File scan report
Verdict Safe
Is Bootstrapper.
This is the ESET Online Scanner bootstrapper, validly signed by ESET, with none of the 62 antivirus engines that checked it flagging it and sandbox runs showing only normal…
Read the whole reasonShow less
Strong evidence · A verified publisher signature, and no engine flags it.
This appears to be the genuine ESET Online Scanner and can be used; obtain it from ESET's official site and verify the ESET signature before running.
Good practice2 tips
We found nothing harmful in this file.
Run 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.
Antivirus results
0 of 62 flagged
- Flagged 0
- No detection 62
- No result 13
- Code signing ESET, spol. s r.o.
- Test run Completed
- First seen 3mo ago
Chapter 02
Why we think so
0 points against it and 5 in its favour, checked against the scan evidence.
The reasoning behind this verdict
The file carries a valid ESET, spol. s r.o. signature and none of the 62 antivirus engines that checked it flagged it. In five sandbox runs it installed the ESET Online Scanner into the user profile and contacted only ESET and certificate-status servers. It has been submitted by over 2,300 sources since it was first seen on Jul 9, 2026.
The executable is signed with a verified certificate from ESET, a publisher on our trusted list. None of the 62 antivirus engines that checked it flagged it, including 14 major antivirus engines that returned clean results. Sandbox runs show it unpacking ESETOnlineScanner.exe and supporting libraries into the user's AppData folder and creating shortcuts, which matches the product it claims to be. Network contacts went to ESET download, banner and scanner hosts plus certificate status checks, and none of the 14 hosts we checked are known bad. The community YARA matches are generic anti-debug, certificate and compiler rules that ordinary software triggers.
What We Detected
None of the 62 antivirus engines that checked it flagged this file. It carries a valid code signature from ESET, spol. s r.o., and has been submitted by 2,384 distinct sources since it was first seen on Jul 9, 2026. Five community YARA rules matched, all generic checks for anti-debugging, certificates and compiler traits.
Threat Behavior
Across five sandbox runs the file launched esetonlinescanner.exe and its helper process, wrote the ESET Online Scanner program files and shortcuts, and contacted ESET servers and a certificate-status service. No injection into another process was recorded and no high-risk techniques were observed. An outside sandbox mentioned in a community comment gave a moderate malicious score, but its listed network activity was limited to ESET infrastructure.
What To Do Now
The file is consistent with the official ESET Online Scanner. Download it from ESET's own website when possible, keep your existing antivirus enabled, and confirm the ESET signature in the file properties before running it.
Where this verdict could be wrong1 caveat
- A community comment reports an outside sandbox scoring the file 42/100 as malicious, but that run listed only ESET-owned domains and none of our recorded sandbox verdicts were malicious.
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 ESET, spol. s r.o., a trusted publisher
- None of the 62 antivirus engines that checked it flagged the file
- Sandbox runs show normal ESET Online Scanner installation and ESET-only network contacts
- Submitted by over 2,300 distinct sources
- None of the 14 contacted hosts we checked are known malicious
6 sources checked · all complete. See every source
Chapter 03
What it did in our test
It ran in 5 isolated tests; no test environment rated what it did as risky.
Test run summary
Capture complete- 5isolated sandbox runs
- 28sandbox rule tags
- 6spawned processes
- 12network contacts
- 27filesystem & mutex artifacts
What this file did when executed
This file was detonated in 5 sandboxes and its runtime behaviour was observed.
Techniques observed in the sandbox
28MITRE ATT&CK techniques the sandbox mapped. Highlighted ones are rare in normal software; the others are common in legitimate programs too.
- T1010
- T1012
- T1027· Obfuscated code
- T1027.002· Obfuscated code
- T1033· Reads user info
- T1036
- T1055· Process injection
- T1057· Lists programs
- T1059· Runs commands
- T1071· Application protocol
- T1082· System recon
- T1083· Scans your files
- T1095· Custom network
- T1105· Network file transfer
- T1129· Loads modules
- T1222
- T1497· Sandbox evasion
- T1497.001· Sandbox evasion
- T1518· Checks your AV
- T1518.001· Checks your AV
- T1539
- T1547.001· Auto-start
- T1560
- T1564.003· Hides artifacts
- T1573
- T1574.001· Execution hijack
- T1614
- T1614.001
Observed activity
Processes started
6Programs the file ran, with their command lines.
esetonlinescanner.exe"C:\Users\<USER>\Desktop\esetonlinescanner.exe"ESETOnlineScannerBTS.exe"C:\Users\<USER>\AppData\Local\ESET\ESETOnlineScanner\ESETOnlineScannerBTS.exe" --bts-container 6104 "C:\Users\<USER>\Desktop\esetonlinescanner.exe"ESETOnlineScanner.exeesetonlinescanner.exe"C:\Users\user\Desktop\esetonlinescanner.exe"ESETOnlineScannerBTS.exe"C:\Users\user\AppData\Local\ESET\ESETOnlineScanner\ESETOnlineScannerBTS.exe" --bts-container 6284 "C:\Users\user\Desktop\esetonlinescanner.exe"ESETOnlineScanner.exeC:\Users\user\AppData\Local\ESET\ESETOnlineScanner\ESETOnlineScanner.exe ESETOnlineScanner.exe
Network contacts
1212 hosts, listed as 8 domains, 4 addresses, 18 links. Links show the host and path only.
- Domain
go.eset.com - Domain
download.eset.com - Domain
status.thawte.com - Domain
onlinescanner.eset.com - Domain
banner.eset.com - Domain
ves-io-19fe0bf6-3a43-4231-8f7a-fb397ddcd8c3.ac.vh.ves.io
Show all 30 entries for network contacts
- Domain
download.gtm.eset.com - Domain
onlinescanner.gtm.eset.com - IP address
159.60.151.106 - IP address
38.90.226.111 - IP address
91.228.166.51 - IP address
91.228.167.30 - URL
http://download.eset.com/special/detectav/detectav.xml - URL
http://status.thawte.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBRzhKfQYsAHQZZDzb8RtQ5PgsTjQQQUpYz%2BMszrDyzUGcYIuAAkiF3DxbcCEAJdIrDRorZG1GVNMyAJOl8%3D - URL
http://status.thawte.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBRzhKfQYsAHQZZDzb8RtQ5PgsTjQQQUpYz%2BMszrDyzUGcYIuAAkiF3DxbcCEAFbqt7qzL4TUosjDc91djk%3D - URL
http://onlinescanner.eset.com/query/chsquery.php - URL
http://banner.eset.com/banner-v2/data/images/eos_v3_home/v1/default/1033/Banner.json - URL
http://banner.eset.com/banner-v2/data/images/eos_v3_home/default/v1/Background.png - URL
http://banner.eset.com/banner-v2/data/images/eos_v3/v1/default/1033/Banner.json - URL
http://banner.eset.com/banner-v2/data/images/eos_v3/v1/default/Banner2.png - URL
http://banner.eset.com/banner-v2/data/images/eos_v3_home/default/v1/1033/Text_Home_1033_enu.html - URL
http://banner.eset.com/banner-v2/data/images/eos_v3/v1/default/1033/Text_1033_enu_b2.html - URL
http://banner.eset.com/banner-v2/data/images/eos_v3/v1/default/Banner3.png - URL
http://banner.eset.com/banner-v2/data/images/eos_v3/v1/default/1033/Text_1033_enu_b3.html - URL
http://banner.eset.com/banner-v2/data/images/eos_v3/v1/default/Banner4.png - URL
http://banner.eset.com/banner-v2/data/images/eos_v3/v1/default/1033/Text_1033_enu_b4.html - URL
http://banner.eset.com/banner-v2/data/images/eos_v3/v1/default/Background.png - URL
http://banner.eset.com/banner-v2/data/images/eos_v3/v1/default/1033/Text_1033_enu.html - URL
https://download.eset.com/com/eset/tools/installers/av_detector/v1/1.104.0.0/detectavdb_windefend.dat - URL
https://download.eset.com/com/eset/tools/online_scanner/latest/ver.txt
Files
17Files the file created, changed or deleted.
- Written
C:\Users\<USER>\AppData\Local\ESET\ESETOnlineScanner\ESETOnlineScannerBTS.exe - Written
C:\Users\<USER>\AppData\Local\Temp\eset\bts\bootstrapper_20260709194414.log - Written
C:\Users\<USER>\AppData\Local\ESET\ESETOnlineScanner\sciter-x.dll - Written
C:\Users\<USER>\AppData\Local\ESET\ESETOnlineScanner\esdkW.dll - Written
C:\Users\<USER>\AppData\Local\ESET\ESETOnlineScanner\ESETOnlineScanner.exe - Written
C:\Users\<USER>\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\ESET Online Scanner.lnk
Show all 17 entries for files
- Written
C:\Users\<USER>\AppData\Local\ESET\ESETOnlineScanner\eos3ini.json - Written
C:\Users\<USER>\AppData\Local\ESET\ESETOnlineScanner\periodic_notify_upgrade.png - Written
C:\Users\<USER>\Desktop\ESET Online Scanner.lnk - Written
C:\Users\<USER>\AppData\Local\Temp\log.txt - Written
C:\ProgramData\Microsoft\Windows Security Health\Logs - Written
C:\Users\user\AppData\Local\ESET - Written
C:\Users\user\AppData\Local\ESET\ESETOnlineScanner - Written
C:\Users\user\AppData\Local\ESET\ESETOnlineScanner\Char_Cache - Written
C:\Users\user\AppData\Local\ESET\ESETOnlineScanner\ESETOnlineScanner.exe - Deleted
C:\Users\<USER>\AppData\Local\Packages\Microsoft.XboxGamingOverlay_8wekyb3d8bbwe\LocalCache\KnownGameList.bin - Deleted
C:\Users\<USER>\AppData\Local\Microsoft\GameDVR\KnownGameList.update
Registry and auto-start
12Settings the file changed, including ways to start again after a restart.
- Set
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\SessionInfo\1\ApplicationViewManagement\W32:00000000000801BE\VirtualDesktop - Set
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\SessionInfo\1\ApplicationViewManagement\W32:000000000016002E\VirtualDesktop - Set
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\Shell\Bags\1\Desktop\IconLayouts - Set
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\Shell\Bags\1\Desktop\IconNameVersion - Set
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Search\InstalledWin32AppsRevision - Set
HKEY_USERS\S-1-5-21-4270068108-2931534202-3907561125-1001\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.exe\OpenWithProgids\exefile
Show all 12 entries for registry and auto-start
- Set
HKEY_CURRENT_USER_Classes\WOW6432Node\CLSID\{23A5B06E-20BB-4E7E-A0AC-6982ED6A6041} - Set
HKEY_CURRENT_USER_Classes\WOW6432Node\CLSID\{23A5B06E-20BB-4E7E-A0AC-6982ED6A6041}\LocalServer32 - Set
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Eset - Set
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Eset\ESET Online Scanner - Set
HKEY_CURRENT_USER_Classes\WOW6432Node\CLSID\{23A5B06E-20BB-4E7E-A0AC-6982ED6A6041}\LocalServer32\NULL - Set
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Eset\ESET Online Scanner\EOSSerial
Mutexes
10Named locks a program uses so only one copy runs; malware families often reuse them.
zCSMComm.Server.Id.BTS-Container-Comm.6104EOS_v2 is runningcversions.3.mGlobal\OneSettingQueryMutex+compat+encapsulationzCSMComm.Server.Id.BTS-Container-Comm.2132\Sessions\1\BaseNamedObjects\zCSMComm.Server.Id.BTS-Container-Comm.6284
Show all 10 entries for mutexes
\BaseNamedObjects\Local\SM0:6732:304:WilStaging_02\BaseNamedObjects\Local\SM0:6732:120:WilError_03\BaseNamedObjects\Local\ZonesCacheCounterMutex\BaseNamedObjects\Local\ZonesLockedCacheCounterMutex
Sandbox background — not the file
11The analysis machine's own processes and connections, recorded in every run.
- VM process
Explorer.EXEC:\Windows\Explorer.EXE - 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 LocalService -s W32Time
Show all 11 entries for sandbox background — not the file
- VM process
lsass.exeC:\Windows\system32\lsass.exe - VM process
svchost.exeC:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s WdiSystemHost - VM process
svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p - VM host
eip-terr-na.cdp1.digicert.com.akahost.net - VM host
nexusrules.officeapps.live.com
Files this sample writes at runtime
This file drops 10 children at runtime. None are currently flagged malicious in our cache. 10 have no saved verdict and were not checked; that is missing coverage, not a finding.
- b7b00184a8bc068588d5…d81b79Not checkedno saved verdict
- 36492c0186372f39846c…fbfdf3Not checkedno saved verdict
- 034b2f4c418f331b8492…1c0caaNot checkedno saved verdict
- b5e889ba827364f26557…608441Not checkedno saved verdict
- 9e4315e73bb376c4cd88…2159c6Not checkedno saved verdict
- 098af22a1ca165f89c9c…89c19eNot checkedno saved verdict
- dc77620818971793960e…a19020Not checkedno saved verdict
- 2b75f7770ca4041e3abf…d21d7cNot checkedno saved verdict
- cac95f037db5335b086e…3cfb49Not checkedno saved verdict
- 8969b43f0a9823603062…de4122Not checkedno saved verdict
Chapter 04
Technical details
None of the 62 antivirus engines that checked it flag it; signed by ESET, spol. s r.o..
Sources checked
Every check behind this verdict
6 sources checked · all complete. Complete means the check returned a usable result; it does not mean the file is safe.
File fingerprint
- Last analyzed
- Oct 24, 2026, 8:54 AM UTC
- SHA-256
d43d70e6aebe0a5e34fc767d046993375921c23d39ea3feb79de90ceecd617f7- SHA-1
894650c55969b614419576413c571e2f399934b4- MD5
91f6a5838640470ee93bdf8d12cec9ea
About this file
Bootstrapper.exe says it is ESET Online Scanner (ESET Security), 8.4 MB.
- Claims to be
- ESET Online Scanner (ESET Security)From the file's own version information, written by whoever built it.
- Original name
- Bootstrapper.exeMatches the shared file name.
- Type and size
- Win32 EXE · 8.4 MB
- Signer
- ESET, spol. s r.o.Valid code signature.
- First seen
- Jul 9, 2026On VirusTotal.
- Submitted by
- 2,384 distinct sources
- Packer
- None detected
- Entropy
- 7.91 of 8
First scanned
Antivirus consensus
0 of 62 engines flagged this file
13 of the 75 engines returned no result for this file (file type not supported, or the scan did not finish), so they did not check it.
- Tier-114 engines0flagged
- Tier-232 engines0flagged
- Low-trust16 engines0flagged
View all 75 engine results
- AcronisClean
- AhnLab-V3Clean
- AlibabaClean
- alibabacloudClean
- ALYacClean
- Antiy-AVLClean
- APEXClean
- ArcabitClean
- AvastNo result
- Avast-MobileNo result
- AVGNo result
- AviraClean
- BitDefenderClean
- BitDefenderFalxNo result
- BkavClean
- CAT-QuickHealClean
- ClamAVNo result
- CMCClean
- CrowdStrikeClean
- CTXClean
- CylanceClean
- CynetClean
- DeepInstinctClean
- DrWebClean
- ElasticNo result
- 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
- RisingNo result
- SangforClean
- SentinelOneClean
- SkyhighNo result
- SophosClean
- SUPERAntiSpywareClean
- SymantecClean
- SymantecMobileInsightNo result
- TACHYONClean
- tehtrisNo result
- TencentClean
- TrapmineClean
- TrellixENSNo result
- TrendMicroNo result
- TrendMicro-HouseCallClean
- TrustlookNo result
- VaristClean
- VBA32Clean
- VIPREClean
- VirITClean
- ViRobotClean
- WebrootClean
- XcitiumClean
- YandexClean
- ZillyaClean
- ZoneAlarmClean
- ZonerClean
Signatures and behavior heuristics
Community YARA rules matched, but all of them are generic capability, anti-debug or compiler rules that ordinary software also matches. Worth noting, not on their own cause for alarm.
- DebuggerCheck__APIgeneric
- golang_bin_JCorn_CSC846generic
- pe_detect_tls_callbacksgeneric
- PE_Digital_Certificategeneric
- TH_AntiVM_MassHunt_Win_Malware_2026_CYFAREgeneric
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
Widely uploaded, but first seen within the last six months. No strong prior applies.
Chapter 05
Questions & answers
Short answers to the 7 questions people ask most about this file.
Is Bootstrapper.exe safe?
What is Bootstrapper.exe?
How many antivirus engines detected Bootstrapper.exe?
Is Bootstrapper.exe digitally signed?
What is the SHA-256 hash of Bootstrapper.exe?
Is it safe to run Bootstrapper.exe?
How up to date is this analysis of Bootstrapper.exe?
Community
Member reviews and reports for this exact file hash.