The Trojan:Win32/QHosts.BF is considered dangerous by lots of security experts. When this infection is active, you may notice unwanted processes in Task Manager list. In this case, it is adviced to scan your computer with GridinSoft Anti-Malware.

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Removing PC viruses manually may take hours and may damage your PC in the process. We recommend using GridinSoft Anti-Malware for virus removal. Allows to complete scan and cure your PC during the trial period.
What Trojan:Win32/QHosts.BF virus can do?
- Sample contains Overlay data
- Reads data out of its own binary image
- CAPE extracted potentially suspicious content
- Unconventionial language used in binary resources: Russian
- The binary contains an unknown PE section name indicative of packing
- Authenticode signature is invalid
- A scripting utility was executed
- Uses Windows utilities for basic functionality
- Uses Windows utilities to create a scheduled task
- The sample wrote data to the system hosts file.
- Yara rule detections observed from a process memory dump/dropped files/CAPE
How to determine Trojan:Win32/QHosts.BF?
File Info:
name: E082B88DF640EE43A4D9.mlwpath: /opt/CAPEv2/storage/binaries/66c229ead49189d369d04c41bd28a045b2b48b73233cd874c18bcd15f476c535crc32: 1AC825D7md5: e082b88df640ee43a4d9ef63a3b0cd40sha1: 57753829fd791eb29c48216710b65dd65f33da9csha256: 66c229ead49189d369d04c41bd28a045b2b48b73233cd874c18bcd15f476c535sha512: 096debbbbdbb2fc8476883de041193254235e8eedc2377c4fbec801e06416d18e0ee41dea6a179a02696f0c8e905a57d4897236c3f89cc857a9bbaa59f10386dssdeep: 3072:+BAp5XhKpN4eOyVTGfhEClj8jTk+0hdWMQ11Gas:VbXE9OiTGfhEClq9bMc1tstype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1E004F812A4418973C0010576CC079E96B4A72DD03E35B7B3BFB55AFBCE69C8A7B2C169sha3_384: 1226045e3ccacd8e6927ae78902a5368530e032589162561b9e2dc2b91e1f653d6f6e015e7459ee62cdab259316c0537ep_bytes: 558bec83c4f0b89c7c4100e86cabfefftimestamp: 1992-06-19 22:22:17Version Info:
Comments: CompanyName: koasols FileDescription: 8000009 0.1009 Installation FileVersion: 0.1009 LegalCopyright: koasols Translation: 0x0409 0x04e4
Trojan:Win32/QHosts.BF also known as:
Bkav | W32.AIDetectMalware |
DrWeb | Trojan.Hosts.6553 |
MicroWorld-eScan | Gen:Heur.SMHeist.1 |
FireEye | Gen:Heur.SMHeist.1 |
CAT-QuickHeal | BAT/Qhost.AF |
McAfee | Generic StartPage.sim |
Cylance | unsafe |
Sangfor | Trojan.Win32.Bicololo.Vrs4 |
K7AntiVirus | Trojan ( 003982501 ) |
Alibaba | TrojanDownloader:Win32/QHosts.2935787c |
K7GW | Trojan ( 003982501 ) |
Cybereason | malicious.df640e |
Cyren | W32/Qhost.M.gen!Eldorado |
Symantec | ML.Attribute.HighConfidence |
Elastic | malicious (high confidence) |
ESET-NOD32 | Win32/Bicololo.A |
APEX | Malicious |
Cynet | Malicious (score: 100) |
Kaspersky | UDS:Trojan.Win32.Bicololo |
BitDefender | Gen:Heur.SMHeist.1 |
NANO-Antivirus | Trojan.Script.Qhost.cjeaqy |
SUPERAntiSpyware | Trojan.Agent/Gen-BIcololo |
Avast | BV:Bicololo-CD [Trj] |
Tencent | Win32.Trojan.Dropper.Sgil |
Emsisoft | Gen:Heur.SMHeist.1 (B) |
F-Secure | Malware.VBS/Bicololo.N |
VIPRE | Gen:Heur.SMHeist.1 |
McAfee-GW-Edition | BehavesLike.Win32.ObfuscatedPoly.cm |
Trapmine | malicious.high.ml.score |
Sophos | Mal/Generic-S |
Ikarus | Trojan.SuspectCRC |
GData | Gen:Heur.SMHeist.1 |
Avira | TR/Dropper.Gen |
Xcitium | TrojWare.Win32.Bicololo.AA@51cpp4 |
Arcabit | Trojan.SMHeist.1 |
ZoneAlarm | HEUR:Trojan-Downloader.Script.Generic |
Microsoft | Trojan:Win32/QHosts.BF |
Detected | |
ALYac | Gen:Heur.SMHeist.1 |
MAX | malware (ai score=100) |
Panda | Trj/CI.A |
Yandex | Trojan.Qhosts!W9gEaMTRx4w |
MaxSecure | Trojan.Malware.300983.susgen |
Fortinet | W32/Bicololo.A!tr |
AVG | BV:Bicololo-CD [Trj] |
DeepInstinct | MALICIOUS |
CrowdStrike | win/malicious_confidence_90% (D) |
How to remove Trojan:Win32/QHosts.BF?
- Download and install GridinSoft Anti-Malware.
- Open GridinSoft Anti-Malware and perform a “Standard scan“.
- “Move to quarantine” all items.
- Open “Tools” tab – Press “Reset Browser Settings“.
- Select proper browser and options – Click “Reset”.
- Restart your computer.
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