File scan report
Verdict Malicious
Is calculator. exe safe? No, we rate this exact file malicious.
19 of the 68 antivirus engines that checked it detect this unsigned executable, and 17 independent products still flag it once shared scan engines are merged, including Microsoft, Sophos and Trellix.
Strong evidence · Two or more major antivirus engines agree.
Do not run this file and let your security software remove it; if it has already been executed, run a full scan and change passwords for accounts used on that machine. Keep real-time protection enabled throughout.
What to do now4 steps
This file is harmful. Don't run it, and remove it.
If you haven't run it
Don't run this file. Delete it, then empty the Recycle Bin.
If you already ran it
Disconnect the device from the internet, then run a full antivirus scan. Microsoft Defender Offline (Windows Security > Virus & threat protection > Scan options) also finds malware that hides while Windows runs.
If you typed passwords on the device after running it, change them from another device you trust.
If the scan keeps finding it, or the device still acts strangely, scan again with a second-opinion scanner from another company; if that doesn't fix it, back up your personal files and reinstall Windows.
If you already ran it, do these in order.
If you opened or installed it
Avoid banking and sign-ins on that device until it is clean. These free MalwareTips guides walk you through it.
- Trojan removal guideClear steps for Windows, Mac and Android. (opens malwaretips.com in a new tab)
- Remove malware from WindowsStep-by-step cleanup with free tools. (opens malwaretips.com in a new tab)
- Ask for free help on the MalwareTips forumWindows malware removal help, answered by volunteers. (opens malwaretips.com in a new tab)
Paste this report's link in your topic so helpers can see what was found.
Antivirus results
19 of 68 flagged
- Flagged 19
- No detection 49
- No result 7
- Code signing Unsigned
- Test run Completed
- First seen 1d ago
Chapter 02
Why we think so
7 points against it and 3 in its favour, checked against the scan evidence.
The reasoning behind this verdict
It was first seen on Nov 10, 2026 with a single submitter, and the antivirus analysis tags it as self-deleting and obfuscated. In the sandbox it launched a shell to run a temporary batch file pointing back at itself, the classic self-removal step, while opening the calculator as a decoy.
This is an unsigned 89 KB Windows executable with no publisher history at all, first seen on Nov 10, 2026 and submitted by one source. That alone would not decide anything, but 19 of the 68 antivirus engines that checked it flag it, and after merging vendors that share one scan engine, 17 independent products still detect it — including three of the more reliable ones, Microsoft, Sophos and Trellix. The labels vary (generic machine-learning buckets such as Wacatac and GenericRXWV), so no single family is agreed on, but the sheer breadth of agreement on a file nobody has distributed is hard to explain as a false positive. The antivirus analysis also describes it as self-deleting and obfuscated, and our own static inspection found no commercial packer, so the obfuscation is not simply a protector. When it ran it had a command shell execute a temporary batch file that refers back to the sample's own path, which is the usual way a payload removes itself, and it opened the calculator application as cover. No network traffic, persistence or injected process was recorded, and the cross-check of contacted hosts was not available, so the evidence from the test run is incomplete rather than clean.
What We Detected
This is a small, unsigned Windows executable, first seen on Nov 10, 2026 and submitted by a single source. 19 of the 68 antivirus engines that checked it flag it; after merging vendors that share one scan engine, 17 independent products still detect it, including three of the highest-reputation ones: Microsoft (Trojan:Win32/Wacatac.B!ml), Sophos (Generic ML unwanted program) and TrellixENS (GenericRXWV-GT). One engine names it as a LaZagne-style credential-dumping tool, another places it loosely in the Nitol family, and the rest use generic trojan or machine-learning labels. The file itself carries the antivirus analysis tags "self-delete" and "obfuscated", yet it is neither packed nor high-entropy, so it is not simply a protected commercial build. It is also extremely rare — one submitter, no distribution history, and no publisher signature to vouch for it.
Threat Behavior
Under observation the sample started, spawned a command shell that executed a batch file from a temporary folder referring back to the sample's own path, and opened the calculator application — a self-cleanup step paired with a decoy, which is a pattern droppers use to remove their own installer from the desktop while appearing to do something harmless. Our own static inspection of the bytes surfaced ordinary Windows capabilities — process and file discovery, command execution, file permissions — and no dropper, script, macro or document exploit logic, which is why the runtime and engine evidence carries the decision here rather than a static finding. A cross-check of any contacted hosts was not available, so we cannot describe the network side as verified either way.
What To Do Now
Do not run this file, even out of curiosity: a program named as a calculator that opens the real calculator itself while executing a temporary batch file is a lure, not a utility. Delete it from your downloads and desktop, empty the recycle bin, and let your security software remove it if it has already been quarantined. If you did execute it, run a full scan, check for anything that started automatically, and change passwords for accounts you use on that machine — particularly browser and email accounts — since one detection names a credential-stealing tool. Keep real-time protection switched on while you do this.
Where this verdict could be wrong3 caveats
- The three highest-reputation detections use generic machine-learning buckets rather than one shared family, so the exact threat type and family remain uncertain even though the file is clearly flagged.
- No remote control traffic, persistence entry or injected process was recorded in the sandbox runs, and the cross-check of any contacted hosts did not complete, so the runtime picture is incomplete rather than proven harmless or proven active.
- Only one engine names a credential-dumping tool; every other detection is a generic trojan or reputation label, so the stealer characterisation rests on a single source.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- No outbound network contact, persistence entry or injected process was observed during the sandbox runs.
- Our own static inspection found ordinary Windows capabilities and no dropper, script, macro or document-exploit logic.
- No reference database or community malware rule lists this file, and there is no recorded malicious dropped file.
- 19 of the 68 antivirus engines that checked it detect it, and 17 independent products still do after accounting for vendors that share one scan engine, including three high-reputation vendors.
- Unsigned with no publisher history and no distribution record — one submitter, first seen on Nov 10, 2026.
- The antivirus analysis describes it as self-deleting and obfuscated, and it is not a protected or packed commercial build.
- When run, it used a command shell to execute a temporary batch file that refers back to its own path — the usual self-removal step for a dropper.
- One engine labels it as a LaZagne-style credential-dumping tool, and that label matches a high-confidence behaviour pattern.
- It opened the calculator application while working, which is decoy behaviour rather than a sign the file really is a calculator.
7 sources checked · 6 complete · 1 not needed or not applicable. See every source
Chapter 03
What it did in our test
It ran in 2 isolated tests; no test environment rated what it did as risky.
Test run summary
Capture complete- 2isolated sandbox runs
- 22sandbox rule tags
- 4spawned processes
- 0network contacts
- 6filesystem & mutex artifacts
What the test run showed
What the file did on a test computer
Confirmed in the test run
Moderate concern: Contains packed or scrambled code that is harder to inspect (common in installers too).
Moderate concern: Ran commands or a script on the test computer.
Moderate concern: Hid files or windows on the test computer.
Note: Read the user name of the test computer.
Note: Deleted files or logs during the test run (installers often clean up after themselves).
Note: Read basic details of the test computer, such as its Windows version.
Note: Looked through folders on the test computer (most installers do this).
Sandbox labels we could not confirm (common in safe files too)
Not confirmed: A sandbox rule tagged this run as code injection, but no injected program was recorded.
Not confirmed: A sandbox rule tagged this run as contacting a server, but no contacted host was recorded.
Not confirmed: A sandbox rule tagged this run as changing how Windows loads code; nothing confirms it.
This file was run on a test computer (a sandbox), not on yours. Labels we could not confirm are listed so you can see them, but they are not treated as evidence against the file.
Threat context
How trojans work
A trojan pretends to be something useful or harmless so that you run it. Once open, it does its real job in the background, from stealing data to opening a back door or downloading more malware.
Bottom line:The disguise is the whole trick, so a trustworthy-looking name or icon means nothing.
Recorded behavior
What happened in the test
Grouped by step. The order is not a timeline.
- 1
Input file
The submitted object
- Evidence 1 of 5: FileSeen in the test run
calculator.exe
3cc0ec27ce9b82a6eee8d300e59da18a97805e3bc22ce2d91503d0a14032fd6b
Uploaded file
- 2
Processes
What ran
- Evidence 2 of 5: ProcessSeen in the test run
calculator.exe
"C:\Users\<USER>\Desktop\calculator.exe"
Test run - Evidence 3 of 5: ProcessSeen in the test run
cmd.exe
"C:\Windows\sysnative\cmd.exe" /c "C:\Users\<USER>\AppData\Local\Temp\4E79.tmp\4EB8.tmp\4ED8.bat C:\Users\<USER>\Desktop\calculator.exe"
Test run - +1 more recorded observation
- 2
Files
Created or changed
- Evidence 4 of 5: Written fileSeen in the test run
4ED8.bat
C:\Users\<USER>\AppData\Local\Temp\4E79.tmp\4EB8.tmp\4ED8.bat
Test run - Evidence 5 of 5: Written fileSeen in the test run
Download-1.tmp
C:\Windows\ServiceProfiles\LocalService\AppData\Local\FontCache\Fonts\Download-1.tmp
Test run - +1 more recorded observation
5 facts from the test run. See the full activity list.
What this file did when executed
This file was detonated in 2 sandboxes and its runtime behaviour was observed.
Techniques observed in the sandbox
22MITRE ATT&CK techniques the sandbox mapped. Highlighted ones are rare in normal software; the others are common in legitimate programs too.
- T1010
- T1027· Obfuscated code
- T1027.002· Obfuscated code
- T1033· Reads user info
- T1036
- T1055· Process injection
- T1059· Runs commands
- T1069
- T1070· Covers its tracks
- T1071· Application protocol
- T1082· System recon
- T1083· Scans your files
- T1129· Loads modules
- T1202
- T1222
- T1485
- T1539
- T1553
- T1553.002
- T1564· Hides artifacts
- T1564.003· Hides artifacts
- T1574· Execution hijack
Observed activity
Processes started
4Programs the file ran, with their command lines.
calculator.exe"C:\Users\<USER>\Desktop\calculator.exe"cmd.exe"C:\Windows\sysnative\cmd.exe" /c "C:\Users\<USER>\AppData\Local\Temp\4E79.tmp\4EB8.tmp\4ED8.bat C:\Users\<USER>\Desktop\calculator.exe"calcApplicationFrameHost.exeC:\Windows\system32\ApplicationFrameHost.exe -Embedding
Files
5Files the file created, changed or deleted.
- Written
C:\Users\<USER>\AppData\Local\Temp\4E79.tmp\4EB8.tmp\4ED8.bat - Written
C:\Windows\ServiceProfiles\LocalService\AppData\Local\FontCache\Fonts\Download-1.tmp - Deleted
C:\Users\<USER>\AppData\Local\Temp\4E79.tmp\4EB8.tmp\extd.exe - Deleted
C:\Users\<USER>\AppData\Local\Temp\4E79.tmp\4EB8.tmp\4ED8.bat - Deleted
C:\Users\<USER>\AppData\Local\Temp\4E79.tmp\4EB8.tmp\
Registry and auto-start
7Settings the file changed, including ways to start again after a restart.
- Set
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\SlowContextMenuEntries - 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
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\ApplicationAssociationToasts\AppXp8e2ntvbtget7f2fw6qec3j54vhd14m4_ms-calculator - Set
HKEY_CURRENT_USER\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\SystemAppData\Microsoft.WindowsCalculator_8wekyb3d8bbwe\PersistedTitleBarData\Microsoft.WindowsCalculator_8wekyb3d8bbwe!App\AppVersion - Set
HKEY_CURRENT_USER\Software\Classes\Local Settings\MrtCache\C:%5CProgram Files%5CWindowsApps%5CMicrosoft.WindowsCalculator_11.2508.4.0_x64__8wekyb3d8bbwe%5Cmicrosoft.system.package.metadata%5CS-1-5-21-4005801669-2598574594-602355426-1001-MergedResources-10.pri\1dce37ed3781106\fae8ab0e\@{Microsoft.WindowsCalculator_11.2508.4.0_x64__8wekyb3d8bbwe?ms-resource://Microsoft.WindowsCalculator/Files/Assets/CalculatorSplashScreen.png}
Show all 7 entries for registry and auto-start
- Deleted
HKEY_CURRENT_USER\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\SystemAppData\Microsoft.WindowsCalculator_8wekyb3d8bbwe\PersistedTitleBarData\Microsoft.WindowsCalculator_8wekyb3d8bbwe!App\ExtendViewIntoTitleBar
Mutexes
1Named locks a program uses so only one copy runs; malware families often reuse them.
Local\SessionImmersiveColorMutex
Sandbox background — not the file
7The analysis machine's own processes and connections, recorded in every run.
- VM process
services.exeC:\Windows\system32\services.exe - VM process
DllHost.exeC:\Windows\system32\DllHost.exe /Processid:{AB8902B4-09CA-4BB6-B78D-A8F59079A8D5} - VM process
svchost.exeC:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s WdiSystemHost - 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 LocalService -s W32Time
Show all 7 entries for sandbox background — not the file
- VM process
lsass.exeC:\Windows\system32\lsass.exe
Files this sample writes at runtime
This file drops 1 child at runtime. None are currently flagged malicious in our cache. 1 has no saved verdict and was not checked; that is missing coverage, not a finding.
- 3dec4344e8af8d037430…f1a09aNot checkedno saved verdict
Chapter 04
Technical details
19 of the 68 antivirus engines that checked it flag it; no publisher signature.
No risky structure found
We opened the uploaded Windows program in an isolated sandbox and read its structure without running it.
What the code can do, found by Mandiant capa rules, not behaviour that was seen.
- accept command line argumentsT1059 · Runs commands
- check OS versionT1082 · System recon
- enumerate gui resourcesT1010
- get common file pathT1083 · Scans your files
- get system information on WindowsT1082 · System recon
- link function at runtime on WindowsT1129 · Loads modules
- set file attributesT1222
- allocate thread local storage
- compress data via ZLIB inflate or deflate
- compute adler32 checksum
Checked on Nov 10, 2026 while the file was uploaded. MalwareTips deleted its copy afterwards; VirusTotal keeps the uploaded file.
Sources checked
Every check behind this verdict
7 sources checked · 6 complete · 1 not needed or not applicable. Complete means the check returned a usable result; it does not mean the file is safe.
Engines that flagged it 19
- Microsoft (major engine)Trojan:Win32/Wacatac.B!ml
- Sophos (major engine)Generic ML PUA (PUA)
- TrellixENS (major engine)GenericRXWV-GT!98C6C7796859
- CAT-QuickHealTrojan.GenericPMF.S17672681
- CrowdStrikewin/malicious_confidence_60% (D)
- CylanceUnsafe
- CynetMalicious (score: 100)
- DeepInstinctMALICIOUS
File fingerprint
- Last analyzed
- Nov 10, 2026, 1:03 AM UTC
- SHA-256
3cc0ec27ce9b82a6eee8d300e59da18a97805e3bc22ce2d91503d0a14032fd6b- SHA-1
a980029982f12370505f570589234874fa09acb8- MD5
98c6c779685955021aa73905ba0c81c3
About this file
calculator.exe is a Win32 EXE file of 89.1 kB.
- Type and size
- Win32 EXE · 89.1 kB
- Signer
- UnsignedNo code signature.
- First seen
- Nov 10, 2026On VirusTotal.
- Submitted by
- 1 sourceRarely seen: few people have submitted this exact file.
- Packer
- None detected
- Entropy
- 6.38 of 8
First scanned
Antivirus consensus
19 of 68 engines flagged this file
7 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.
The 19 detections come from 17 independent scan engines: several vendors license the same engine, so their results are one vote.
- Tier-118 engines3flagged
- Tier-235 engines12flagged
- Low-trust15 engines4flagged
View all 75 engine results
- CAT-QuickHealMalicious: Trojan.GenericPMF.S17672681
- CrowdStrikeMalicious: win/malicious_confidence_60% (D)
- CylanceMalicious: Unsafe
- CynetMalicious: Malicious (score: 100)
- DeepInstinctMalicious: MALICIOUS
- ElasticMalicious: malicious (high confidence)
- JiangminMalicious: Riskware.PEEPOCheck.ai
- MalwarebytesMalicious: Malware.AI.392946571
- McAfeeDMalicious: ti!3CC0EC27CE9B
- MicrosoftMalicious: Trojan:Win32/Wacatac.B!ml
- SangforMalicious: Trojan.Win32.Save.a
- SentinelOneMalicious: Static AI - Malicious PE
- SkyhighMalicious: BehavesLike.Win32.Infected.mh
- SophosMalicious: Generic ML PUA (PUA)
- TrellixENSMalicious: GenericRXWV-GT!98C6C7796859
- VaristMalicious: W32/Nitol.AS.gen!Eldorado
- VirITMalicious: Trojan.Win32.Genus.IHW
- ZillyaMalicious: Tool.Lazagne.Win32.102
- ZonerMalicious: Trojan.Win32.85523
- AcronisClean
- AhnLab-V3Clean
- AlibabaClean
- alibabacloudClean
- ALYacClean
- Antiy-AVLClean
- APEXClean
- ArcabitClean
- AvastClean
- Avast-MobileNo result
- AVGClean
- AviraClean
- BitDefenderClean
- BitDefenderFalxNo result
- BkavNo result
- ClamAVClean
- CMCClean
- CTXClean
- DrWebClean
- EmsisoftClean
- ESET-NOD32Clean
- F-SecureClean
- FortinetClean
- GDataClean
- GoogleNo result
- GridinsoftClean
- huorongClean
- IkarusClean
- K7AntiVirusClean
- K7GWClean
- KasperskyClean
- KingsoftClean
- LionicClean
- MaxSecureNo result
- MicroWorld-eScanClean
- NANO-AntivirusClean
- PaloaltoClean
- PandaClean
- RisingClean
- SUPERAntiSpywareClean
- SymantecClean
- SymantecMobileInsightNo result
- TACHYONClean
- tehtrisClean
- TencentClean
- TrapmineClean
- TrendMicroClean
- TrendMicro-HouseCallClean
- TrustlookNo result
- VBA32Clean
- VIPREClean
- ViRobotClean
- WebrootClean
- XcitiumClean
- YandexClean
- ZoneAlarmClean
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.
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)An antivirus engine labelled this sample as a credential-dumping tool (Mimikatz, pwdump or LaZagne style).
EvidenceZillya: Tool.Lazagne.Win32.102
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
Barely seen in the wild and first surfaced recently. 19 antivirus detections make that low prevalence materially relevant, but rarity alone is not proof of malware.
Chapter 05
Questions & answers
Short answers to the 8 questions people ask most about this file.
Is calculator.exe malware?
What is calculator.exe?
How many antivirus engines detected calculator.exe?
I already downloaded and ran calculator.exe — what should I do?
How do I remove calculator.exe?
What kind of malware is calculator.exe?
What is the SHA-256 hash of calculator.exe?
How up to date is this analysis of calculator.exe?
Community
Member reviews and reports for this exact file hash.