Is BPFA.exe safe?
Unsigned packed PE with 11 tier-1 detections and process-injection behaviour.
51 of 74 engines flag the file, 11 of them tier-1. Sandbox shows process injection, persistence, and direct-IP network activity. Similar imphash samples were previously marked malicious.
4f5aa071b2a076aa3c…b3b45960f59e82Recommended next actions
Before running
Do not run it. Delete this file from the device, then empty the Recycle Bin or Trash.
If you already ran it
Disconnect from the internet, start a full or offline antivirus scan, then secure important accounts from a clean device.
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.
51 of 74 engines flag the file, 11 of them tier-1. Sandbox shows process injection, persistence, and direct-IP network activity. Similar imphash samples were previously marked malicious.
The combination of 11 tier-1 malicious detections, confirmed offensive MITRE techniques, and an unsigned packed binary outweighs the lack of a strong family consensus. Similar imphash matches have already been classified malicious under the same reason code. The incomplete host-reputation check is neutral and does not offset the other signals.
What We Detected
74 engines scanned the sample; 51 returned malicious detections, 11 of them tier-1. Multiple engines label variants of MalwareX, Diztakun, MSILZilla, and Kepavll. The PE is unsigned, contains a high-entropy code section, and is flagged likely packed.
Threat Behavior
Sandbox execution recorded MITRE techniques T1055 (process injection), T1547.001 (registry run key), and T1562.001 (disable security tools). The sample wrote six dropped files, created mutexes, and contacted eight external IP addresses without domain names. No malicious child files were identified among the six inspected drops.
What To Do Now
Do not execute the file. Keep endpoint protection enabled and submit the sample to your security vendor for further analysis if it appeared unexpectedly.
Where this verdict could be wrong1 caveat
- droppedChildren.hasMaliciousChild=false and droppedChildren.rollup.malicious=0 — six inspected children returned unknown.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- unsigned executable
- high-entropy packed code
- process injection observed
- persistence mechanisms
- direct-IP network traffic
Treat the file as malicious and block or remove it; maintain current security tooling.
Coverage & freshness
Complete means the check returned a usable result. It does not mean the file is safe.
Antivirus
Complete51 of 74 engines flagged the file.
Sandbox
Complete1 isolated runtime environment contributed observations.
Network
Partial10 runtime contacts were observed without a completed reputation cross-check.
YARA
Complete4 signature or behavior rules 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
- 26MITRE ATT&CK techniques
- 15spawned processes
- 10network contacts
- 30filesystem & 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.
High concern: Used an input-capture technique that can record credentials or keystrokes.
High concern: Changed an auto-start location that can make code run after sign-in or restart.
High concern: Attempted to impair or bypass security controls.
High concern: Manipulated how the operating system loads code, which can redirect execution.
Moderate concern: Contained obfuscated or packed code that makes inspection harder.
Moderate concern: Removed execution artefacts or logs, which can conceal activity.
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.
Threat context
How remote-access malware works
This opens a secret 'back door' into your computer. Once it's running, an attacker can control your PC from anywhere — see your screen, read your files, switch on your webcam, install more malware, or use your machine to attack others.
Bottom line:It's built to stay hidden and keep that connection open for as long as possible.
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
BPFA.exe
4f5aa071b2a076aa3cdff8c39900e4e30d9ae268592e1f0da0b3b45960f59e82
01Uploaded file
Processes
Runtime execution
- ProcessObserved
Observed process
C:\Windows\system32\services.exe
02Isolated runtime analysis - ProcessObserved
Observed process
"C:\Users\<USER>\Desktop\BPFA.exe"
03Isolated runtime analysis - +1 more recorded observation in Analyst mode
Files
Created or changed
- Written fileObserved
wallpaper.jpg
C:\Users\<USER>\AppData\Local\Temp\wallpaper.jpg
04Isolated runtime analysis - Written fileObserved
x435r.exe
C:\Windows\Runtim\x435 \x412r\x43ek\x435r.exe
05Isolated runtime analysis - +1 more recorded observation in Analyst mode
Network
Hosts contacted
- Contacted hostObserved
a83f:8110:0:0:100:0:0:0
Contact observed during runtime.
06Isolated runtime analysis - Contacted hostObserved
192.168.0.77
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.
- a83f:8110:0:0:100:0:0:0
- 192.168.0.77
- 23.55.140.42
- a83f:8110:0:0:100:0:1800:0
- 192.168.0.49
- 20.99.133.109
- 184.27.218.92
- 23.32.75.166
- 23.196.193.245
- 20.69.140.28
- C:\Users\<USER>\AppData\Local\Temp\wallpaper.jpg
- C:\Windows\Runtim\x435 \x412r\x43ek\x435r.exe
- C:\Windows\Help\\x421\x41e\x41c Surr\x43eg\x430t\x435.exe
- C:\Users\<USER>\AppData\Local\Temp\errorsBPFA.txt
- C:\Users\<USER>\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\BPFA.exe.log
- %USERPROFILE%\AppData\Roaming\Microsoft\Windows\Themes\TranscodedWallpaper
- %USERPROFILE%\AppData\Roaming\Microsoft\Windows\Themes\CachedFiles\CachedImage_1280_1024_POS4.jpg
- C:\Program Files\Google\Policies
- C:\Program Files\Google\Temp\GUMC82D.tmp
- C:\Program Files\Google\Temp\GUMEF9C.tmp
- Local\__DDrawExclMode__
- Local\__DDrawCheckExclMode__
- \Sessions\1\BaseNamedObjects\Local\ZoneAttributeCacheCounterMutex
- \Sessions\1\BaseNamedObjects\Local\__DDrawExclMode__
- \Sessions\1\BaseNamedObjects\Local\__DDrawCheckExclMode__
Files this sample writes at runtime
This file drops 6 children at runtime. None are currently flagged malicious in our cache.
- 47da7c777d430dae5b43…ee3b80Never scannednever seen before
- 1f2799513cfa5dda44c3…e4f183Never scannednever seen before
- f779e64621bcffb4fd33…896a29Never scannednever seen before
- 0fb130b68d0870b672bd…acb67dNever scannednever seen before
- 94a879a546ee5db2244f…386adaNever scannednever seen before
- 68ca0e81b19d52b28898…3c2a34Never 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.
- 4rule hits recorded
- 51 / 74engines flagged
- 80sources in submission history
Why these facts are shown
Each statement identifies whether it was directly recorded or derived from saved scan facts.
- 01
2 high-confidence signature or behavior rules matched this file.
Verdict inputView chapterProvenanceDerivedSourceSignature and behavior rulesObserved at - 02
51 of 74 antivirus engines flagged the file, including AhnLab-V3 and Alibaba.
Verdict inputView chapterProvenanceObservedSourceAntivirus analysisObserved at - 03
The hash has been submitted 100 times from 80 sources.
ProvenanceDerivedSourceSaved report factsObserved at - 04
Scanned file: BPFA.exe — 4f5aa071b2a076aa3cdff8c39900e4e30d9ae268592e1f0da0b3b45960f59e82
ProvenanceObservedSourceUploaded fileObserved at - 05
Observed process — C:\Windows\system32\services.exe
ProvenanceObservedSourceIsolated runtime analysisObserved at - 06
Observed process — "C:\Users\<USER>\Desktop\BPFA.exe"
ProvenanceObservedSourceIsolated runtime analysisObserved at - 07
File written: wallpaper.jpg — C:\Users\<USER>\AppData\Local\Temp\wallpaper.jpg
ProvenanceObservedSourceIsolated runtime analysisObserved at - 08
File written: x435r.exe — C:\Windows\Runtim\x435 \x412r\x43ek\x435r.exe
ProvenanceObservedSourceIsolated runtime analysisObserved at - 09
Contacted host: a83f:8110:0:0:100:0:0:0 — Contact observed during runtime.
ProvenanceObservedSourceIsolated runtime analysisObserved at - 10
Contacted host: 192.168.0.77 — Contact observed during runtime.
ProvenanceObservedSourceIsolated runtime analysisObserved at
Detection sources at a glance
Category: rat
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.
Evidence%WINDIR%\system32\rundll32.exePE is packed (high-entropy code or known packer) AND unsigned AND at least one engine flagged it. Packing alone is common in legit software; packing + unsigned + signal is the malware-dropper pattern.
Evidencehigh-entropy code sectionThe sample contacted an external IP address directly and no application domain was recorded. Direct-IP traffic also occurs in legitimate installers and infrastructure, so this is supporting context only and requires corroboration from host reputation and other runtime evidence.
Evidencea83f:8110:0:0:100:0:0:0 · 23.55.140.42 · a83f:8110:0:0:100:0:1800:0Unsigned, packed PE with sandbox-observed network activity. The packing step hides the payload until execution; the network call fetches / reports for the next stage. Classic dropper / stager behaviour.
Evidencea83f:8110:0:0:100:0:0:0
51 of 74 engines flagged this file
View all 74 engine results
Section entropy & packers
Executable sections have high entropy (7.2+) — the code is compressed or encrypted and only decrypted at runtime. Classic packing behaviour.
How widely this file has been seen
Moderate prevalence — neither rare nor common. No strong prior applies.
Fingerprint and provenance
- File name
- BPFA.exe
- Format
- Win32 EXE
- Code signing
- No verified publisher
- Size
- 2.4 MB
- Last analyzed
- Aug 9, 2026, 6:13 AM UTC
4f5aa071b2a076aa3cdff8c39900e4e30d9ae268592e1f0da0b3b45960f59e82Safety & FAQ
Complete recovery guidance and answers for the next decision.
What to do now
This file is dangerous. Treat it as harmful and remove it.
- Recovery step 01
Don't run this file. Delete this file from the device, then empty the Recycle Bin or Trash.
- Recovery step 02
If you already ran it, disconnect from the internet and start with a full antivirus scan or Microsoft Defender Offline scan. If compromise is suspected or the problem persists, use a reputable second-opinion scanner and follow incident-recovery or clean-reinstall guidance.
- Recovery step 03
From a different, clean device, change the passwords on your important accounts (email and banking first) and turn on two-factor authentication.
- Recovery step 04
Get a fresh copy from the developer's official site or an official app store.
Safety FAQ
Direct answers grounded in the saved verdict and evidence in this report.
Is BPFA.exe a virus?
What is BPFA.exe?
How many antivirus engines detected BPFA.exe?
What should I do if I already ran BPFA.exe?
How do I remove BPFA.exe?
What kind of malware is BPFA.exe?
What is the SHA-256 hash of BPFA.exe?
How up to date is this analysis of BPFA.exe?
Community
Member reviews and reports for this exact file hash.