File scan report
Verdict Safe
Is Frosty Fix. dll safe? Yes, no threats found.
FrostyFix is a widely shared, nearly four-year-old modding utility that none of the 71 antivirus engines that checked it flag, with only uncorroborated community YARA matches as…
Read the whole reasonShow less
Strong evidence · Widely seen for a long time, and nothing harmful found.
Running this file is reasonable if you obtained it from the official FrostyFix GitHub project. Keep your security software enabled while using it.
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 71 flagged
- Flagged 0
- No detection 71
- No result 4
- Code signing Unsigned
- Test run Completed
- First seen 3y ago
Chapter 02
Why we think so
3 points against it and 4 in its favour, checked against the scan evidence.
The reasoning behind this verdict
None of the 71 antivirus engines that checked it flagged this file, including all 17 major antivirus engines that returned results. It has been seen by more than 2,600 independent submitters since late 2022. The sandbox run ended clean, and its network activity was a GitHub update check. Two community YARA rules matched, but nothing else supports them.
Zero detections across 75 engines, with every major antivirus engine silent, is a strong clean signal for a file this widely distributed and this old. The sandbox run returned clean, and its only notable network call was a request to the project's own GitHub release feed. None of the 38 contacted hosts we inspected are known malicious or suspicious. Two community YARA rules, including one for the Jupyter infostealer, matched with no engine agreement, so we read them as pattern overlap. The missing code signature is a minor weakness for a hobbyist open-source tool.
What We Detected
None of the 71 antivirus engines that checked it flagged this file. It has circulated among more than 2,600 submitters since December 2022. Four community YARA rules matched: two generic ones, plus a Discord-domain rule and a Jupyter infostealer rule. No engine or malware database corroborates any of them. The file is not code-signed.
Threat Behavior
In one sandbox run the program loaded the .NET runtime and opened a browser link to install .NET 6. It also queried GitHub for the latest FrostyFix release, which is normal update-check behaviour. The run ended with a clean result. An injection mapping named a Windows WMI helper and Google updater processes, which looks like background system activity. No persistence was recorded.
What To Do Now
The file appears to be the FrostyFix game-modding helper. Download it only from the project's official GitHub page, and keep your antivirus enabled.
Where this verdict could be wrong3 caveats
- Two malware-specific community YARA rules matched, including one written for the Jupyter/Solarmarker infostealer, though no antivirus engine agrees.
- The sandbox mapped process injection into a Windows WMI helper, though the targets look like the analysis machine's own background activity.
- The file is unsigned, so no publisher identity backs it.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- None of the 71 antivirus engines that checked it flagged the file.
- More than 2,600 independent submitters have seen it over nearly four years.
- The sandbox run ended clean, and the app contacted its own GitHub release page to check for updates.
- None of the 38 contacted hosts we inspected are known malicious or suspicious.
- The file has no code-signing certificate.
- Two community YARA rules matched, including one aimed at an infostealer family.
- The sandbox mapped a process-injection technique, though the targets look like system background activity.
6 sources checked · all complete. 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- 14sandbox rule tags
- 8spawned processes
- 21network contacts
- 40filesystem & mutex artifacts
What this file did when executed
This file was run in a sandbox and its runtime behaviour was observed.
Sandbox verdicts
1- VT: CLEANclean
Techniques observed in the sandbox
14MITRE ATT&CK techniques the sandbox mapped. Highlighted ones are rare in normal software; the others are common in legitimate programs too.
- T1012
- T1036
- T1046
- T1055· Process injection
- T1059· Runs commands
- T1071· Application protocol
- T1082· System recon
- T1095· Custom network
- T1129· Loads modules
- T1518.001· Checks your AV
- T1539
- T1564· Hides artifacts
- T1564.001· Hides artifacts
- T1573
Observed activity
Processes started
8Programs the file ran, with their command lines.
file.exe"C:\Users\<USER>\AppData\Local\Temp\file.exe"chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --single-argument https://aka.ms/dotnet-core-applaunch?framework=Microsoft.NETCore.App&framework_version=6.0.0&arch=x64&rid=win-x64&os=win10&gui=truechrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\<USER>\AppData\Local\Google\Chrome\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\<USER>\AppData\Local\Google\Chrome\User Data\Crashpad" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=122.0.6261.112 --initial-client-data=0x204,0x208,0x20c,0x1dc,0x210,0x7ffd11dfdc40,0x7ffd11dfdc4c,0x7ffd11dfdc58elevation_service.exe"C:\Program Files\Google\Chrome\Application\122.0.6261.112\elevation_service.exe"chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --mojo-platform-channel-handle=2108 --field-trial-handle=1868,i,1950897951688547338,1955466294144608250,262144 --variations-seed-version=20240616-180131.065000 /prefetch:3chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=en-US --service-sandbox-type=none --no-appcompat-clear --mojo-platform-channel-handle=4712 --field-trial-handle=1868,i,1950897951688547338,1955466294144608250,262144 --variations-seed-version=20240616-180131.065000 /prefetch:8
Show all 8 entries for processes started
FrostyFix.exe%SAMPLEPATH%\FrostyFix.exec9eea9bc435b5f5d93f45cf5b378ca6b15bd6da696de81d5fbc38410268ee9ee.exe%SAMPLEPATH%\c9eea9bc435b5f5d93f45cf5b378ca6b15bd6da696de81d5fbc38410268ee9ee.exe
Network contacts
2121 hosts, listed as 17 domains, 4 addresses, 3 links. Links show the host and path only.
- Domain
aka.ms - Domain
accounts.google.com - Domain
_googlecast._tcp.local - Domain
api.github.com - Domain
www.googletagmanager.com - Domain
part-0010.t-0009.fdv2-t-msedge.net
Show all 24 entries for network contacts
- Domain
statics-marketingsites-wcus-ms-com.akamaized.net - Domain
js.monitor.azure.com - Domain
update.googleapis.com - Domain
part-0036.t-0009.fdv2-t-msedge.net - Domain
microsoftmscompoc.tt.omtrdc.net - Domain
content-autofill.googleapis.com - Domain
mboxedge35-alb.tt.omtrdc.net - Domain
c-bing-com.a-0001.a-msedge.net - Domain
shed.dual-low.part-0010.t-0009.fdv2-t-msedge.net - Domain
clarity.azurefd.net - Domain
part-0039.t-0009.t-msedge.net - IP address
89.35.237.180 - IP address
64.233.181.84 - IP address
23.37.17.215 - IP address
23.216.147.56 - URL
http://89.35.237.180/filestreamingservice/files/992e5603-eb95-4850-a7a9-0173a38b1fe2 - URL
http://89.35.237.180/filestreamingservice/files/992e5603-eb95-4850-a7a9-0173a38b1fe2/pieceshash - URL
https://api.github.com/repos/Dyvinia/FrostyFix/releases/latest
Files
30Files the file created, changed or deleted.
- Written
C:\Program Files\chrome_BITS_5268_267418305\neifaoindggfcjicffkgpmnlppeffabd_1.0.2738.0_win64_kj4dp5kifwxbdodqls7e5nzhtm.crx3 - Written
C:\Program Files\chrome_BITS_5268_1602510892\obedbbhbpmojnkanicioggnmelmoomoc_20240429.634529504.14_all_ENUS500000_jtpqgijs6dadhfri2u4vxcrx3e.crx3 - Written
C:\ProgramData\Microsoft\NetFramework\BreadcrumbStore\netcore,runtime.win-x64.Microsoft.NETCore.DotNetHostPolicy - Written
C:\ProgramData\Microsoft\NetFramework\BreadcrumbStore\netcore,Microsoft.NETCore.App.Runtime.win-x64 - Written
C:\ProgramData\Microsoft\NetFramework\BreadcrumbStore\netcore,Gapotchenko.FX,2022.2.7 - Written
C:\ProgramData\Microsoft\NetFramework\BreadcrumbStore\netcore,runtime.win-x64.Microsoft.NETCore.DotNetHostPolicy,6.0.3
Show all 30 entries for files
- Written
C:\ProgramData\Microsoft\NetFramework\BreadcrumbStore\netcore,Gapotchenko.FX.Text,2022.2.7 - Written
C:\ProgramData\Microsoft\NetFramework\BreadcrumbStore\netcore,Gapotchenko.FX - Written
C:\ProgramData\Microsoft\NetFramework\BreadcrumbStore\netcore,Gapotchenko.FX.Diagnostics.CommandLine,2022.2.7 - Written
C:\ProgramData\Microsoft\NetFramework\BreadcrumbStore\netcore,Gapotchenko.FX.Diagnostics.CommandLine - Written
C:\ProgramData\Microsoft\NetFramework\BreadcrumbStore\netcore,Gapotchenko.FX.Diagnostics.Process,2022.2.7 - Written
C:\ProgramData\Microsoft\NetFramework\BreadcrumbStore\netcore,Gapotchenko.FX.Diagnostics.Process - Written
C:\ProgramData\Microsoft\NetFramework\BreadcrumbStore\netcore,Gapotchenko.FX.Text - Written
C:\ProgramData\Microsoft\NetFramework\BreadcrumbStore\netcore,Microsoft.WindowsDesktop.App.Runtime.win-x64,6.0.3 - Written
C:\ProgramData\Microsoft\NetFramework\BreadcrumbStore\netcore,Gapotchenko.FX.Threading,2022.2.7 - Deleted
C:\ProgramData\Microsoft\Network\Downloader\res1.log - Deleted
C:\ProgramData\Microsoft\Network\Downloader\res2.log - Deleted
C:\Program Files\chrome_BITS_5268_267418305\BIT6514.tmp - Deleted
C:\Program Files\chrome_BITS_5268_1602510892\BITFF32.tmp - Deleted
C:\ProgramData\Microsoft\Windows\WER\Temp\WER178A.tmp.WERInternalMetadata.xml - Deleted
C:\ProgramData\Microsoft\Windows\WER\Temp\WER178B.tmp.WERInternalMetadata.xml - Deleted
C:\ProgramData\Microsoft\Windows\WER\Temp\WER1866.tmp.csv - Deleted
C:\ProgramData\Microsoft\Windows\WER\Temp\WER1865.tmp.csv - Deleted
C:\ProgramData\Microsoft\Windows\WER\Temp\WER18A6.tmp.txt - Deleted
C:\ProgramData\Microsoft\Windows\WER\Temp\WER18A5.tmp.txt - Deleted
C:\Windows\System32\spp\store\2.0\cache\cache.dat - Deleted
C:\ProgramData\Microsoft\Windows\WER\Temp\WER3786.tmp.WERInternalMetadata.xml - Deleted
C:\ProgramData\Microsoft\Windows\WER\Temp\WER3841.tmp.csv - Deleted
C:\ProgramData\Microsoft\Windows\WER\Temp\WER3881.tmp.txt - Deleted
C:\ProgramData\Microsoft\Windows\WER\Temp\WER3D14.tmp.WERInternalMetadata.xml
Registry and auto-start
15Settings the file changed, including ways to start again after a restart.
- Set
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix - Set
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix - Set
HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Notifications\Data\418A073AA3BC1C75 - Set
HKEY_LOCAL_MACHINE\Software\WOW6432Node\Google\Update\ClientStateMedium\{8A69D345-D564-463c-AFF1-A69D9E530F96}\LastWasDefault - Set
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Google\Chrome - Set
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Google\Chrome\Extensions
Show all 15 entries for registry and auto-start
- Set
HKEY_CURRENT_USER\Software\Google\Chrome\PreferenceMACs\Default\extensions.settings - Set
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Google\Update\ClientStateMedium\{8A69D345-D564-463C-AFF1-A69D9E530F96}\LastWasDefault\S-1-5-21-1015118539-3749460369-599379286-1001 - Set
HKEY_CURRENT_USER\Software\Google\Chrome\PreferenceMACs\Default\extensions.settings\ahfgeienlihckogmohjhadlkjgocpleb - Set
HKEY_CURRENT_USER\Software\Google\Chrome\PreferenceMACs\Default\extensions.settings\gdaefkejpgkiemlaofpalmlakkmbjdnl - Set
HKEY_CURRENT_USER\Software\Google\Chrome\PreferenceMACs\Default\extensions.settings\gfdkimpbcpahaombhbimeihdjnejgicl - Set
HKEY_CURRENT_USER\Software\Google\Chrome\PreferenceMACs\Default\extensions.settings\kmendfapggjehodndflmmgagdbamhnfd - Set
HKEY_CURRENT_USER\Software\Google\Chrome\PreferenceMACs\Default\extensions.settings\mhjfbmdgcfjbbpaeojofohoefgiehjai - Set
HKEY_CURRENT_USER\Software\Google\Chrome\PreferenceMACs\Default\extensions.settings\neajdppkdcdipfabeoofebfddakdcjhd - Set
HKEY_CURRENT_USER\Software\Google\Chrome\PreferenceMACs\Default\extensions.settings\nkeimhogjdpnpccoofpliimaahmaaome
Mutexes
10Named locks a program uses so only one copy runs; malware families often reuse them.
Global\OneSettingQueryMutex+compat+encapsulationDBWinMutexLocal\__DDrawCheckExclMode__\Sessions\1\BaseNamedObjects\DBWinMutex\Sessions\1\BaseNamedObjects\Local\ChromeProcessSingletonStartup!\Sessions\1\BaseNamedObjects\{A946A6A9-917E-4949-B9BC-6BADA8C7FD63}
Show all 10 entries for mutexes
\Sessions\1\BaseNamedObjects\Global\SyncRootManager\Sessions\1\BaseNamedObjects\Global\C::Users:user:AppData:Local:Microsoft:Windows:Explorer:iconcache_idx.db!rwWriterMutex\Sessions\1\BaseNamedObjects\Global\C::Users:user:AppData:Local:Microsoft:Windows:Explorer:iconcache_16.db!dfMaintainer\Sessions\1\BaseNamedObjects\Global\C::Users:user:AppData:Local:Microsoft:Windows:Explorer:iconcache_32.db!dfMaintainer
Sandbox background — not the file
33The 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 LocalSystemNetworkRestricted -p -s NgcSvc - VM process
svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s NgcCtnrSvc - 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 process
wuapihost.exeC:\Windows\System32\wuapihost.exe
Show all 33 entries for sandbox background — not the file
- VM process
UI0Detect.exeC:\Windows\System32\UI0Detect.exe - VM injection target
\\?\C:\Windows\system32\wbem\WMIADAP.EXE - VM injection target
C:\Program Files\Google2508_891536696\bin\updater.exe - VM injection target
C:\Program Files\Google2108_767477765\bin\updater.exe - VM injection target
C:\Program Files\Google3932_1179686629\bin\updater.exe - VM injection target
C:\Program Files\Google2940_445839305\bin\updater.exe - VM injection target
C:\Program Files\Google2424_970027280\bin\updater.exe - VM injection target
C:\Program Files\Google3392_86872983\bin\updater.exe - VM host
query.prod.cms.rt.microsoft.com - VM host
www.microsoft.com - VM host
res.public.onecdn.static.microsoft - VM host
204.79.197.203 - VM host
239.255.255.250 - VM host
224.0.0.251 - VM host
a83f:8110:0:0:ffff:ffff:3001:0 - VM host
20.99.184.37 - VM host
23.216.147.64 - VM host
20.99.133.109 - VM host
a83f:8110:0:0:1400:1400:2800:3800 - VM host
192.229.211.108 - VM host
23.216.147.76 - VM host
13.107.4.50 - VM host
a83f:8110:0:0:629b:2800:0:0 - VM host
20.99.186.246 - VM host
20.99.185.48 - VM host
a83f:8110:e02:0:f801:2221:e02:0 - VM host
131.253.33.203
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.
- 24afbaad12f108178b96…44e4d4Not checkedno saved verdict
- 39072097c2f6a8adb0a9…11792cNot checkedno saved verdict
- 4315638c05cc931286f0…eec69cNot checkedno saved verdict
- d519ea893ab882081c8a…69fad2Not checkedno saved verdict
- a41acd98ebafb4d23bb4…dfb7a7Not checkedno saved verdict
- 53c1d2d7a3c322d33b93…bfe77bNot checkedno saved verdict
- b3373b3c382534c5873d…d28fd6Not checkedno saved verdict
- a70917254e24bb9aac97…6de3cdNot checkedno saved verdict
- fd22ca4d64a05cee7487…fdd731Not checkedno saved verdict
- 70d7f3835784447b4b27…f3a0e9Not checkedno saved verdict
Chapter 04
Technical details
None of the 71 antivirus engines that checked it flag it; no publisher signature.
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 17, 2026, 3:56 PM UTC
- SHA-256
c9eea9bc435b5f5d93f45cf5b378ca6b15bd6da696de81d5fbc38410268ee9ee- SHA-1
3e31b0def6aa615c370eb34789ea3e1f581746fc- MD5
a2c5f2c7b36132c763a8eadabd6a8088
About this file
FrostyFix.dll is a Win32 EXE file of 1.7 MB.
- Type and size
- Win32 EXE · 1.7 MB
- Signer
- UnsignedNo code signature.
- First seen
- Dec 16, 2022On VirusTotal.
- Submitted by
- 2,642 distinct sources
- Packer
- None detected
- Entropy
- 4.35 of 8
First scanned
Antivirus consensus
0 of 71 engines flagged this file
4 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-118 engines0flagged
- Tier-236 engines0flagged
- Low-trust17 engines0flagged
View all 75 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
- DeepInstinctClean
- 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
- TrapmineClean
- TrellixENSClean
- TrendMicroClean
- TrendMicro-HouseCallClean
- TrustlookNo result
- VaristClean
- VBA32Clean
- VIPREClean
- VirITClean
- ViRobotClean
- WebrootClean
- XcitiumClean
- YandexClean
- ZillyaClean
- ZoneAlarmClean
- ZonerClean
Signatures and behavior heuristics
Behavioral heuristics matched patterns associated with malware. Corroborating evidence determines how much weight they carry.
- dscgeneric
- Jupyter_infostealer
- INDICATOR_EXE_Packed_Fodygeneric
- pdb_YARAifygeneric
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 seen in the wild for a long time. High prior this is legitimate; isolated detections on common-old files are usually false positives.
Chapter 05
Questions & answers
Short answers to the 6 questions people ask most about this file.
Is FrostyFix.dll safe?
What is FrostyFix.dll?
How many antivirus engines detected FrostyFix.dll?
What is the SHA-256 hash of FrostyFix.dll?
Is it safe to run FrostyFix.dll?
How up to date is this analysis of FrostyFix.dll?
Community
Member reviews and reports for this exact file hash.