Safe
Clean signed executable from Netease with zero malicious detections and widespread distribution.
8361adf3c057426151…1298787933The 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.
Zero engine detections and a verified digital signature from a known game publisher strongly indicate a legitimate downloader. The single triggered heuristic on direct-IP contacts is explainable by legitimate software using hardcoded endpoints or Google DNS. High submission volume and absence of malicious children or sandbox verdicts further support a clean classification.
Each signal cites a concrete token from the evidence the arbiter saw — engine name, MITRE technique, signer string, or an exact count.
engines.malicious=0 and engines.tier1Malicious=0 across 69 reporting engines
signing.verified=true, signer='Netease Interactive Entertainment Pte. Ltd.'
prevalence.classification='common_new' (1204 unique sources, 1314 submissions)
behaviour.hasMaliciousSandboxVerdict=false and droppedChildren.hasMaliciousChild=false
triggeredHeuristics[0].rule='MalwareTips.Synth.DirectIpC2' (medium severity, direct-IP contacts)
- Zero malicious detections across 69 engines
- Verified signature from Netease Interactive Entertainment
- High submission volume indicating legitimate distribution
- No malicious sandbox verdict or dropped children
- Direct IP contacts without DNS resolution (heuristic trigger)
Proceed with normal use; the evidence supports a clean classification.
What to do now
This file looks safe based on everything we checked.
This file is safe to use.
Good habit: only download files from the official website or an app store.
Keep your antivirus and Windows updates switched on so you stay protected.
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.
- 8.8.8.8
- 34.36.47.246
- 23.33.192.10
- 162.159.36.2
- C:\Users\<USER>\AppData\Local\Temp\7z3BFCFAD0\config.ini
- C:\Users\<USER>\AppData\Local\Temp\7z3BFCFAD0\skin.zip
- C:\Users\<USER>\AppData\Local\Temp\7z3BFCFAD0\nemu-downloader.exe
- C:\Users\<USER>\AppData\Local\Temp\7z3BFCFAD0\MuMuDownloader.exe
- C:\Users\<USER>\AppData\Local\Temp\7z3BFCFAD0\msvcp_win.dll
- C:\Users\<USER>\AppData\Local\NemuServer\.sentry-native\fb296405-051e-48a4-d022-443cb768fadc.run\session.json
- nemu-downloader-run-mutex
- ColaBoxChecker:config
Files this sample writes at runtime
This file drops 10 children at runtime. None are currently flagged malicious in our cache.
- a3f8c3a0f3cbb1712c84…095250Never scannednever seen before
- aa40840b724a3c1e1d2d…454c10Never scannednever seen before
- e5b377e0fe13e27a2172…05bff5Never scannednever seen before
- 7b3463c16416c93d9b8b…658a3cNever scannednever seen before
- d56c631b0f4f70bdeebc…d22399Never scannednever seen before
- da48178bbdd98fa8906b…09fcdaNever scannednever seen before
- 6ee46c6b6727eb77bcbc…58844eNever scannednever seen before
- dcb9cf7e31d6772434c6…88294cNever scannednever seen before
- b15964d49a2c5219e092…4e401fNever scannednever seen before
- 582e87ade6dac2588441…74c74bNever scannednever seen before
YARA & heuristic rule matches
One or more medium-severity heuristic rules matched. Not definitive, but the patterns match known malware behaviour.
Sample contacted 4 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.
Evidence8.8.8.8 · 34.36.47.246 · 23.33.192.10
0 detections across 74 engines
Section entropy & packers
Section-level entropy and packer detection from the PE header. Nothing suspicious here — entropy is within the normal range for unpacked code.
How widely this file has been seen
Lots of people are uploading this but it's recent — typical of newly-released legitimate software. Low prior for malware.
Forensic fingerprint
- File name
- NemuDownloader.exe
- Size
- 5.82 MB
- MIME type
- (unknown)
- Detected type
- Win32 EXE
- SHA-256
- 8361adf3c0574261510b3ae887e8c50b003bba62da3119ec01e1891298787933
- MD5
- e2d77fe5a406b3e7ebfc9263b4e53258
- SHA-1
- fdb970321d8ec9cd93e7bef0bfc3caa7cb5c9ea8
- PE imphash
- 77f81ec12eacdb769388a8e410647817
- First seen (VT)
- 7/8/2026, 2:32:18 AM
- Last analysis (VT)
- 7/20/2026, 5:39:52 AM
- First scan (MalwareTips)
- 7/20/2026, 11:58:18 AM
- Last scan (MalwareTips)
- 7/20/2026, 11:58:18 AM
- Code signer
- Netease Interactive Entertainment Pte. Ltd.verified
Safety FAQ
Common questions about NemuDownloader.exe, answered from the scan data above.
- NemuDownloader.exe appears safe. 74 of 74 antivirus engines report it clean. It carries a verified digital signature from Netease Interactive Entertainment Pte. Ltd.. As a habit, only run files you downloaded from the official source, since attackers sometimes distribute trojanised copies of legitimate software under the same name.
- NemuDownloader.exe is a Windows executable program, about 5.8 MB. Our analysis found no threat indicators for it. It carries a verified digital signature from Netease Interactive Entertainment Pte. Ltd.. A file's name can be reused by different files, so we identify it by its cryptographic hash (below).
- None — all 74 antivirus engines we queried report NemuDownloader.exe as clean. That's reassuring, though brand-new malware can briefly evade detection before vendors add signatures, so we also weigh the file's behaviour and reputation.
- Yes — NemuDownloader.exe carries a valid digital signature from Netease Interactive Entertainment Pte. Ltd., which confirms the file hasn't been tampered with since that publisher signed it. A valid signature is a positive signal, but note that malware is occasionally signed with stolen or abused certificates, so it isn't proof of safety on its own.
- The SHA-256 hash of NemuDownloader.exe is 8361adf3c0574261510b3ae887e8c50b003bba62da3119ec01e1891298787933, and its MD5 is e2d77fe5a406b3e7ebfc9263b4e53258. 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.
- Based on this scan, yes — NemuDownloader.exe shows no threat indicators and is properly signed. The important caveat is source: make sure you downloaded it from the official website or a trusted store, because attackers sometimes distribute malware-laced copies under a legitimate file's name. If your own antivirus flags it while we report it clean, that is most often a false positive, but verify the source before overriding your antivirus.
- This report reflects the scan run on July 20, 2026. Because a file's hash never changes, the identity of NemuDownloader.exe 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.
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.