Is SteamSetup.exe safe?
Official Valve-signed Steam installer with zero engine detections and widespread legitimate distribution.
All 75 engines returned clean. The file is signed by Valve Corp., matches the known SteamSetup.exe NSIS installer, and shows no malicious sandbox or network behaviour.
7d3654531c32d941b8…92f245a0a12bcbRecommended 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.
The reasoning behind this verdict
This section explains the evidence supporting the verdict and keeps conflicting or missing signals visible.
All 75 engines returned clean. The file is signed by Valve Corp., matches the known SteamSetup.exe NSIS installer, and shows no malicious sandbox or network behaviour.
Zero malicious detections across 75 engines, including 16 tier-1 engines, eliminates any malware signal. The certificate belongs to Valve Corp. and the file is a common, long-standing Steam installer. Sandbox results, dropped children, and contacted-no complete contacted-host reputation result was available. The YARA and MITRE flags are consistent with a legitimate NSIS-based signed installer and do not override the engine consensus.
What We Detected
75/75 engines returned clean. The executable is signed and timestamped by Valve Corp. on 2024-05-20. It is an NSIS installer that drops the Steam client and service binaries into Program Files.
Threat Behavior
No malicious sandbox verdict, no malicious dropped children, and no complete contacted-host reputation result was available. Observed MITRE techniques (T1055, LSASS access, persistence) are normal installer/service-registration activity for the Steam client.
What To Do Now
The file is the legitimate Steam installer. Keep Windows Defender and other security software enabled; no further action is required.
Where this verdict could be wrong1 caveat
- YARAify returned 4 rules (Detect_NSIS_Nullsoft_Installer, NSIS_April_2024, certificate rules) — expected for a legitimate NSIS-based installer and not a malicious indicator.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- Valve Corp. digital signature verified
- 0/75 engines flagged malicious
- Widely distributed legitimate Steam installer
- Clean sandbox and network reputation results
The file can be executed without concern; it is the official SteamSetup installer from Valve.
Coverage & freshness
Complete means the check returned a usable result. It does not mean the file is safe.
Antivirus
Complete0 of 75 engines flagged the file.
Sandbox
Complete1 isolated runtime environment contributed observations.
Network
Partial5 of 25 contacted hosts were cross-checked; coverage is incomplete.
YARA
Complete8 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
- 39MITRE ATT&CK techniques
- 15spawned processes
- 28network 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
SteamSetup.exe
7d3654531c32d941b8cae81c4137fc542172bfa9635f169cb392f245a0a12bcb
01Uploaded file
Processes
Runtime execution
- ProcessObserved
Observed process
"C:\Users\<USER>\Desktop\program.exe"
02Isolated runtime analysis - ProcessObserved
Observed process
C:\Windows\Explorer.EXE
03Isolated runtime analysis - +1 more recorded observation in Analyst mode
Files
Created or changed
- Written fileObserved
nswCE6C.tmp
C:\Users\<USER>\AppData\Local\Temp\nswCE6C.tmp
04Isolated runtime analysis - Written fileObserved
System.dll
C:\Users\<USER>\AppData\Local\Temp\nsrCE8D.tmp\System.dll
05Isolated runtime analysis - +1 more recorded observation in Analyst mode
Network
Hosts contacted
- Contacted hostObserved
199.232.215.52
Contact observed during runtime.
06Isolated runtime analysis - Contacted hostObserved
104.18.20.213
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.
- 199.232.215.52
- 104.18.20.213
- 199.232.215.82
- 104.18.21.213
- 192.168.0.51
- 20.99.186.246
- 23.216.81.152
- 23.216.147.76
- 192.168.0.5
- 23.216.147.64
- http://r13.c.lencr.org/113.crl
- http://r12.c.lencr.org/10.crl
- http://cacerts.digicert.com/DigiCertTrustedG4RSA4096SHA256TimeStampingCA.crt
- http://cacerts.digicert.com/DigiCertTrustedG4CodeSigningRSA4096SHA3842021CA1.crt
- http://crt.sectigo.com/SectigoPublicCodeSigningCAR36.crt
- http://www.microsoft.com/pki/certs/MicCodSigPCA_08-31-2010.crt
- Steam Client Service
- C:\Users\<USER>\AppData\Local\Temp\nswCE6C.tmp
- C:\Users\<USER>\AppData\Local\Temp\nsrCE8D.tmp\System.dll
- C:\Users\<USER>\AppData\Local\Temp\nsrCE8D.tmp\modern-header.bmp
- C:\Users\<USER>\AppData\Local\Temp\nsrCE8D.tmp\modern-wizard.bmp
- C:\Users\<USER>\AppData\Local\Temp\nsrCE8D.tmp\nsDialogs.dll
- C:\Users\<USER>\AppData\Local\Temp\nsrCE8D.tmp\modern-header.bmp
- C:\Users\<USER>\AppData\Local\Temp\nsrCE8D.tmp\modern-wizard.bmp
- C:\Users\<USER>\AppData\Local\Temp\nsrCE8D.tmp\nsDialogs.dll
- C:\Users\<USER>\AppData\Local\Temp\nsrCE8D.tmp\nsExec.dll
- C:\Users\<USER>\AppData\Local\Temp\nsrCE8D.tmp\nsProcess.dll
- SteamSingleInstance
- Local\InternetShortcutMutex
- cversions.3.m
- Global\OneSettingQueryMutex+compat+encapsulation
- NULL
Files this sample writes at runtime
This file drops 10 children at runtime. None are currently flagged malicious in our cache.
- fbc09c1b9a55d04b57be…91b05bNever scannednever seen before
- f4370281335c1b45718d…eb4107Never scannednever seen before
- d8a20dd2c9bf3abcd163…b3a314Never scannednever seen before
- ba82765c4e15026a8ffb…2db06eNever scannednever seen before
- 7c192b81ab67e34c8463…4ab043Never scannednever seen before
- ac3706ebbb78cfba74e5…0aba8fNever scannednever seen before
- e279c71136a3969cdec8…eb1132Never scannednever seen before
- 3d18d59ed87bd6ebcf76…55f3daNever scannednever seen before
- f4343274a97389f3e55a…788503Never scannednever seen before
- 4246c0b859204919663e…faeb9bNever 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.
- 8rule hits recorded
- 0 / 75engines flagged
- 3,701sources 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 75 antivirus engines flagged the file.
Verdict inputView chapterProvenanceObservedSourceAntivirus analysisObserved at - 02
The hash appears in a known-software reference database.
Verdict inputView chapterProvenanceObservedSourceReference software databaseObserved at - 03
The hash has a long, established submission history across 3,701 sources.
Verdict inputView chapterProvenanceDerivedSourceSubmission historyObserved at - 04
Scanned file: SteamSetup.exe — 7d3654531c32d941b8cae81c4137fc542172bfa9635f169cb392f245a0a12bcb
ProvenanceObservedSourceUploaded fileObserved at - 05
Observed process — "C:\Users\<USER>\Desktop\program.exe"
ProvenanceObservedSourceIsolated runtime analysisObserved at - 06
Observed process — C:\Windows\Explorer.EXE
ProvenanceObservedSourceIsolated runtime analysisObserved at - 07
File written: nswCE6C.tmp — C:\Users\<USER>\AppData\Local\Temp\nswCE6C.tmp
ProvenanceObservedSourceIsolated runtime analysisObserved at - 08
File written: System.dll — C:\Users\<USER>\AppData\Local\Temp\nsrCE8D.tmp\System.dll
ProvenanceObservedSourceIsolated runtime analysisObserved at - 09
Contacted host: 199.232.215.52 — Contact observed during runtime.
ProvenanceObservedSourceIsolated runtime analysisObserved at - 10
Contacted host: 104.18.20.213 — Contact observed during runtime.
ProvenanceObservedSourceIsolated runtime analysisObserved at
Detection sources at a glance
The available sources did not agree on a named threat category.
One or more independent reference databases matched 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.
- Detect_NSIS_Nullsoft_Installer
- PE_Digital_Certificate
- NSIS_April_2024
- PE_Potentially_Signed_Digital_Certificate
Sandbox flagged persistence indicators (registry Run keys / services / scheduled tasks).
EvidenceSteam Client ServiceThe 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.
EvidenceC:\Windows\Explorer.EXESandbox observed process activity targeting LSASS (Windows credential store). Legitimate software has no business reading LSASS memory — this is Mimikatz-shape behaviour.
EvidenceC:\Windows\system32\lsass.exeThe 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.
Evidence199.232.215.52 · 104.18.20.213 · 199.232.215.82
0 of 75 engines flagged this file
View all 75 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
- SteamSetup.exe
- Format
- Win32 EXE
- Code signing
- Signature valid: Valve Corp.
- Size
- 2.3 MB
- Last analyzed
- Aug 12, 2026, 6:36 PM UTC
7d3654531c32d941b8cae81c4137fc542172bfa9635f169cb392f245a0a12bcbSafety & 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 SteamSetup.exe safe?
What is SteamSetup.exe?
How many antivirus engines detected SteamSetup.exe?
Is SteamSetup.exe digitally signed?
What is the SHA-256 hash of SteamSetup.exe?
Is it safe to run SteamSetup.exe?
How up to date is this analysis of SteamSetup.exe?
Community
Member reviews and reports for this exact file hash.