File verdict·Decided by the MT AI Engine
Our call

Suspicious

Unsigned Android APK with one tier-1 RiskTool label, direct-IP contact pattern, and obfuscation tags.

revpn
Trust score48Caution
release.apk
12.3 MB
59e4739bb16c1707ea047662e39e
Antivirus engines
3 of 76 flagged
Code signing
Unsigned
Age
First seen 9mo ago
MT AI Engine · Verdict analysis

The reasoning behind this verdict

The MT AI Engine weighs every signal from this scan — antivirus detections, sandbox behaviour, code signing, prevalence and historical matches — to reach a single, evidence-based verdict.

62%Confidence
Moderate
Reasoning

The single tier-1 detection names a RiskTool rather than a clear malware family, and the remaining two detections are lower-tier. Direct-IP communication without DNS is flagged by our heuristic as suspicious, yet no sandbox malicious verdict, no malicious children, and no external-intel hits exist. The file is unsigned with medium prevalence, leaving the overall picture borderline between a potentially unwanted VPN tool and something more covert.

Key signals · 5

Each signal cites a concrete token from the evidence the arbiter saw — engine name, MITRE technique, signer string, or an exact count.

  1. engines.tier1Malicious=1 (Kaspersky 'not-a-virus:HEUR:RiskTool.AndroidOS.Revpn.ae')

  2. triggeredHeuristics[0].rule='MalwareTips.Synth.DirectIpC2' fired with 15 contacted IPs and zero domains

  3. file.tags=['obfuscated','reflection','contains-elf','checks-gps']

  4. signing.signed=false with no signerStats history

  5. prevalence.classification='medium' (31 uniqueSources)

Points in its favour
  • Only one tier-1 engine flagged
  • No malicious sandbox verdicts
  • No malicious dropped children
  • Medium prevalence with no external-intel hits
Points against
  • Unsigned APK
  • Direct IP contacts without DNS
  • Obfuscated code and reflection
  • Single tier-1 RiskTool detection
Recommended action

Treat as suspicious riskware; avoid installation until a signed, verified source is confirmed or further dynamic analysis clears the direct-IP behaviour.

What this file does

What it attempted when executed in an isolated sandbox

  • Moderate concern: Connects out to 15 servers on the internet.

Translated from the file's technical behaviour during analysis. It never ran on your device.

What to do now

We couldn't fully clear this file. Treat it with caution.

  1. Don't run it unless you're certain it came from a source you trust.

  2. Check where you got it — an email attachment or a random download link is a red flag.

  3. If you're unsure, delete it. You can always re-download a clean copy from the official source.

  4. If you're still unsure, scan it again in a day or two — detections often catch up on newer files.

Threat family attribution

revpn corroborated by 2 sources

  • VT (76 engines)
    revpn
  • MT AI Engine
    revpn
Dropped payload

Files this sample writes at runtime

This file drops 4 children at runtime. None are currently flagged malicious in our cache.

4 unseen
  • a2fa62f7cfbef313e340e90167Never scanned
    never seen before
  • 10f300c49bea26dd02e7dc052aNever scanned
    never seen before
  • 61a0d0cca6eda24cd00a4b4460Never scanned
    never seen before
  • 351ba4634d2f53905dd8a670ccNever scanned
    never seen before
No researcher-database hits
External threat-intel sources were not collected for this scan.
Signature matches

YARA & heuristic rule matches

One or more medium-severity heuristic rules matched. Not definitive, but the patterns match known malware behaviour.

1 synthesis
MITRE ATT&CK profile
C2× 1
MalwareTips synthesis rules
Our own detection rules, applied to the scan data and sandbox behaviour
  • DirectIpC2medium

    Sample contacted 15 external IP address(es) and zero domains. Benign software virtually always uses DNS; no-DNS direct-IP C2 is a strong malware indicator because it bypasses reputation systems and dodges domain-based blocklists.

    Evidence
    212.227.214.107 · 142.251.111.94 · 172.67.151.52
Antivirus engine breakdown

3 detections across 76 engines

3 malicious0 suspicious73 clean
Tier-117 engines
1flag
Top commercial AVs (low FP rate)
Tier-241 engines
1flag
Mainstream engines with mixed FP rates
Low-trust18 engines
1flag
Heuristic / generic-AI engines (high FP rate)
BitDefenderFalx
malicious
Android.Riskware.Agent.gHMGJ
Kaspersky
malicious
not-a-virus:HEUR:RiskTool.AndroidOS.Revpn.ae
Rising
malicious
Hacktool.Revpn/Android!8.13A49 (CLOUD)
Hash 59e4739bb16c… cross-referenced against 76 AV engines via our AV network.
Prevalence

How widely this file has been seen

Moderate prevalence — neither rare nor common. No strong prior applies.

Medium
Unique uploaders
31
Moderate upload volume.
Total submissions
37
Includes repeat uploads by the same source.
First seen
8mo ago
Nov 6, 2025
Prevalence quadrant
Rare · New
Targeted malware lives here
Common · New
Just-released software
Rare · Old
Niche or internal tooling
Common · Old
Trusted legitimate binaries
File identity

Forensic fingerprint

File biography
First seen (VT)
11/6/2025, 9:19:14 AM
First seen (MalwareBazaar)
Last analysis (VT)
4/4/2026, 8:28:56 PM
Scanned here
7/18/2026, 9:23:25 PM
File name
release.apk
Size
12.27 MB
MIME type
(unknown)
Detected type
Android
SHA-256
59e4739bb16c1707eae76664df78621e99f84558169d541e0c19c1047662e39e
MD5
6da761e8c494a9dbb3a22ed327b3da1d
SHA-1
d55fca2cf804429932c3c5905a9157072e780eb0
First seen (VT)
11/6/2025, 9:19:14 AM
Last analysis (VT)
4/4/2026, 8:28:56 PM
First scan (MalwareTips)
7/18/2026, 9:23:25 PM
Last scan (MalwareTips)
7/18/2026, 9:23:25 PM
Behavior tags
contains-elfapkandroidreflectiontelephonychecks-cpu-nameobfuscatedchecks-gps
Frequently asked

Safety FAQ

Common questions about release.apk, answered from the scan data above.

  • release.apk is suspicious — treat it as unsafe until you're sure. 3 of 76 antivirus engines flag it (family: revpn), which isn't a strong consensus but is enough to be cautious. Don't installed it unless you fully trust where it came from, and prefer downloading the software fresh from its official site.
  • release.apk is an Android app (APK), about 12.3 MB. We identify a file by its cryptographic hash rather than its name, because the same filename can be reused by completely different files — the hash below is the reliable fingerprint.
  • 3 of 76 antivirus engines flagged release.apk, 3 of them as outright malicious. A small number of detections can include false positives, so we weigh which engines flagged it and what else the file does, not just the raw count.
  • Act quickly. 1) Disconnect the device from the internet to stop the malware communicating or spreading. 2) Run a full scan with reputable anti-malware software (such as Malwarebytes) and quarantine everything it finds. 3) Change your important passwords from a DIFFERENT, clean device — many threats log keystrokes or steal saved credentials. 4) If you bank or shop on this device, watch closely for fraud and alert your bank. 5) For a confirmed infection, the most reliable fix is to back up your personal files and reinstall the operating system for a clean start.
  • To remove release.apk: 1) restart into Safe Mode (Safe Mode with Networking if you need to download a tool) so the malware doesn't auto-start. 2) Run a full scan with reputable anti-malware software and let it quarantine or delete the detections. 3) Delete the original release.apk file and empty the Recycle Bin/Trash. 4) Check your browser extensions, startup items, and scheduled tasks for anything unfamiliar. 5) Reboot and scan again to confirm it's gone. If detections keep coming back, a clean operating-system reinstall is the most dependable cure.
  • release.apk is classified as adware or a potentially unwanted program (PUA) — not always destructive, but it bundles ads, trackers, or unwanted changes you didn't ask for. Engines attribute it to the revpn family. Knowing the family matters because it tells you the likely impact — data theft, remote control, file encryption, or unwanted ads — and guides the cleanup.
  • The SHA-256 hash of release.apk is 59e4739bb16c1707eae76664df78621e99f84558169d541e0c19c1047662e39e, and its MD5 is 6da761e8c494a9dbb3a22ed327b3da1d. This hash is the file's unique fingerprint — two files with the same SHA-256 are identical. Use it to confirm you're looking at exactly this file (not just one with the same name) when comparing against antivirus databases or a download's published checksum.
  • This report reflects the scan run on July 18, 2026. Because a file's hash never changes, the identity of release.apk is fixed — but antivirus coverage improves over time, so a file that looks clean today can pick up detections later (and vice-versa). If you need the latest picture, MalwareTips staff can re-run the analysis from scratch.
Community classification

Reviews & malware reports(0)

Tell the community what you saw. Tag the sample — Trojan, Adware, False Positive — and share what the file did on your system. Your report helps confirm or dispute the AV verdict.

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Files are processed in a streaming pass-through — MalwareTips never stores the binary on its servers. Only the scan result (hash, detections, verdict) is retained so the next person who scans the same file gets an instant answer. If you ran this file on your computer and are worried, scan your system with an up-to-date antivirus and change critical passwords from a different device.