Is harver-system-checker.exe safe?Suspicious
This signed executable exhibits complex installation behaviours and process injection patterns, triggering heuristic alerts despite limited engine consensus on its malicious nature.
- 1 high-confidence signature or behavior rule matched this file.
- 1 of 73 antivirus engines flagged the file, including DrWeb.
- The file has a valid code signature from Harver B.V..
4ffc6e789f9f35d313…951b931df3Before opening
Do not run it until the source and publisher can be verified independently.
If you already ran it
Close it, scan the device, and watch for unexpected processes or security alerts.
Coverage & freshness
A completed check means the source returned a result. It does not, by itself, guarantee that the file is safe.
Antivirus
Complete1 of 73 engines flagged the file.
Sandbox
Complete1 isolated runtime environment contributed observations.
Network
Complete1 contacted host was cross-checked.
YARA
Complete2 signature or behavior rules matched.
External intel
Complete3 of 3 independent reference sources completed.
Attack story
A bounded view of the runtime evidence saved with this scan. Connectors mean “also observed,” not a proven causal chain.
- File
harver-system-checker.exe
4ffc6e789f9f…931df3
Observed - Process
Observed process
%SAMPLEPATH%\4ffc6e789f9f35d313ef3ed75b44bab98240da082a0f700a3ab99d951b931df3.exe
Observed - Process
Observed process
%USERPROFILE%\AppData\Local\Programs\@harversaas-diagnostic-app\Harver System Checker.exe
Observed - Written file
System.dll
C:\Users\<USER>\AppData\Local\Temp\nsk86CB.tmp\System.dll
Observed - Written file
StdUtils.dll
C:\Users\<USER>\AppData\Local\Temp\nsk86CB.tmp\StdUtils.dll
Observed - Contacted host
192.168.0.26
Contact observed during runtime.
Observed - Contacted host
20.99.133.109
Contact observed during runtime.
Observed
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.
Signature and behavior rulesView chapterVerdict inputDerived - 02
1 of 73 antivirus engines flagged the file, including DrWeb.
Antivirus analysisView chapterVerdict inputObserved - 03
The file has a valid code signature from Harver B.V..
Code-signing metadataView chapterObserved
Intelligence
The complete saved assessment, kept intact and grounded in the scan evidence.
The reasoning behind this verdict
This section explains the evidence supporting the verdict and keeps conflicting or missing signals visible.
The file is signed by Harver B.V. but lacks established reputation. While it triggered heuristic alerts for process injection and direct-IP communication, only one of 73 engines identified it as malicious, suggesting the behaviour may be related to its installation process.
Our analysis shows a signed file with rare prevalence and complex behavioural patterns. While the presence of process injection and direct-IP communication is concerning, the lack of broad engine consensus and the absence of known malicious network activity suggest the file is not definitively malicious. The mixed signals from similar hashes further support a cautious classification. We recommend treating this file as suspicious until further evidence of malicious intent is observed.
What We Detected
The file harver-system-checker.exe is a signed Win32 executable. While it carries a valid signature from 'Harver B.V.', it lacks a track record in our database. Only 1 of 73 engines in our antivirus network flagged the file, specifically identifying it as Trojan.Siggen15.22474.
Threat Behavior
Our analysis observed several offensive techniques, including process injection (T1055) and direct-IP communication. These patterns often trigger heuristic alerts. However, these techniques are also common in complex, legitimate software installers that perform system diagnostics or updates. No malicious domains or known-bad IP addresses were contacted during execution.
What To Do Now
Given the mixed signals, we advise caution. If this file was obtained from an official source related to Harver B.V., it may be legitimate. If the source is unknown or untrusted, we recommend restricting its execution in a sandboxed environment or monitoring its network activity closely.
Where this verdict could be wrong3 caveats
- The single malicious detection by DrWeb is not corroborated by any other of the 72 reporting engines, suggesting a potential false positive or highly specific heuristic trigger.
- The file is signed by a valid corporate entity, which often accounts for complex installation behaviours that trigger heuristic alerts.
- The lack of malicious hits in our URL/IP cache and the absence of malicious dropped children suggest the file may be benign despite its complex behaviour.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- Valid code signature from 'Harver B.V.'
- Only 1/73 engines flagged as malicious
- No malicious contacted hosts
- No malicious dropped children
- Rare prevalence (2 submissions)
- Process injection (T1055) observed
- Direct-IP communication detected
- No established signer history
Treat as suspicious. Verify the source of the file and monitor its behaviour in a restricted environment.
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: Used an input-capture technique that can record credentials or keystrokes.
High concern: Created or modified a system service, which can keep code running.
High concern: Changed an auto-start location that can make code run after sign-in or restart.
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.
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.
- 192.168.0.26
- 20.99.133.109
- 192.229.211.108
- 172.217.13.238
- 216.239.32.29
- 172.217.135.7
- http://pki.goog/gsr1/gsr1.crt
- C:\Users\<USER>\AppData\Local\Temp\nsk86CB.tmp\System.dll
- C:\Users\<USER>\AppData\Local\Temp\nsk86CB.tmp\StdUtils.dll
- C:\Users\<USER>\AppData\Local\Temp\nsk86CB.tmp\SpiderBanner.dll
- C:\Users\<USER>\AppData\Local\Temp\nsk86CB.tmp\nsProcess.dll
- C:\Users\<USER>\AppData\Local\Temp\nsk86CB.tmp\app-32.7z
- %USERPROFILE%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Harver System Checker.lnk
- %USERPROFILE%\Desktop\Harver System Checker.lnk
- %USERPROFILE%\AppData\Local\Microsoft\Windows\Caches\{3DA71D5A-20CC-432F-A115-DFE92379E91F}.3.ver0x0000000000000018.db
- C:\Windows\System32\spp\store\2.0\cache\cache.dat
- %USERPROFILE%\AppData\Local\Temp\nscEAED.tmp\app-32.7z
- 57ba83c7-44cc-50c5-93e2-68092ebb1ce7
- \Sessions\1\BaseNamedObjects\57ba83c7-44cc-50c5-93e2-68092ebb1ce7
- \Sessions\1\BaseNamedObjects\Global\SyncRootManager
Files this sample writes at runtime
This file drops 10 children at runtime. None are currently flagged malicious in our cache.
- 3eb38ae99653a7dbc724…f2eacaNever scannednever seen before
- b72e9013a6204e9f0107…31601eNever scannednever seen before
- 996a259e53ca18b89ec3…882a93Never scannednever seen before
- 30c6c3dd3cc7fcea6e60…eb4d11Never scannednever seen before
- 603a9542e67141d6390f…98e843Never scannednever seen before
- b393f05e8ff919ef0711…adf592Never scannednever seen before
- 2630f4188bd2ea5451ca…6e15dfNever scannednever seen before
- d4740e17bc06a938525d…8dbdf7Never scannednever seen before
- 61bba6e85942d9fcb1e3…a632daNever scannednever seen before
- 0059d63a6dab70eb530c…752d73Never scannednever seen before
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.
Evidence%SAMPLEPATH%\4ffc6e789f9f35d313ef3ed75b44bab98240da082a0f700a3ab99d951b931df3.exeSample contacted 5 external IP address(es) and zero domains. Benign software virtually always uses DNS; no-DNS direct-IP C2 is a strong malware indicator because it bypasses reputation systems and dodges domain-based blocklists.
Evidence20.99.133.109 · 192.229.211.108 · 172.217.13.238
1 of 73 engines flagged this file
View all 73 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
Rarely uploaded, but has been around for a while. Often niche legitimate software or old internal tooling; not a strong malware signal on its own.
Fingerprint and provenance
- File name
- harver-system-checker.exe
- Format
- Win32 EXE
- Code signing
- Signature valid: Harver B.V.
- Size
- 51.0 MB
- Last analyzed
- Jul 23, 2026, 8:58 PM UTC
4ffc6e789f9f35d313ef3ed75b44bab98240da082a0f700a3ab99d951b931df3Safety & 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 email attachment or a random download link is a red flag.
If you're unsure, delete it. You can always re-download a clean copy from the official source.
If you're still unsure, scan it again in a day or two — detections often catch up on newer files.
Safety FAQ
- harver-system-checker.exe is suspicious — treat it as unsafe until you're sure. 1 of 73 antivirus engines flag it, which isn't a strong consensus but is enough to be cautious. Don't run it unless you fully trust where it came from, and prefer downloading the software fresh from its official site.
- harver-system-checker.exe is a Windows executable program, about 51 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.
- 1 of 73 antivirus engines flagged harver-system-checker.exe, 1 of them as outright malicious. A small number of detections can include false positives, so we weigh which engines flagged it and what else the file does, not just the raw count.
- 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 harver-system-checker.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 harver-system-checker.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.
- Yes — harver-system-checker.exe carries a valid digital signature from Harver B.V., which confirms the file hasn't been tampered with since that publisher signed it. A valid signature is a positive signal, but note that malware is occasionally signed with stolen or abused certificates, so it isn't proof of safety on its own.
- The SHA-256 hash of harver-system-checker.exe is 4ffc6e789f9f35d313ef3ed75b44bab98240da082a0f700a3ab99d951b931df3, and its MD5 is 506f3f725b514151736d25cf10610fce. 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 July 23, 2026. Because a file's hash never changes, the identity of harver-system-checker.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.