Our call: Is PolarInstaller.exe safe?Suspicious
- 1 high-confidence signature or behavior rule matched this file.Derived · Signature and behavior rules
- 0 of 75 antivirus engines flagged the file.Observed · Antivirus analysis
- The hash has been submitted 7 times from 6 sources.Derived · Saved report facts
de6a60745bc1023d15…71d2a85dacBefore running
Do not run it until the source and publisher can be verified independently.
If you already ran it
Stop using it, scan the device, and watch for unexpected behavior or security alerts. Get a fresh copy from the developer's official site or an official app store.
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
Not runNo contacted-host reputation check is recorded.
No timestamp recordedYARA
Complete2 signature or behavior rules matched.
External intel
Complete3 of 3 independent reference sources completed.
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
PolarInstaller.exe
de6a60745bc1023d157bd72c0d80142a74826f7ad9c1f7d1cc1b0571d2a85dac
01Uploaded file
Processes
Runtime execution
- ProcessObserved
Observed process
"C:\Users\<USER>\Desktop\PolarInstaller_6.0.2.exe"
02Isolated runtime analysis - ProcessObserved
Observed process
C:\Windows\system32\services.exe
03Isolated runtime analysis
Files
Created or changed
- Written fileObserved
Download-1.tmp
C:\Windows\ServiceProfiles\LocalService\AppData\Local\FontCache\Fonts\Download-1.tmp
04Isolated runtime analysis - Written fileObserved
Microsoft Compatibility Appraiser
C:\Windows\System32\Tasks\Microsoft\Windows\Application Experience\Microsoft Compatibility Appraiser
05Isolated runtime analysis
5 recorded facts from one runtime window. Every fact remains independently traceable in the evidence ledger below.
Why these facts are shown
Each statement identifies whether it was directly recorded or derived from saved scan facts.
- 01
1 high-confidence signature or behavior rule matched this file.
Verdict inputView chapterProvenanceDerivedSourceSignature and behavior rulesObserved at - 02
0 of 75 antivirus engines flagged the file.
ProvenanceObservedSourceAntivirus analysisObserved at - 03
The hash has been submitted 7 times from 6 sources.
ProvenanceDerivedSourceSaved report factsObserved at - 04
Scanned file: PolarInstaller.exe — de6a60745bc1023d157bd72c0d80142a74826f7ad9c1f7d1cc1b0571d2a85dac
ProvenanceObservedSourceUploaded fileObserved at - 05
Observed process — "C:\Users\<USER>\Desktop\PolarInstaller_6.0.2.exe"
ProvenanceObservedSourceIsolated runtime analysisObserved at - 06
Observed process — C:\Windows\system32\services.exe
ProvenanceObservedSourceIsolated runtime analysisObserved at - 07
File written: Download-1.tmp — C:\Windows\ServiceProfiles\LocalService\AppData\Local\FontCache\Fonts\Download-1.tmp
ProvenanceObservedSourceIsolated runtime analysisObserved at - 08
File written: Microsoft Compatibility Appraiser — C:\Windows\System32\Tasks\Microsoft\Windows\Application Experience\Microsoft Compatibility Appraiser
ProvenanceObservedSourceIsolated runtime analysisObserved at
Intelligence
The complete saved assessment, kept intact and grounded in the scan evidence.
No saved analyst narrative
This report keeps the verified scan facts available below without inventing an analysis that was not saved with the scan.
Behavior
Plain-English impact first, then the observed runtime evidence.
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: 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).
Moderate concern: Removed execution artefacts or logs, which can conceal activity.
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.
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.
- C:\Windows\ServiceProfiles\LocalService\AppData\Local\FontCache\Fonts\Download-1.tmp
- C:\Windows\System32\Tasks\Microsoft\Windows\Application Experience\Microsoft Compatibility Appraiser
- C:\Users\user\AppData\Roaming
- \Sessions\1\BaseNamedObjects\Local\__DDrawExclMode__
- \Sessions\1\BaseNamedObjects\Local\__DDrawCheckExclMode__
Detection & Forensics
Consensus, attribution, signatures, code structure, prevalence, and identity.
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.
EvidenceC:\Windows\System32\svchost.exe -k NetworkService -pSandbox 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.exe
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
Moderate prevalence — neither rare nor common. No strong prior applies.
Fingerprint and provenance
- File name
- PolarInstaller.exe
- Format
- Win32 EXE
- Code signing
- No verified publisher
- Size
- 2.8 MB
- Last analyzed
- Jun 9, 2026, 3:56 PM UTC
de6a60745bc1023d157bd72c0d80142a74826f7ad9c1f7d1cc1b0571d2a85dacSafety & 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.
Don't run it unless you're certain it came from a source you trust.
Check where you got it — an unexpected attachment or a random download link is a red flag.
If you're unsure, delete it. Get a fresh copy from the developer's official site or an official app store.
If you're still unsure, scan it again in a day or two — detections often catch up on newer files.
Safety FAQ
- PolarInstaller.exe is suspicious — treat it as unsafe until you're sure. No antivirus engine flagged it; the cautious verdict comes from other saved evidence such as identity, prevalence, signing, or runtime signals. Don't run it unless you fully trust where it came from. Get a fresh copy from the developer's official site or an official app store.
- PolarInstaller.exe is a Windows executable program, about 2.8 MB. We identify a file by its cryptographic hash rather than its name, because the same filename can be reused by completely different files — the hash below is the reliable fingerprint.
- None — 0 of 75 antivirus engines flagged PolarInstaller.exe. That's reassuring, though it is not proof that a file is safe, so we also weigh its behaviour, identity, and reputation.
- Act quickly. 1) Disconnect the device from the internet to stop the malware communicating or spreading. 2) Run a full scan with reputable anti-malware software (such as Malwarebytes) and quarantine everything it finds. 3) Change your important passwords from a DIFFERENT, clean device — many threats log keystrokes or steal saved credentials. 4) If you bank or shop on this device, watch closely for fraud and alert your bank. 5) For a confirmed infection, the most reliable fix is to back up your personal files and reinstall the operating system for a clean start.
- To remove PolarInstaller.exe: 1) restart into Safe Mode (Safe Mode with Networking if you need to download a tool) so the malware doesn't auto-start. 2) Run a full scan with reputable anti-malware software and let it quarantine or delete the detections. 3) Delete the original PolarInstaller.exe file and empty the Recycle Bin/Trash. 4) Check your browser extensions, startup items, and scheduled tasks for anything unfamiliar. 5) Reboot and scan again to confirm it's gone. If detections keep coming back, a clean operating-system reinstall is the most dependable cure.
- No — PolarInstaller.exe is not digitally signed. Plenty of legitimate files are unsigned too, so this isn't damning by itself, but it does mean there's no cryptographic proof of who published it.
- The SHA-256 hash of PolarInstaller.exe is de6a60745bc1023d157bd72c0d80142a74826f7ad9c1f7d1cc1b0571d2a85dac, and its MD5 is 7b4280b8c7b875e4574bcfca797d0741. This hash is the file's unique fingerprint — two files with the same SHA-256 are identical. Use it to confirm you're looking at exactly this file (not just one with the same name) when comparing against antivirus databases or a download's published checksum.
- This report reflects the scan run on June 9, 2026. Because a file's hash never changes, the identity of PolarInstaller.exe is fixed — but antivirus coverage improves over time, so a file that looks clean today can pick up detections later (and vice-versa). If you need the latest picture, MalwareTips staff can re-run the analysis from scratch.
