Is IAS.cmd safe?
No antivirus engine detected the widely submitted batch file, and completed runtime checks found no confirmed harmful child or disreputable network destination.
The file has accumulated 964 submissions from 895 sources, yet none of 75 antivirus engines detected it. One sandbox observed potentially sensitive service and defense-related techniques, but produced no malicious verdict; all six contacted hosts were fully checked without reputation hits, and no inspected child was confirmed harmful.
8e2c49038611df7ee2…99f140fa1deadbRecommended next actions
Before running
Run it only when it came from the developer's official site or another source you independently trust.
If you already ran it
Keep normal device protection enabled and stop if the file behaves unexpectedly.
Intelligence
The saved assessment, checked against the scan evidence and recorded coverage.
The reasoning behind this verdict
This section explains the evidence supporting the verdict and keeps conflicting or missing signals visible.
The file has accumulated 964 submissions from 895 sources, yet none of 75 antivirus engines detected it. One sandbox observed potentially sensitive service and defense-related techniques, but produced no malicious verdict; all six contacted hosts were fully checked without reputation hits, and no inspected child was confirmed harmful.
None of 75 antivirus engines flagged the batch file, including all 17 participating tier-1 engines. Its 964 submissions from 895 sources provide substantial exposure history rather than a newly encountered sample. One completed sandbox observed T1543.003 and T1562.001, so the script performs actions that deserve context-sensitive caution, but the sandbox issued no malicious assessment and recorded no persistence indicators. Reputation coverage included all six contacted domains, with no malicious or suspicious host matches. No malicious child or external-intelligence match was found, although the six child verdicts remain individually unknown.
What We Detected
None of 75 antivirus engines flagged IAS.cmd, and all 17 participating tier-1 engines reported no detection. The file has been submitted 964 times by 895 sources over 235 days, giving it broad exposure without an established malware family label. CIRCL, MalwareBazaar, and YARAify supplied no corroborating match.
Threat Behavior
One completed sandbox run recorded service-related technique T1543.003 and defense-impairment technique T1562.001, along with long-sleep and debugger-detection traits. These are meaningful risk indicators, but the run produced no malicious sandbox verdict, no persistence indicators, and no registry modifications. All six observed domains were covered by the host-reputation check, with no malicious or suspicious matches. Six child hashes were inspected and none was confirmed harmful, though their individual verdicts remain unknown.
What To Do Now
Use the script only if it came from an expected source and its purpose matches the system changes it requests. Keep endpoint protection enabled, inspect the batch commands before running with administrative rights, and execute it in a controlled environment if provenance is uncertain.
Where this verdict could be wrong3 caveats
- The completed sandbox recorded T1543.003 and T1562.001, techniques associated with service creation and impairing defenses.
- The sample carries the tags detect-debug-environment and long-sleeps, which can indicate sandbox-evasion behavior.
- All 6 inspected child files have unknown individual verdicts, so their absence from the malicious rollup is not affirmative confirmation that each child is benign.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- 0/75 antivirus engines detected the sample.
- All 17 participating tier-1 engines reported no detection.
- 964 submissions from 895 sources indicate broad historical exposure.
- All 6 contacted domains were checked with no malicious or suspicious reputation matches.
- No malicious sandbox verdict or confirmed malicious child was present.
- Sandbox observed T1543.003 service-related activity.
- Sandbox observed T1562.001 defense-impairment activity.
- File tags include long-sleeps and detect-debug-environment.
- Six dropped child files lack individual verdicts.
Proceed only when the script's source and intended system changes are understood. Keep security software enabled and review its commands before granting administrative privileges.
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
Complete6 contacted hosts were cross-checked.
YARA
CompleteRule evaluation completed with no recorded matches.
External intel
Complete3 of 3 independent reference sources completed.
Behavior
Plain-English impact first, then the observed runtime evidence.
Runtime flight recorder
Capture complete- 1isolated sandbox run
- 9MITRE ATT&CK techniques
- 15spawned processes
- 6network contacts
- 22filesystem & mutex artifacts
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.
- svc.ha-teams.office.com
- teams-mrc-ww-perf.tm-4.office.com
- assets.msn.com
- assets.msn.com-ion.edgesuite.net
- a1666.dscr.akamai.net
- nexusrules.officeapps.live.com
- \Device\ConDrv\Server
- \Device\ConDrv\\Reference
- \Device\ConDrv\\Input
- \Device\ConDrv\\Output
- C:\Users\<USER>\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
- C:\Users\user\AppData\Local\Temp\__PSScriptPolicyTest_g5trn544.k4c.psm1
- C:\Users\user\AppData\Local\Temp\__PSScriptPolicyTest_sevaeifh.syv.ps1
- Local\SessionImmersiveColorMutex
- \BaseNamedObjects\Local\SM0:6132:304:WilStaging_02
- \BaseNamedObjects\Local\SM0:6132:120:WilError_03
- \BaseNamedObjects\Local\ZonesCacheCounterMutex
- \BaseNamedObjects\Local\ZonesLockedCacheCounterMutex
Files this sample writes at runtime
This file drops 6 children at runtime. None are currently flagged malicious in our cache.
- 96ad1146eb96877eab59…87dcf7Never scannednever seen before
- d7aaadd59b0af06ce1fb…1a489aNever scannednever seen before
- a7de5177c68a64bd48b3…5f65cfNever scannednever seen before
- 8f5be9ea3a10baa5bcee…9723e1Never scannednever seen before
- 0ed34f13edafd1037444…6d5930Never scannednever seen before
- dd10de4b42fb1cae2e81…782e47Never scannednever seen before
Detection & Forensics
Consensus, attribution, signatures, code structure, prevalence, and identity.
Evidence integrity
Chain of custody for the facts preserved in this report.
- 0rule hits recorded
- 0 / 75engines flagged
- 895sources in submission history
Why these facts are shown
Each statement identifies whether it was directly recorded or derived from saved scan facts.
- 01
0 of 75 antivirus engines flagged the file.
Verdict inputView chapterProvenanceObservedSourceAntivirus analysisObserved at - 02
The hash has a long, established submission history across 895 sources.
Verdict inputView chapterProvenanceDerivedSourceSubmission historyObserved at - 03
The hash has been submitted 964 times from 895 sources.
ProvenanceDerivedSourceSaved report factsObserved at - 04
Scanned file: IAS.cmd — 8e2c49038611df7ee2f9b2dafe433b18e4f337691cbaec574d99f140fa1deadb
ProvenanceObservedSourceUploaded fileObserved at - 05
Observed process — fltmc
ProvenanceObservedSourceIsolated runtime analysisObserved at - 06
Observed process — conhost.exe powershell.exe "$t=[AppDomain]::CurrentDomain.DefineDynamicAssembly(4, 1).DefineDynamicModule(2, $False).DefineType(0); $t.DefinePInvokeMethod('GetStdHandle', 'kernel32.dll', 22, 1, [IntPtr], @([Int32]), 1, 3).SetImplementationFlags(128); $t.DefinePInvokeMethod('SetConsoleMode', 'kernel32.dll', 22, 1, [Boolean], @([IntPtr], [Int32]), 1, 3).SetImplementationFlags(128); $k=$t.CreateType(); $b=$k::SetConsoleMode($k::GetStdHandle(-10), 0x0080); & cmd.exe '/c' '"""C:\Users\<USER>\Desktop\install.bat""" -el r1 -qedit'"
ProvenanceObservedSourceIsolated runtime analysisObserved at - 07
File written: Server — \Device\ConDrv\Server
ProvenanceObservedSourceIsolated runtime analysisObserved at - 08
File written: Reference — \Device\ConDrv\\Reference
ProvenanceObservedSourceIsolated runtime analysisObserved at - 09
Contacted host: svc.ha-teams.office.com — Contact observed during runtime.
ProvenanceObservedSourceIsolated runtime analysisObserved at - 10
Contacted host: teams-mrc-ww-perf.tm-4.office.com — Contact observed during runtime.
ProvenanceObservedSourceIsolated runtime analysisObserved at
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.
YARA rules
No matchesThe rule pass completed without a saved public match.
0 of 75 engines flagged this file
View all 75 engine results
PE structure
Not applicablePE structure analysis applies to Windows executable formats, not this file type.
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.
Fingerprint and provenance
- File name
- IAS.cmd
- Format
- DOS batch file
- Code signing
- Not applicable to this file type
- Size
- 30.4 KB
- Last analyzed
- Oct 1, 2026, 5:48 AM UTC
8e2c49038611df7ee2f9b2dafe433b18e4f337691cbaec574d99f140fa1deadbSafety & FAQ
Complete recovery guidance and answers for the next decision.
What to do now
This file appears low risk based on the evidence available now.
- Recovery step 01
Run it only when it came from the developer's official site or another source you independently trust.
- Recovery step 02
A clean result reduces known risk, but it cannot guarantee that every new or targeted threat has been detected.
- Recovery step 03
Keep your antivirus and Windows updates switched on so you stay protected.
Safety FAQ
Direct answers grounded in the saved verdict and evidence in this report.
Is IAS.cmd safe?
What is IAS.cmd?
How many antivirus engines detected IAS.cmd?
What is the SHA-256 hash of IAS.cmd?
Is it safe to run IAS.cmd?
How up to date is this analysis of IAS.cmd?
Community
Member reviews and reports for this exact file hash.