previously received clean assessments. One sandbox mapped activity to process injection and security-control impairment techniques, but it did not issue a malicious runtime judgment. The observed direct-IP connection remains a limitation because no complete host-reputation result is available.
What We Detected
No malicious or suspicious detection was reported by any of 74 antivirus engines, including all 17 tier-1 engines. The DLL has a verified signature from CD PROJEKT S.A., no detected brand mismatch, and no static indication that its code is packed.
Threat Behavior
One completed sandbox run mapped activity to T1055 and T1562.001, but it produced no malicious sandbox judgment. The run also recorded contact with 135.233.45.221; because the contacted-host reputation check is unavailable, that address cannot be characterized as benign or hostile. Ten written child artifacts were inspected without a malicious child finding, although their individual verdicts remain unknown.
What To Do Now
The antivirus results, valid publisher signature, and five aligned historical assessments strongly support normal software provenance. Keep endpoint protection enabled and obtain the DLL through the official game installation or update channel; investigate further if its signature fails verification or it appeared outside the expected application directory.
Where this verdict could be wrong4 caveats
- behaviour.offensiveTechniques includes T1055 and T1562.001, although the completed sandbox assigned no malicious verdict.
- MalwareTips.Synth.DirectIpC2 records contact with 135.233.45.221, but contactedHosts=null means its reputation was not completely checked.
- signing.signerStats.totalSamples=1 provides limited direct signer-history depth despite the five aligned similar-file verdicts.
- droppedChildren.rollup reports 10 unknown child verdicts, so hasMaliciousChild=false does not establish that every child was benign.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- 0/74 engines reported a malicious or suspicious result.
- All 17 tier-1 engines reported no detection.
- The code signature verifies to CD PROJEKT S.A.
- Five of five similar signed files received prior clean assessments.
- No brand mismatch, likely packing, or high-entropy code was detected.
- Sandbox mapping includes T1055 process injection.
- Sandbox mapping includes T1562.001 security-control impairment.
- Direct contact with 135.233.45.221 lacks a completed host-reputation check.
- All 10 inspected child artifacts retain unknown individual verdicts.
Use the DLL only as part of an official CD PROJEKT game installation or update, and keep endpoint protection enabled. Recheck the signature and source if the file was obtained separately.
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
Partial1 runtime contact was 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
- 15MITRE ATT&CK techniques
- 15spawned processes
- 1network 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
ffx_fsr3upscaler_x64.dll
fae7be78fe234ba2da3729fa7d9c65bdf513c31deeda5d95a28ac315fc1d7e0c
01Uploaded file
Processes
Runtime execution
- ProcessObserved
Observed process
"C:\Windows\sysnative\rundll32.exe" "C:\Users\<USER>\Desktop\ffx_fsr3upscaler_x64.dll",#1
02Isolated runtime analysis - ProcessObserved
Observed process
C:\Windows\system32\WerFault.exe -u -p 6204 -s 500
03Isolated runtime analysis - +1 more recorded observation in Analyst mode
Files
Created or changed
- Written fileObserved
Temp
C:\ProgramData\Microsoft\Windows\WER\Temp
04Isolated runtime analysis - Written fileObserved
a3ec9f2e-7a36-4220-93ff-ae4201b7a529
C:\ProgramData\Microsoft\Windows\WER\Temp\a3ec9f2e-7a36-4220-93ff-ae4201b7a529
05Isolated runtime analysis - +1 more recorded observation in Analyst mode
Network
Hosts contacted
- Contacted hostObserved
135.233.45.221
Contact observed during runtime.
06Isolated runtime analysis
6 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.
- 135.233.45.221
- C:\ProgramData\Microsoft\Windows\WER\Temp
- C:\ProgramData\Microsoft\Windows\WER\Temp\a3ec9f2e-7a36-4220-93ff-ae4201b7a529
- C:\ProgramData\Microsoft\Windows\WER\ReportQueue
- C:\ProgramData\Microsoft\Windows\WER\Temp\e3387106-3e25-45cd-8ca0-b746f160927b
- C:\ProgramData\Microsoft\Windows\WER\ReportArchive
- C:\ProgramData\Microsoft\Windows\WER\Temp\WERBEFA.tmp
- C:\ProgramData\Microsoft\Windows\WER\Temp\WERC6FA.tmp
- C:\ProgramData\Microsoft\Windows\WER\Temp\WERC8B1.tmp
- C:\ProgramData\Microsoft\Windows\WER\Temp\WERBEFA.tmp.dmp
- C:\ProgramData\Microsoft\Windows\WER\Temp\WERC6FA.tmp.WERInternalMetadata.xml
- Local\WERReportingForProcess6204
- Global\AmiProviderMutex_InventoryApplicationFile
- Global\282c85b1-b29b-4be6-8a39-db0057e89824
- \Sessions\1\BaseNamedObjects\Local\SessionImmersiveColorMutex
- \Sessions\1\BaseNamedObjects\Local\WERReportingForProcess6044
Files this sample writes at runtime
This file drops 10 children at runtime. None are currently flagged malicious in our cache.
- 0aec90556ec4bf93be35…1205f4Never scannednever seen before
- 6e0007beed27c119ec65…e6fbf9Never scannednever seen before
- 0c72cdc1a762cc596ff4…b0fd01Never scannednever seen before
- 7c6eeaaa3c3b8af9f0c0…6dcdb1Never scannednever seen before
- 031c76085ab24059e07f…adb35fNever scannednever seen before
- 2cf3005cd9bcc1ec49a8…8e207cNever scannednever seen before
- c333504ccdff3a2a3f0f…c8bbfaNever scannednever seen before
- f03f3442b3b862117ccd…f4a6ddNever scannednever seen before
- 58fea17b2cd2d15be393…2b2a04Never scannednever seen before
- 14130fcf59623a84bbbe…65015fNever 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
- 86sources 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 file has a valid code signature from CD PROJEKT S.A..
ProvenanceObservedSourceCode-signing metadataObserved at - 03
1 high-confidence signature or behavior rule matched this file.
Verdict inputView chapterProvenanceDerivedSourceSignature and behavior rulesObserved at - 04
Scanned file: ffx_fsr3upscaler_x64.dll — fae7be78fe234ba2da3729fa7d9c65bdf513c31deeda5d95a28ac315fc1d7e0c
ProvenanceObservedSourceUploaded fileObserved at - 05
Observed process — "C:\Windows\sysnative\rundll32.exe" "C:\Users\<USER>\Desktop\ffx_fsr3upscaler_x64.dll",#1
ProvenanceObservedSourceIsolated runtime analysisObserved at - 06
Observed process — C:\Windows\system32\WerFault.exe -u -p 6204 -s 500
ProvenanceObservedSourceIsolated runtime analysisObserved at - 07
File written: Temp — C:\ProgramData\Microsoft\Windows\WER\Temp
ProvenanceObservedSourceIsolated runtime analysisObserved at - 08
File written: a3ec9f2e-7a36-4220-93ff-ae4201b7a529 — C:\ProgramData\Microsoft\Windows\WER\Temp\a3ec9f2e-7a36-4220-93ff-ae4201b7a529
ProvenanceObservedSourceIsolated runtime analysisObserved at - 09
Contacted host: 135.233.45.221 — 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.
The saved runtime evidence maps this activity to MITRE T1055 (Process Injection). The mapping supports possible process injection, but it does not prove the exact injection method or the operator's intent.
Evidence"C:\Windows\sysnative\rundll32.exe" "C:\Users\<USER>\Desktop\ffx_fsr3upscaler_x64.dll",#1The 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.
Evidence135.233.45.221
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
Moderate prevalence — neither rare nor common. No strong prior applies.
Fingerprint and provenance
- File name
- ffx_fsr3upscaler_x64.dll
- Format
- Win32 DLL
- Code signing
- Signature valid: CD PROJEKT S.A.
- Size
- 190.6 KB
- Last analyzed
- Sep 23, 2026, 5:17 AM UTC
fae7be78fe234ba2da3729fa7d9c65bdf513c31deeda5d95a28ac315fc1d7e0cSafety & 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
Use it only as part of software obtained 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 ffx_fsr3upscaler_x64.dll safe?
What is ffx_fsr3upscaler_x64.dll?
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Is ffx_fsr3upscaler_x64.dll digitally signed?
What is the SHA-256 hash of ffx_fsr3upscaler_x64.dll?
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Community
Member reviews and reports for this exact file hash.