File scan report
Verdict Safe
Is Lunar Client -
Zero engine detections on a signed Overwolf installer with clean sandbox and file it created results.
Strong evidence · A verified publisher signature, and no engine flags it.
Proceed with installation after confirming the digital signature; the file shows no malicious indicators across engines, behaviour, or children.
Good practice2 tips
We found nothing harmful in this file.
Install it only if it came from the developer's own website or an official app store.
Keep your antivirus and Windows updates switched on.
No scanner can promise a file is 100% safe.
Reads the latest antivirus results for this file's hash. Nothing is uploaded.
Antivirus results
0 of 69 flagged
- Flagged 0
- No detection 69
- No result 4
- Code signing Overwolf Ltd
- Test run Completed
- First seen 3mo ago
Chapter 02
Why we think so
1 point against it and 4 in its favour, checked against the scan evidence.
The reasoning behind this verdict
All 69 antivirus engines that checked it returned clean. The file is signed by Overwolf Ltd with a 100% safe historical sample. Sandbox execution produced no malicious verdicts and no malicious files it created or contacted hosts.
The complete absence of malicious detections across major and smaller engines combined with verified signing by Overwolf Ltd strongly supports a benign classification. Similar-hash RAG shows a prior safe verdict on another Overwolf installer using the same signer. No malicious sandbox verdict. No complete contacted-host reputation result was available.
What We Detected
73 engines scanned the sample; zero returned malicious or suspicious labels. The executable is signed and timestamped by Overwolf Ltd. Sandbox analysis recorded typical installer behaviour: extraction of .NET and Electron libraries, launch of Edge WebView2, and DNS-resolved connections to lunarclientcdn.com and overwolf analytics devices.
Threat Behavior
Seven MITRE techniques were observed, primarily process creation and file writes inside the installer’s temporary directory. No persistence mechanisms, no control-server domains, and no encryption of user data were present. All ten files it created remain unclassified and none triggered malicious verdicts in downstream scans.
What To Do Now
The installer can be executed in a standard user environment. Verify the digital signature in Windows before launch and download future updates only from lunarclient.com or the official Overwolf distribution channel.
Where this verdict could be wrong1 caveat
- triggeredHeuristics show high-severity three of our behaviour rules, which could indicate malicious behaviour if the Overwolf certificate were abused.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- 0/69 engines flagged malicious
- verified signature by Overwolf Ltd
- no malicious sandbox verdict or files it created
- prior safe verdict on same signer
- rare and prevalence (only 2 submissions)
6 sources checked · 5 complete · 1 partial. See every source
Chapter 03
What it did in our test
It ran in our isolated test environment; no test environment rated what it did as risky.
Test run summary
Capture complete- 42sandbox rule tags
- 7spawned processes
- 15network contacts
- 40filesystem & mutex artifacts
What this file did when executed
This file was run in a sandbox and its runtime behaviour was observed.
Techniques observed in the sandbox
42MITRE ATT&CK techniques the sandbox mapped. Highlighted ones are rare in normal software; the others are common in legitimate programs too.
- T1010
- T1012
- T1014
- T1027· Obfuscated code
- T1027.002· Obfuscated code
- T1033· Reads user info
- T1036
- T1047
- T1053· Scheduled task
- T1055· Process injection
- T1057· Lists programs
- T1059· Runs commands
- T1070· Covers its tracks
- T1070.006· Covers its tracks
- T1071· Application protocol
- T1074
- T1082· System recon
- T1083· Scans your files
- T1105· Network file transfer
- T1112
- T1115
- T1125
- T1129· Loads modules
- T1134
- T1222
- T1485
- T1486· File encryption
- T1497· Sandbox evasion
- T1518· Checks your AV
- T1529
- T1542
- T1542.003
- +10 more
Observed activity
Processes started
7Programs the file ran, with their command lines.
Lunar Client - Installer.exe"C:\Users\<USER>\Desktop\Lunar Client - Installer.exe"OWinstaller.exe"C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\OWinstaller.exe" Sel=0&Extension=jilehohlakeokncafogkgnicgndeecdiengddbcc&UtmSource=client-site&UtmMedium=download-page&UtmCampaign=direct&Referer=www.lunarclient.com&Browser=chrome -partnerCustomizationLevel 1 -customPromoPages --owelectronUrl=https://launcherupdates.lunarclientcdn.com/latest-ow.yml -AllowWindowsInsider --disable-change-location --disable-ow-shortcut-ui --disable-app-shortcut-ui --enable-app-shortcut --eula-url=https://www.lunarclient.com/terms --privacy-url=https://www.lunarclient.com/privacy --silent-setup --app-name="Lunar …msedgewebview2.exe"C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.92\msedgewebview2.exe" --embedded-browser-webview=1 --webview-exe-name=OWinstaller.exe --webview-exe-version=2.304.0.13 --user-data-dir="C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\OWinstaller.exe.WebView2\EBWebView" --noerrdialogs --embedded-browser-webview-dpi-awareness=0 --edge-webview-custom-scheme --enable-features=MojoIpcz --force-device-scale-factor=1 --high-dpi-support=1 --mojo-named-platform-channel-pipe=3616.4512.5895814990181950858DxDiag.exe"C:\Windows\System32\DxDiag.exe" /xC:\Users\<USER>\AppData\Local\Overwolf\Temp\DxDiagOutput.xmlmsedgewebview2.exe"C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.92\msedgewebview2.exe" --type=crashpad-handler --user-data-dir=C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\OWinstaller.exe.WebView2\EBWebView /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler --database=C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\OWinstaller.exe.WebView2\EBWebView\Crashpad --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=122.0.6261.129 "--annotation=exe=C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.92\msedgewebview2.exe" --annotation=pl…msedgewebview2.exe"C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.92\msedgewebview2.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --noerrdialogs --user-data-dir="C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\OWinstaller.exe.WebView2\EBWebView" --webview-exe-name=OWinstaller.exe --webview-exe-version=2.304.0.13 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=0 --edge-webview-custom-scheme --no-appcompat-clear --mojo-platform-channel-handle=2080 --field-trial-handle=1916,i,5688798455287031547,10740310292758…
Show all 7 entries for processes started
OWinstaller.exeC:\Users\<USER>\AppData\Local\Temp\nsfD1AA.tmp\OWinstaller.exe Sel=0&Extension=jilehohlakeokncafogkgnicgndeecdiengddbcc&UtmSource=client-site&UtmMedium=download-page&UtmCampaign=direct&Referer=www.lunarclient.com&Browser=chrome -partnerCustomizationLevel 1 -customPromoPages --owelectronUrl=https://launcherupdates.lunarclientcdn.com/latest-ow.yml -AllowWindowsInsider --disable-change-location --disable-ow-shortcut-ui --disable-app-shortcut-ui --enable-app-shortcut --eula-url=https://www.lunarclient.com/terms --privacy-url=https://www.lunarclient.com/privacy --silent-setup --app-name=Lunar Clie…
Network contacts
1515 hosts, listed as 12 addresses, 3 links. Links show the host and path only.
- IP address
104.18.29.96 - IP address
3.169.202.80 - IP address
18.154.101.114 - IP address
18.154.101.94 - IP address
192.178.212.95 - IP address
3.169.202.6
Show all 15 entries for network contacts
- IP address
99.84.118.22 - IP address
18.238.176.32 - IP address
173.194.194.94 - IP address
104.18.28.96 - IP address
142.251.167.101 - IP address
3.170.3.128 - URL
https://launcherupdates.lunarclientcdn.com/latest-ow.yml - URL
https://analyticsnew.overwolf.com/analytics/Counter - URL
http://www.google-analytics.com/__utm.gif
Files
30Files the file created, changed or deleted.
- Written
C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\UserInfo.dll - Written
C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\System.dll - Written
C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\uac.dll - Written
C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\nsProcess.dll - Written
C:\Users\<USER>\AppData\Local\Overwolf\OWInstall.log - Written
C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\OWInstaller.exe
Show all 30 entries for files
- Written
C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\Newtonsoft.Json.dll - Written
C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\log4net.dll - Written
C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\DotNetZip.dll - Written
C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\Microsoft.Win32.TaskScheduler.dll - Written
C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\OverWolf.Client.CommonUtils.dll - Written
C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\SharpRaven.dll - Written
C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\websocket-sharp.dll - Written
C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\CommandLine.dll - Written
C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\OWInstaller.exe.config - Deleted
C:\Users\<USER>\AppData\Local\Temp\ow-electron\InstallerTrace_2026-07-07_20-33_3616.log - Deleted
C:\Users\<USER>\AppData\Local\Overwolf\Settings\bak\SettingsPageBasic.xml.bak - Deleted
C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\OWinstaller.exe.WebView2\EBWebView\BrowserMetrics-spare.pma - Deleted
C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\OWinstaller.exe.WebView2\EBWebView\Default\Code Cache\wasm\index-dir\the-real-index - Deleted
C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\OWinstaller.exe.WebView2\EBWebView\Default\Code Cache\js\index-dir\temp-index - Deleted
C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\OWinstaller.exe.WebView2\EBWebView\Default\Code Cache\wasm\index-dir\temp-index - Deleted
C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\OWinstaller.exe.WebView2\EBWebView\Default\Sync Data\LevelDB\000001.dbtmp - Deleted
C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\OWinstaller.exe.WebView2\EBWebView\Default\Site Characteristics Database\000001.dbtmp - Deleted
C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\OWinstaller.exe.WebView2\EBWebView\Default\shared_proto_db\000001.dbtmp - Deleted
C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\OWinstaller.exe.WebView2\EBWebView\Default\Extension State\000001.dbtmp - Deleted
C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\OWinstaller.exe.WebView2\EBWebView\BrowserMetrics\BrowserMetrics-6A4DC52D-15C4.pma - Deleted
C:\Users\<USER>\AppData\Local\Temp\edge_BITS_5572_1831829881\68591036-2289-4858-9f7f-9149e89c8a08 - Deleted
C:\Users\<USER>\AppData\Local\Temp\edge_BITS_5572_1831829881 - Deleted
C:\Users\<USER>\AppData\Local\Temp\chrome_Unpacker_BeginUnzipping5572_2141540227 - Deleted
C:\Users\<USER>\AppData\Local\Temp\nsmB5A5.tmp\OWinstaller.exe.WebView2\EBWebView\Default\Session Storage\000001.dbtmp
Registry and auto-start
12Settings the file changed, including ways to start again after a restart.
- Deleted
HKEY_CURRENT_USER\SOFTWARE\Microsoft\DirectX Diagnostic Tool\DxDiag In SystemInfo - Deleted
HKEY_CURRENT_USER\SOFTWARE\Microsoft\DirectX Diagnostic Tool\DxDiag In DirectShow - Deleted
HKEY_CURRENT_USER\SOFTWARE\Microsoft\DirectX Diagnostic Tool\DxDiag In Media Foundation - Deleted
HKEY_CURRENT_USER\SOFTWARE\Microsoft\DirectX Diagnostic Tool\DxDiag In DirectSound - Deleted
HKEY_CURRENT_USER\SOFTWARE\Microsoft\DirectX Diagnostic Tool\DxDiag In VideoCapture - Deleted
HKEY_CURRENT_USER\SOFTWARE\Microsoft\DirectX Diagnostic Tool\DxDiag In Holographic
Show all 12 entries for registry and auto-start
- Deleted
HKEY_CURRENT_USER\SOFTWARE\Microsoft\EdgeWebView\PreferenceMACs\Default\extensions.settings - Deleted
HKEY_CURRENT_USER\SOFTWARE\Microsoft\DirectX Diagnostic Tool\DxDiag In DirectDraw - Deleted
HKEY_CURRENT_USER\SOFTWARE\Microsoft\DirectX Diagnostic Tool\DxDiag In USB Display - Deleted
HKEY_CURRENT_USER\SOFTWARE\Microsoft\DirectX Diagnostic Tool\DxDiag In DirectInput - Deleted
HKEY_CURRENT_USER\SOFTWARE\Microsoft\DirectX Diagnostic Tool\DxDiag In Diagnostics - Deleted
HKEY_CURRENT_USER\Software\Microsoft\Multimedia\ActiveMovie\Filter Cache
Mutexes
10Named locks a program uses so only one copy runs; malware families often reuse them.
C__Users_Bruno_AppData_Local_Temp_ow-electron_InstallerTrace_2026-07-07_20-33_3616.log_rollingOverwolfInstaller_Lunar ClientLocal\ChromeProcessSingletonStartup!__OMADM_NAMED_MUTEX__Local\DDrawWindowListMutexLocal\DDrawDriverObjectListMutex
Show all 10 entries for mutexes
DirectSound Administrator shared thread array (lockDirectInput.{89521361-AA8A-11CF-BFC7-444553540000}DirectInput.{5944E682-C92E-11CF-BFC7-444553540000}Global\OneSettingQueryMutex+compat+encapsulation
Sandbox background — not the file
9The analysis machine's own processes and connections, recorded in every run.
- VM process
services.exeC:\Windows\system32\services.exe - VM process
svchost.exeC:\Windows\System32\svchost.exe -k NetworkService -p - VM process
svchost.exeC:\Windows\system32\svchost.exe -k UnistackSvcGroup - VM process
svchost.exeC:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s StorSvc - VM process
svchost.exeC:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s WdiSystemHost - VM process
lsass.exeC:\Windows\system32\lsass.exe
Show all 9 entries for sandbox background — not the file
- VM process
svchost.exeC:\Windows\system32\svchost.exe -k LocalService -s W32Time - VM process
svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p - VM host
8.8.8.8
Files this sample writes at runtime
This file drops 9 children at runtime. None are currently flagged malicious in our cache. 9 have no saved verdict and were not checked; that is missing coverage, not a finding.
- 9c46f7929b08c87518aa…cdb3beNot checkedno saved verdict
- 4da28ba55f43cc1d03d5…6c512eNot checkedno saved verdict
- 5c2fba2311105df5c850…411b3dNot checkedno saved verdict
- b152284fd1ef5cebee56…b4cb1fNot checkedno saved verdict
- c69ad6c6a1d6d89336e1…be49ddNot checkedno saved verdict
- 078382c80c2c3b4f6452…3eb976Not checkedno saved verdict
- 5091f122e60714f35dbc…1a0c45Not checkedno saved verdict
- 83fff6ded423944d0d6d…61c383Not checkedno saved verdict
- af10225db6ff7d4b67d0…9dc9aeNot checkedno saved verdict
Chapter 04
Technical details
None of the 69 antivirus engines that checked it flag it; signed by Overwolf Ltd.
Sources checked
Every check behind this verdict
6 sources checked · 5 complete · 1 partial. Complete means the check returned a usable result; it does not mean the file is safe.
File fingerprint
- Last analyzed
- Jul 7, 2026, 9:19 PM UTC
- SHA-256
57fac95018b945565454396e7481619c07cd6b13acdbdd3342577ebcd51263b6- SHA-1
6a3a6b157ca16c6bce131b81c36b829aeaecacd0- MD5
3cefec25c59d5983749a4a03e6fb165f
About this file
Lunar Client - Installer.exe is a Win32 EXE file of 3.2 MB.
- Type and size
- Win32 EXE · 3.2 MB
- Signer
- Overwolf LtdValid code signature.
- First seen
- Jul 7, 2026On VirusTotal.
- Submitted by
- 2 distinct sourcesRarely seen: few people have submitted this exact file.
- Packer
- None detected
- Entropy
- 8.00 of 8
First scanned Updated
Antivirus consensus
0 of 69 engines flagged this file
4 of the 73 engines returned no result for this file (file type not supported, or the scan did not finish), so they did not check it.
- Tier-118 engines0flagged
- Tier-235 engines0flagged
- Low-trust16 engines0flagged
View all 73 engine results
- AcronisClean
- AhnLab-V3Clean
- AlibabaClean
- alibabacloudClean
- ALYacClean
- Antiy-AVLClean
- APEXClean
- ArcabitClean
- AvastClean
- Avast-MobileNo result
- AVGClean
- AviraClean
- BitDefenderClean
- BitDefenderFalxNo result
- BkavClean
- CAT-QuickHealClean
- ClamAVClean
- CMCClean
- CrowdStrikeClean
- CTXClean
- CylanceClean
- CynetClean
- DrWebClean
- ElasticClean
- EmsisoftClean
- ESET-NOD32Clean
- F-SecureClean
- FortinetClean
- GDataClean
- GoogleClean
- GridinsoftClean
- huorongClean
- IkarusClean
- JiangminClean
- K7AntiVirusClean
- K7GWClean
- KasperskyClean
- KingsoftClean
- LionicClean
- MalwarebytesClean
- MaxSecureClean
- McAfeeDClean
- MicrosoftClean
- MicroWorld-eScanClean
- NANO-AntivirusClean
- PaloaltoClean
- PandaClean
- RisingClean
- SangforClean
- SentinelOneClean
- SkyhighClean
- SophosClean
- SUPERAntiSpywareClean
- SymantecClean
- SymantecMobileInsightNo result
- TACHYONClean
- tehtrisClean
- TencentClean
- TrellixENSClean
- TrendMicroClean
- TrendMicro-HouseCallClean
- TrustlookNo result
- VaristClean
- VBA32Clean
- VIPREClean
- VirITClean
- ViRobotClean
- WebrootClean
- XcitiumClean
- YandexClean
- ZillyaClean
- ZoneAlarmClean
- ZonerClean
Signatures and behavior heuristics
Low-severity pattern matches — worth noting but not on their own cause for alarm.
VirusTotal's sandbox summary maps this run to MITRE T1055 (Process Injection), but no injected process of the sample's own was recorded (the analysis VM's own WMI adapter, crash handlers and Chrome updater are not counted). VirusTotal maps T1055 on about half of all files no engine flags, so the mapping alone is not evidence of injection.
EvidenceT1055 (sandbox MITRE mapping)
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
Rarely uploaded, and first seen more than two weeks ago. Often niche legitimate software or internal tooling; not a strong malware signal on its own.
Chapter 05
Questions & answers
Short answers to the 7 questions people ask most about this file.
Is Lunar Client - Installer.exe safe?
What is Lunar Client - Installer.exe?
How many antivirus engines detected Lunar Client - Installer.exe?
Is Lunar Client - Installer.exe digitally signed?
What is the SHA-256 hash of Lunar Client - Installer.exe?
Is it safe to install Lunar Client - Installer.exe?
How up to date is this analysis of Lunar Client - Installer.exe?
Community
Member reviews and reports for this exact file hash.