Is install.exe safe?
Only 2 of 74 engines flagged this signed installer, but possible process injection and absent signer history leave enough uncertainty to warrant caution.
The file is validly signed by Panda Office Limited, and all 17 tier-1 engines were silent while only 2 of 74 engines raised generic detections. One sandbox did not produce a malicious verdict, but its mapping to possible process injection and archiving, combined with the signer’s missing history, means execution should be limited to a verified official source.
961df2558354e3f8e9…62bb49b8a67518Recommended next actions
Before installing
Do not install it until the source and publisher can be verified independently.
If you already installed it
Stop using it, scan the device, and watch for unexpected behavior or security alerts. Download a fresh installer from the developer's official site or an official app store.
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 is validly signed by Panda Office Limited, and all 17 tier-1 engines were silent while only 2 of 74 engines raised generic detections. One sandbox did not produce a malicious verdict, but its mapping to possible process injection and archiving, combined with the signer’s missing history, means execution should be limited to a verified official source.
Two of 74 engines raised generic detections, while all 17 tier-1 engines reported no detection and no malware family consensus formed. The executable carries a verified Panda Office Limited signature, with no detected brand conflict, but there is no historical signer record to establish a dependable track record. One completed sandbox run did not return a malicious verdict, although it mapped activity to T1055 and T1560. The five contacted domains received complete cache coverage without a malicious or suspicious match, and none of the 10 inspected children was identified as malicious, though each child’s individual verdict remains unknown. The balance favors a likely false alarm, but the offensive runtime mappings prevent a stronger benign conclusion.
What We Detected
Only 2 of 74 engines flagged the executable: CrowdStrike used a grayware-confidence label and DeepInstinct supplied a generic malicious label. No tier-1 engine detected it, and there was no agreement on a named malware family. The file is validly signed by Panda Office Limited, with no detected mismatch between the claimed product and signer, but no established signer history is available.
Threat Behavior
One completed sandbox run did not issue a malicious verdict. It nevertheless mapped activity to T1055, possible process injection, and T1560, data archiving; these are meaningful caution signals but do not establish malicious intent by themselves. The observed installer also downloaded a recovery application, wrote program files, and contacted five domains. All five contacted domains were checked against the available host cache without a malicious or suspicious match. Ten dropped children were inspected without a malicious child finding, although their individual verdicts remain unknown.
What To Do Now
Use this installer only if its hash and Panda Office Limited signature match a release obtained directly from the vendor’s official channel. Keep endpoint protection enabled, and avoid execution if the source, expected product, or signature cannot be independently verified.
Where this verdict could be wrong5 caveats
- T1055 indicates possible process injection and T1560 indicates data archiving, both of which warrant caution despite the non-malicious sandbox verdict.
- CrowdStrike and DeepInstinct flagged the sample, although neither supplied a corroborated malware family and no tier-1 engine agreed.
- signing.signerStats.found=false, so the valid 'Panda Office Limited' certificate is not supported by established historical sample data.
- All 10 dropped children have unknown individual verdicts, so hasMaliciousChild=false does not establish that those files are benign.
- YARAify timed out, leaving one researcher-rule source without coverage.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- All 17 tier-1 engines reported no detection.
- The Panda Office Limited signature is verified.
- No brand mismatch was detected.
- The completed sandbox run did not return a malicious verdict.
- Five contacted domains had no cached malicious or suspicious matches.
- CrowdStrike and DeepInstinct flagged the file, accounting for 2 of 74 engine results.
- Runtime mapping includes possible process injection under T1055.
- Runtime mapping includes data archiving under T1560.
- No historical reputation is available for signer Panda Office Limited.
- The 10 dropped children have unknown individual verdicts.
- YARAify rule coverage was unavailable because the lookup timed out.
Download or run this installer only after confirming the Panda Office Limited signature and SHA-256 hash through the vendor’s official release channel. Keep endpoint protection enabled and quarantine the file if its source cannot be verified.
Coverage & freshness
Complete means the check returned a usable result. It does not mean the file is safe.
Antivirus
Complete2 of 74 engines flagged the file.
Sandbox
Complete1 isolated runtime environment contributed observations.
Network
Partial5 of 10 contacted hosts were cross-checked; coverage is incomplete.
YARA
Complete1 signature or behavior rule matched.
External intel
PartialIndependent reference checks were attempted but are incomplete.
Behavior
Plain-English impact first, then the observed runtime evidence.
Runtime flight recorder
Capture complete- 1isolated sandbox run
- 9MITRE ATT&CK techniques
- 3spawned processes
- 13network contacts
- 20filesystem & mutex artifacts
What this file does
Observed actions and their security significance
High concern: Injected code into another process, a technique that can conceal execution.
Moderate concern: Contained obfuscated or packed code that makes inspection harder.
Moderate concern: Communicated over a common application protocol; malware can use this for command-and-control.
Moderate concern: Checked the environment for virtualisation or analysis tools.
Note: Listed running processes; both legitimate software and malware may do this.
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.
Attack story
Runtime observations grouped by analysis stage. Arrows organize the stages; they do not claim chronology or causality.
Input file
The submitted object
- FileObserved
install.exe
961df2558354e3f8e99679090c9fb7f5e56b5e5afa8cff913862bb49b8a67518
01Uploaded file
Processes
Runtime execution
- ProcessObserved
Observed process
C:\Program Files (x86)\Drecov\DrecovInstallPack.exe /d /s -o C:\Program Files (x86)\Drecov -h 328038 -ch Official -lang 3
02Isolated runtime analysis - ProcessObserved
Observed process
C:\Program Files (x86)\Drecov\Drecov.exe -topMost
03Isolated runtime analysis - +1 more recorded observation in Analyst mode
Files
Created or changed
- Written fileObserved
QtDrecov_for_Win.2.1.0.1[1].exe
C:\Users\<USER>\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\9C6Q2GAH\QtDrecov_for_Win.2.1.0.1[1].exe
04Isolated runtime analysis - Written fileObserved
DrecovInstallPack.exe
C:\Program Files (x86)\Drecov\DrecovInstallPack.exe
05Isolated runtime analysis - +1 more recorded observation in Analyst mode
Network
Hosts contacted
- Contacted hostObserved
api.pandaoffice.com
Contact observed during runtime.
06Isolated runtime analysis - Contacted hostObserved
download.pandaoffice.com
Contact observed during runtime.
07Isolated runtime analysis - +1 more recorded observation in Analyst mode
7 recorded facts from one runtime window. Every fact remains independently traceable in Analyst mode.
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.
- api.pandaoffice.com
- download.pandaoffice.com
- c.pki.goog
- pki-goog.l.google.com
- assets.msn.com
- 8.8.8.8
- 104.21.39.164
- 172.67.146.195
- 192.178.155.94
- 199.232.210.172
- https://download.pandaoffice.com/recovery/2.1.0.1/QtDrecov_for_Win.2.1.0.1.exe
- http://c.pki.goog/r/gsr1.crl
- http://c.pki.goog/r/r4.crl
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix
- Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable
- Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings
- {118F2F14-6F39-4AB3-80FF-7743C0BCD203}\WpadDecisionReason
- {118F2F14-6F39-4AB3-80FF-7743C0BCD203}\WpadDecisionTime
- C:\Users\<USER>\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\9C6Q2GAH\QtDrecov_for_Win.2.1.0.1[1].exe
- C:\Program Files (x86)\Drecov\DrecovInstallPack.exe
- C:\Program Files (x86)\Drecov\data.zt
- C:\Program Files (x86)\Drecov\File2Png\File2Png.exe.config
- C:\Program Files (x86)\Drecov\File2Png\File2PngPrev.exe.config
- C:\Users\<USER>\AppData\Local\Temp\PandaIns.log
- C:\Program Files (x86)\Drecov\DrecovInstallPack.exe
- Drecov_InsClass
- \Sessions\1\BaseNamedObjects\DBWinMutex
- \Sessions\1\BaseNamedObjects\Drecov_InsClass
Files this sample writes at runtime
This file drops 10 children at runtime. None are currently flagged malicious in our cache.
- 7ca5ceb476e76987b345…7fa049Never scannednever seen before
- 762b5ed0ad785ae5fef6…8b425dNever scannednever seen before
- 966efd423001041de528…4a59caNever scannednever seen before
- e07a8f231181e09ca89d…dcc42cNever scannednever seen before
- c95b1a14dcc4912ded5e…9b18f3Never scannednever seen before
- e2b3ce11cf9c6cc8c471…bee465Never scannednever seen before
- 9bc6db7ac14e7e70e1d3…5ae267Never scannednever seen before
- d13b36e3fb33725c828d…9acb9dNever scannednever seen before
- 808f6edd6d89d5e1888d…b2f605Never scannednever seen before
- 7493645f991df9d9b346…bd7870Never 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.
- 1rule hit recorded
- 2 / 74engines flagged
- 8sources in submission history
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.
Verdict inputView chapterProvenanceDerivedSourceSignature and behavior rulesObserved at - 02
2 of 74 antivirus engines flagged the file, including CrowdStrike and DeepInstinct.
Verdict inputView chapterProvenanceObservedSourceAntivirus analysisObserved at - 03
The file has a valid code signature from Panda Office Limited.
ProvenanceObservedSourceCode-signing metadataObserved at - 04
Scanned file: install.exe — 961df2558354e3f8e99679090c9fb7f5e56b5e5afa8cff913862bb49b8a67518
ProvenanceObservedSourceUploaded fileObserved at - 05
Observed process — C:\Program Files (x86)\Drecov\DrecovInstallPack.exe /d /s -o C:\Program Files (x86)\Drecov -h 328038 -ch Official -lang 3
ProvenanceObservedSourceIsolated runtime analysisObserved at - 06
Observed process — C:\Program Files (x86)\Drecov\Drecov.exe -topMost
ProvenanceObservedSourceIsolated runtime analysisObserved at - 07
File written: QtDrecov_for_Win.2.1.0.1[1].exe — C:\Users\<USER>\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\9C6Q2GAH\QtDrecov_for_Win.2.1.0.1[1].exe
ProvenanceObservedSourceIsolated runtime analysisObserved at - 08
File written: DrecovInstallPack.exe — C:\Program Files (x86)\Drecov\DrecovInstallPack.exe
ProvenanceObservedSourceIsolated runtime analysisObserved at - 09
Contacted host: api.pandaoffice.com — Contact observed during runtime.
ProvenanceObservedSourceIsolated runtime analysisObserved at - 10
Contacted host: download.pandaoffice.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.
Available reference checks returned no match, but at least one source was unavailable. This is not a clean result.
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.
The saved runtime evidence maps this activity to MITRE T1055 (Process Injection). The mapping supports possible process injection, but it does not prove the exact injection method or the operator's intent.
EvidenceC:\Program Files (x86)\Drecov\DrecovInstallPack.exe /d /s -o C:\Program Files (x86)\Drecov -h 328038 -ch Official -lang 3
2 of 74 engines flagged this file
View all 74 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
Moderate prevalence — neither rare nor common. No strong prior applies.
Fingerprint and provenance
- File name
- install.exe
- Format
- Win32 EXE
- Code signing
- Signature valid: Panda Office Limited
- Size
- 3.7 MB
- Last analyzed
- Sep 28, 2026, 3:09 AM UTC
961df2558354e3f8e99679090c9fb7f5e56b5e5afa8cff913862bb49b8a67518Safety & 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.
- Recovery step 01
Don't install it unless you're certain it came from a source you trust.
- Recovery step 02
Check where you got it — an unexpected attachment or a random download link is a red flag.
- Recovery step 03
If its origin cannot be confirmed, delete this file and use a fresh copy from a trusted source. Download a fresh installer from the developer's official site or an official app store.
- Recovery step 04
If you're still unsure, scan it again in a day or two — detections often catch up on newer files.
Safety FAQ
Direct answers grounded in the saved verdict and evidence in this report.
Is install.exe safe, or is it malware?
What is install.exe?
How many antivirus engines detected install.exe?
What should I do if I already installed install.exe?
How do I remove install.exe?
Is install.exe digitally signed?
What is the SHA-256 hash of install.exe?
How up to date is this analysis of install.exe?
Community
Member reviews and reports for this exact file hash.