Categories: Backdoor

Backdoor:Win32/Hostposer.B removal tips

The Backdoor:Win32/Hostposer.B 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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What Backdoor:Win32/Hostposer.B virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • The binary contains an unknown PE section name indicative of packing
  • The binary likely contains encrypted or compressed data.
  • The executable is compressed using UPX
  • Authenticode signature is invalid
  • Yara detections observed in process dumps, payloads or dropped files

How to determine Backdoor:Win32/Hostposer.B?


File Info:

name: 9398082F20625D9F34CF.mlwpath: /opt/CAPEv2/storage/binaries/c35ef8a1f172ccd9ed77ac56b43d6c12abf943db11ef736c234d61d5ef17b33ccrc32: 3C9E7022md5: 9398082f20625d9f34cf0bb65ce7f645sha1: 5429babd3e6a9cb5e12e35e33638b3a880e72bd3sha256: c35ef8a1f172ccd9ed77ac56b43d6c12abf943db11ef736c234d61d5ef17b33csha512: b872431c077da92dfae91a30f850881e882537d1cdb71df5131703eabfd10c9c629b5634bc5e09992f19804024a92ad2c872592368acd7bad7f2149cdccdc144ssdeep: 384:1B+PrN7VwjcoHMYBFEbMzL04GYbWdrCJgRDYvcbfTYo:1B+TsGMMNYadrCUUvcLstype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T125A26C153BACEDCDD1EB5B306F56DABA9756BC304F1782371AE8510EC928983CC4069Asha3_384: eb24a20bc364df67ae59f39d855a78f38506e54dd5d3a7646fad2f4f9541c348c7d19577340cbc3566e071df759d93edep_bytes: 60be000041008dbe0010ffff5783cdfftimestamp: 2012-07-05 06:13:21

Version Info:

Translation: 0x0409 0x04b0Comments: Shareaza Ultimate File SharingCompanyName: Shareaza Development TeamFileDescription: Shareaza Ultimate File SharingLegalCopyright: Copyright © Shareaza Development Team, 2002-2011. All rights reserved.ProductName: ShareazaFileVersion: 2000.05.0555ProductVersion: 2000.05.0555InternalName: nostaugia_1OriginalFilename: nostaugia_1.exe

Backdoor:Win32/Hostposer.B also known as:

Lionic Trojan.Win32.VB.ltvz
Elastic malicious (moderate confidence)
MicroWorld-eScan Gen:Variant.Razy.699168
ClamAV Win.Trojan.Ag-1
FireEye Gen:Variant.Razy.699168
Skyhigh BehavesLike.Win32.Trojan.mh
McAfee GenericRXAA-FA!9398082F2062
Cylance unsafe
Zillya Downloader.VB.Win32.56702
Sangfor Backdoor.Win32.Hostposer.Vncm
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Backdoor:Win32/VBKrypt.9d3c671e
K7GW Trojan-Downloader ( 000d1f581 )
K7AntiVirus Trojan-Downloader ( 000d1f581 )
BitDefenderTheta Gen:NN.ZevbaF.36744.bmKfaGzDPCai
VirIT Trojan.Win32.Generic.CJLB
Symantec ML.Attribute.HighConfidence
tehtris Generic.Malware
ESET-NOD32 a variant of Win32/TrojanDownloader.VB.POZ
APEX Malicious
Cynet Malicious (score: 100)
Kaspersky Trojan.Win32.VBKrypt.ytgt
BitDefender Gen:Variant.Razy.699168
NANO-Antivirus Trojan.Win32.VB.ecpxjm
Avast Win32:VB-ADPG [Trj]
Tencent Win32.Trojan.Vbkrypt.Xylw
TACHYON Trojan/W32.VB-VBKrypt.65536.AB
Sophos Mal/VB-AEW
F-Secure Trojan.TR/Dropper.Gen
VIPRE Gen:Variant.Razy.699168
TrendMicro TROJ_GEN.R002C0DB524
Trapmine malicious.high.ml.score
Emsisoft Gen:Variant.Razy.699168 (B)
Ikarus Trojan.Win32.VB
GData Gen:Variant.Razy.699168
Webroot W32.Trojan.Gen
Varist W32/Hostposer.A.gen!Eldorado
Avira TR/Dropper.Gen
Antiy-AVL Trojan[Downloader]/Win32.VB
Kingsoft Win32.Trojan.VBKrypt.ytgt
Xcitium TrojWare.Win32.TrojanDownloader.VB.PQZ@4pfb5q
Arcabit Trojan.Razy.DAAB20
ViRobot Trojan.Win32.A.Downloader.23040.DP[UPX]
ZoneAlarm Trojan.Win32.VBKrypt.ytgt
Microsoft Backdoor:Win32/Hostposer.B
Google Detected
AhnLab-V3 Downloader/Win32.Genome.C56789
ALYac Gen:Variant.Razy.699168
MAX malware (ai score=99)
VBA32 Trojan.VB.Banker.gen
Malwarebytes Generic.Malware/Suspicious
Panda Trj/Genetic.gen
TrendMicro-HouseCall TROJ_GEN.R002C0DB524
Rising Backdoor.Hostposer!8.CC9 (CLOUD)
Yandex Trojan.DL.VB!CYLaSgGv5ZQ
SentinelOne Static AI – Malicious PE
MaxSecure Trojan.Malware.4237015.susgen
Fortinet W32/TrojanDownloader.VB.POZ
AVG Win32:VB-ADPG [Trj]
DeepInstinct MALICIOUS

How to remove Backdoor:Win32/Hostposer.B?

  • 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.
Paul Valéry

I'm a cyber security analyst and data science expert with 5+ years of experience with security software contractors.

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