Safe
Official qBittorrent 5.0.5 x64 installer: clean across 71 engines, high prevalence, confirmed clean by community researchers.
875c13a389eac2c656…e40f75ec7fThe verdict, reasoned out.
Not a rules engine. The MT AI Engine reads every signal we collected, weighs them against history, and commits to an answer.
Zero malicious detections from high-coverage scanning, including full tier-1 consensus on clean, strongly indicates safety. High prevalence as common_old commodity software aligns with legitimate distribution of qBittorrent, a well-known open-source application. Community comments unanimously confirm it as the official installer. While heuristics flag process injection (likely NSIS unpacking into Explorer) and generic YARA rules, these lack backing from engines or sandbox verdicts and are outweighed by clean signals. No malicious behavior in drops, contacts, or runtime.
Each signal cites a concrete token from the evidence the arbiter saw — engine name, MITRE technique, signer string, or an exact count.
engines: 0/71 malicious (17/17 tier1 clean)
prevalence: common_old (3661 uniqueSources)
communityComments: 'official setup of qbittorrent 5.0.5 x64'
fileName: qbittorrent_5.0.5_x64_setup.exe (hasInstallerHint=true)
- engines: 0 malicious / 17 tier1 clean
- prevalence: common_old (3661 sources)
- communityComments: 4x clean/qBittorrent confirmations
- file.reputation=7, ageDays=392
- triggeredHeuristics: MalwareTips.Synth.ProcessInjection (high severity)
- externalIntel.yaraify: 2 rules ('win_rat_generic')
- behaviour.offensiveTechniques: T1055, T1134
- tags: detect-debug-environment, overlay
This is a legitimate qBittorrent installer. Proceed with installation confidently, preferably from the official website to ensure the latest version.
Sus Obf Enc Spoof Hide PE corroborated by 1 source
- 2 YARA rulesSus_Obf_Enc_Spoof_Hide_PE, win_rat_generic
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.
- 224.0.0.251
- 20.75.60.91
- 23.196.145.221
- 23.53.122.199
- 20.99.133.109
- 184.27.218.92
- 20.69.140.28
- 192.168.0.14
- 192.168.0.23
- 23.32.75.18
- C:\Users\<USER>\AppData\Local\Temp\nsvD5A0.tmp
- C:\Users\<USER>\AppData\Local\Temp\nsaD5C0.tmp\UAC.dll
- C:\Users\<USER>\AppData\Local\Temp\nsaD5C0.tmp\LangDLL.dll
- C:\Users\<USER>\AppData\Local\Temp\nsaD5C0.tmp\System.dll
- C:\Users\<USER>\AppData\Local\Temp\nsaD5C0.tmp\modern-header.bmp
- C:\Users\<USER>\AppData\Local\Temp\nsaD5C0.tmp\FindProcDLL.dll
- C:\Users\<USER>\AppData\Local\Temp\nsaD5C0.tmp\LangDLL.dll
- C:\Users\<USER>\AppData\Local\Temp\nsaD5C0.tmp\modern-header.bmp
- C:\Users\<USER>\AppData\Local\Temp\nsaD5C0.tmp\modern-wizard.bmp
- C:\Users\<USER>\AppData\Local\Temp\nsaD5C0.tmp\nsDialogs.dll
- cversions.3.m
- Local\SessionImmersiveColorMutex
- QtLockedFile mutex c:/users/bruno/appdata/roaming/qbittorrent/lockfile
Files this sample writes at runtime
This file drops 10 children at runtime. None are currently flagged malicious in our cache.
- 314243a55c32679ad473…50c1a7Never scannednever seen before
- 005b0aa0c9a5b930dfdd…bea13dNever scannednever seen before
- 51b8ff55b37dc5907d63…a786e0Never scannednever seen before
- 7808ed542a7833c4bd94…687300Never scannednever seen before
- bb86a4094dec468cb638…a1389dNever scannednever seen before
- c44e0313a9414cc0e490…92034fNever scannednever seen before
- ec31a26cdf3b41bca0d0…645be0Never scannednever seen before
- f78e59b5bdd586181a99…2253d2Never scannednever seen before
- 7d1e5ca3310b54d104c1…b25c22Never scannednever seen before
- 3da6605668f9178d11a8…9c224bNever scannednever seen before
1 corroborating signal from researcher-curated sources
- Sus_Obf_Enc_Spoof_Hide_PEby XiAnzhengCheck for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
- win_rat_genericby Reedus0Rule for detecting generic RAT malware
YARA + heuristic rules that fired
A researcher-curated or high-severity heuristic rule matched this sample. These rules target specific malware families and are near-definitive.
- Sus_Obf_Enc_Spoof_Hide_PE
- win_rat_generic
MITRE T1055 (Process Injection) observed — CreateRemoteThread / APC / reflective-DLL injection. The payload is being smuggled into a legitimate process to bypass AV hooks.
EvidenceC:\Windows\Explorer.EXESample 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.
Evidence20.75.60.91 · 23.196.145.221 · 23.53.122.199
0 detections across 76 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 often this file shows up in the wild
Widely seen in the wild for a long time. High prior this is legitimate; isolated detections on common-old files are usually false positives.
Forensic fingerprint
- File name
- qbittorrent_5.0.5_x64_setup.exe
- Size
- 38.09 MB
- MIME type
- (unknown)
- Detected type
- Win32 EXE
- SHA-256
- 875c13a389eac2c656c26ec2c676168b91acf5ba376bea4c31e2efe40f75ec7f
- MD5
- 0ecf83f09c19df0f3c2806c4cc2b22a6
- SHA-1
- 8d3cffae35513a22d37c17407d13abf1771d26bf
- PE imphash
- 9dda1a1d1f8a1d13ae0297b47046b26e
- First seen (VT)
- 4/13/2025, 5:03:48 PM
- Last analysis (VT)
- 2/18/2026, 7:55:35 AM
- First scan (MalwareTips)
- 5/11/2026, 4:07:14 AM
- Last scan (MalwareTips)
- 5/11/2026, 4:07:14 AM
- Community reputation
- +7trusted
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.