Is SKlauncher-4.0.29-web-setup.exe safe?
A lone generic detection contrasts with process-injection and LSASS indicators plus three YARA matches, leaving this unsigned installer materially concerning but unconfirmed.
Only 1 of 74 engines flagged the installer, with no tier-1 detection or agreed malware family. However, the completed sandbox recorded offensive technique mappings including process injection and LSASS-related activity, while three community YARA rules matched; the unsigned status and incomplete network-reputation coverage warrant caution.
62b2d500c04740285f…0012748861a14bRecommended next actions
Before installing
Do not install it until the source and publisher can be verified independently.
If you already installed it
Stop using it, scan the device, and watch for unexpected behavior or security alerts. Download a fresh installer from the developer's official site or an official app store.
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.
Only 1 of 74 engines flagged the installer, with no tier-1 detection or agreed malware family. However, the completed sandbox recorded offensive technique mappings including process injection and LSASS-related activity, while three community YARA rules matched; the unsigned status and incomplete network-reputation coverage warrant caution.
Kingsoft alone reported a generic injector label among 74 engines, while ten reporting tier-1 engines found nothing and no family consensus formed. One completed sandbox nevertheless produced mappings for process injection, token manipulation, destructive behavior, and privilege escalation, plus a heuristic indicating LSASS targeting. Three YARA rules matched, including anti-virtualization and ransomware-oriented signatures, although the NSIS rule is format-related and none establishes a definitive family. The executable is unsigned, and all ten inspected dropped children lack conclusive verdicts rather than having established benign status. Observed GitHub infrastructure was not flagged, but only four hosts were inspected against six IP contacts and the URL hosts, so network reputation coverage is incomplete.
What We Detected
Kingsoft was the only detector among 74 engines, labeling the file Win32.Troj.injector.v. No tier-1 engine reported a detection and no malware-family consensus formed. The installer is unsigned and has no established publisher history.
Threat Behavior
One completed sandbox run mapped activity to T1055, T1134, T1485, T1486, and T1548. A separate heuristic reported LSASS-related process activity, which is unusual for an installer. Three YARA rules also matched: one identifies the NSIS format, while the others target anti-analysis behavior and VECT ransomware-like patterns. The sandbox did not issue a malicious verdict, found no persistence indicators, and no inspected child was confirmed malicious; however, all ten child verdicts remain unknown.
What To Do Now
Do not run this copy on a production system until its SHA-256 is confirmed through the project's official release channel. Keep endpoint protection enabled, and if execution is necessary, use an isolated test environment with network monitoring and no sensitive credentials.
Where this verdict could be wrong5 caveats
- Only 1/74 engines detected the sample, and all ten reporting tier-1 engines returned no detection; several other tier-1 engines timed out.
- behaviour.hasMaliciousSandboxVerdict=false, persistenceIndicators is empty, and droppedChildren.hasMaliciousChild=false, although all ten child verdicts remain unknown.
- The observed download URL is under github.com/sklauncher/binaries, and contactedHosts marks github.com and release-assets.githubusercontent.com as safe; host coverage is incomplete.
- Detect_NSIS_Nullsoft_Installer is an installer-format rule rather than a malware-family rule, so not all three YARA matches carry equal weight.
- The file has medium prevalence with 3,582 sources and 7,673 submissions, which is less consistent with a narrowly distributed payload.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- Only 1/74 engines reported a detection
- engines.tier1Malicious=0 and no family consensus
- behaviour.hasMaliciousSandboxVerdict=false
- droppedChildren.hasMaliciousChild=false
- 3,582 sources and 7,673 submissions indicate meaningful prevalence
- Unsigned Win32 installer with no verified publisher identity
- Sandbox mapping to T1055 process injection
- Heuristic evidence of LSASS targeting
- Five offensive MITRE technique mappings
- Three YARA matches, including anti-VM and ransomware-oriented rules
- Incomplete reputation coverage for observed network contacts
Avoid executing this hash unless it can be verified against the project's official release. Keep security protection enabled and use isolation if further testing is required.
Coverage & freshness
Complete means the check returned a usable result. It does not mean the file is safe.
Antivirus
Complete1 of 74 engines flagged the file.
Sandbox
Complete1 isolated runtime environment contributed observations.
Network
Partial4 of 10 contacted hosts were cross-checked; coverage is incomplete.
YARA
Complete6 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
- 36MITRE ATT&CK techniques
- 15spawned processes
- 10network contacts
- 37filesystem & mutex artifacts
What this file does
Observed actions and their security significance
High concern: Injected code into another process, a technique that can conceal execution.
High concern: Encrypted files or data, behaviour commonly associated with ransomware.
High concern: Changed an auto-start location that can make code run after sign-in or restart.
High concern: Attempted to impair or bypass security controls.
High concern: Manipulated how the operating system loads code, which can redirect execution.
Moderate concern: Contained obfuscated or packed code that makes inspection harder.
Moderate concern: Runs hidden system commands (script or shell).
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.
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
SKlauncher-4.0.29-web-setup.exe
62b2d500c04740285f9723071aa3dafc762246ba64205c98a10012748861a14b
01Uploaded file
Processes
Runtime execution
- ProcessObserved
Observed process
"C:\Users\<USER>\AppData\Local\Programs\sklauncher\sklauncher.exe"
02Isolated runtime analysis - ProcessObserved
Observed process
"C:\Users\<USER>\Desktop\SKlauncher-4.0.29-web-setup.exe"
03Isolated runtime analysis - +1 more recorded observation in Analyst mode
Files
Created or changed
- Written fileObserved
Connect
\Device\ConDrv\Connect
04Isolated runtime analysis - Written fileObserved
sklauncher_logs.txt
C:\Users\<USER>\AppData\Roaming\.sklauncher\logs\sklauncher_logs.txt
05Isolated runtime analysis - +1 more recorded observation in Analyst mode
Network
Hosts contacted
- Contacted hostObserved
140.82.114.4
Contact observed during runtime.
06Isolated runtime analysis - Contacted hostObserved
185.199.108.133
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.
- 140.82.114.4
- 185.199.108.133
- 23.200.156.19
- 104.18.21.213
- 185.199.110.153
- 150.171.110.195
- http://yr.c.lencr.org/
- http://yr2.c.lencr.org/30.crl
- https://github.com/sklauncher/binaries/releases/download/v4.0.29/sklauncher-4.0.29-x64.nsis.7z
- https://release-assets.githubusercontent.com/github-production-release-asset/1254575767/31540658-504d-4731-b551-e8655a525806?sp=r&sv=2018-11-09&sr=b&spr=https&se=2026-06-29T19%3A50%3A41Z&rscd=attachment%3B+filename%3Dsklauncher-4.0.29-x64.nsis.7z&rsct=application%2Foctet-stream&skoid=96c2d410-5711-43a1-aedd-ab1947aa7ab0&sktid=398a6654-997b-47e9-b12b-9515b896b4de&skt=2026-06-29T18%3A50%3A30Z&ske=2026-06-29T19%3A50%3A41Z&sks=b&skv=2018-11-09&sig=gxGK0fi5Vp8%2FHmoWngjzmKw%2FrapEubPBw0YBsgqE2zQ%3D&jwt=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmVsZWFzZS1hc3NldHMuZ2l0aHVidXNlcmNvbnRlbnQuY29tIiwia2V5Ijoia2V5MSIsImV4cCI6MTc4Mjc2Mjc3OSwibmJmIjoxNzgyNzU5MTc5LCJwYXRoIjoicmVsZWFzZWFzc2V0cHJvZHVjdGlvbi5ibG9iLmNvcmUud2luZG93cy5uZXQifQ._xl3itaGOo6xDracqU3JYID6PaCQlw7uE1uTnnhnDOU&response-content-disposition=attachment%3B%20filename%3Dsklauncher-4.0.29-x64.nsis.7z&response-content-type=application%2Foctet-stream
- \Device\ConDrv\Connect
- C:\Users\<USER>\AppData\Roaming\.sklauncher\logs\sklauncher_logs.txt
- C:\Users\<USER>\AppData\Roaming\sklauncher\lockfile
- C:\Users\<USER>\AppData\Roaming\.sklauncher\bin\electron-log-preload.js
- C:\Users\<USER>\AppData\Roaming\.sklauncher\bin\Local Storage\leveldb\LOG
- C:\Users\<USER>\AppData\Roaming\.sklauncher\bin\Code Cache\js\index-dir\the-real-index
- C:\Users\<USER>\AppData\Roaming\.sklauncher\bin\Local Storage\leveldb\000001.dbtmp
- C:\Users\<USER>\AppData\Roaming\.sklauncher\bin\Code Cache\js\index-dir\temp-index
- C:\Users\<USER>\AppData\Roaming\.sklauncher\bin\Code Cache\wasm\index-dir\the-real-index
- C:\Users\<USER>\AppData\Roaming\.sklauncher\bin\Code Cache\wasm\index-dir\temp-index
- Local\sklauncherProcessSingletonStartup
- Local\SessionImmersiveColorMutex
- af92b792-eff9-5fa8-b2c8-4e5cdb272f27
- Global\SyncRootManager
- cversions.3.m
Files this sample writes at runtime
This file drops 10 children at runtime. None are currently flagged malicious in our cache.
- fbcfe23a2ecb82b7100c…dc0f2dNever scannednever seen before
- da3f122d19f811a0ee68…fde700Never scannednever seen before
- 96ad1146eb96877eab59…87dcf7Never scannednever seen before
- 00a739d7cd55afd6ebb0…ba82dcNever scannednever seen before
- 08f3989c8a09abbe8ac8…42bd29Never scannednever seen before
- c3ea7442a1c92df7be0b…fd72baNever scannednever seen before
- 50c53a13675e9f8d0508…69c13aNever scannednever seen before
- bda99f1a434fd8d58bdd…5e0348Never scannednever seen before
- b1e963d702392fb72247…c0cdecNever scannednever seen before
- 0f1bad70c7bd1e0a6956…780443Never 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.
- 6rule hits recorded
- 1 / 74engines flagged
- 3,582sources in submission history
Why these facts are shown
Each statement identifies whether it was directly recorded or derived from saved scan facts.
- 01
4 high-confidence signature or behavior rules matched this file.
Verdict inputView chapterProvenanceDerivedSourceSignature and behavior rulesObserved at - 02
1 of 74 antivirus engines flagged the file, including Kingsoft.
Verdict inputView chapterProvenanceObservedSourceAntivirus analysisObserved at - 03
YARAify matched 3 researcher rules to this file.
ProvenanceDerivedSourceSaved report factsObserved at - 04
Scanned file: SKlauncher-4.0.29-web-setup.exe — 62b2d500c04740285f9723071aa3dafc762246ba64205c98a10012748861a14b
ProvenanceObservedSourceUploaded fileObserved at - 05
Observed process — "C:\Users\<USER>\AppData\Local\Programs\sklauncher\sklauncher.exe"
ProvenanceObservedSourceIsolated runtime analysisObserved at - 06
Observed process — "C:\Users\<USER>\Desktop\SKlauncher-4.0.29-web-setup.exe"
ProvenanceObservedSourceIsolated runtime analysisObserved at - 07
File written: Connect — \Device\ConDrv\Connect
ProvenanceObservedSourceIsolated runtime analysisObserved at - 08
File written: sklauncher_logs.txt — C:\Users\<USER>\AppData\Roaming\.sklauncher\logs\sklauncher_logs.txt
ProvenanceObservedSourceIsolated runtime analysisObserved at - 09
Contacted host: 140.82.114.4 — Contact observed during runtime.
ProvenanceObservedSourceIsolated runtime analysisObserved at - 10
Contacted host: 185.199.108.133 — 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
- TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE
- VECT_Ransomware
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.
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.
Evidence140.82.114.4 · 185.199.108.133 · 23.200.156.19
1 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
- SKlauncher-4.0.29-web-setup.exe
- Format
- Win32 EXE
- Code signing
- No verified publisher
- Size
- 838.3 KB
- Last analyzed
- Sep 15, 2026, 4:29 PM UTC
62b2d500c04740285f9723071aa3dafc762246ba64205c98a10012748861a14bSafety & FAQ
Complete recovery guidance and answers for the next decision.
What to do now
We couldn't fully clear this file. Treat it with caution.
- Recovery step 01
Don't install it unless you're certain it came from a source you trust.
- Recovery step 02
Check where you got it — an unexpected attachment or a random download link is a red flag.
- Recovery step 03
If its origin cannot be confirmed, delete this file and use a fresh copy from a trusted source. Download a fresh installer from the developer's official site or an official app store.
- Recovery step 04
If you're still unsure, scan it again in a day or two — detections often catch up on newer files.
Safety FAQ
Direct answers grounded in the saved verdict and evidence in this report.
Is SKlauncher-4.0.29-web-setup.exe safe, or is it malware?
What is SKlauncher-4.0.29-web-setup.exe?
How many antivirus engines detected SKlauncher-4.0.29-web-setup.exe?
What should I do if I already installed SKlauncher-4.0.29-web-setup.exe?
How do I remove SKlauncher-4.0.29-web-setup.exe?
What is the SHA-256 hash of SKlauncher-4.0.29-web-setup.exe?
How up to date is this analysis of SKlauncher-4.0.29-web-setup.exe?
Community
Member reviews and reports for this exact file hash.