Categories: Trojan

Trojan:Win32/Koutodoor.F removal guide

The Trojan:Win32/Koutodoor.F 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.
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What Trojan:Win32/Koutodoor.F virus can do?

  • Unconventionial binary language: Chinese (Simplified)
  • Unconventionial language used in binary resources: Chinese (Simplified)
  • The binary contains an unknown PE section name indicative of packing
  • Authenticode signature is invalid

How to determine Trojan:Win32/Koutodoor.F?


File Info:

name: 3F7AD3D5987FC9C9C4F8.mlwpath: /opt/CAPEv2/storage/binaries/bef7d843cd2973109893f56f57c99f0420251f2402617574eeb909a8e623c6b7crc32: BE55286Amd5: 3f7ad3d5987fc9c9c4f811b541aa9e35sha1: 81b5f206e54bccdb87d0cc462c8b3449a92f38a5sha256: bef7d843cd2973109893f56f57c99f0420251f2402617574eeb909a8e623c6b7sha512: a35b5dae4f9e1b920a016cb422e8a8b6ee2dc6865d3b3b7bb0a6d47fd606f14543800bbdb868d60a3bc057d8bb9d7eb7ea2ca7d7e6c5cae5e8ea8a33202fe008ssdeep: 768:oZVZCbAEhdHWC5tp+CcpxM4+J3AU1c968aZLqrVg89:4wdkC5sM4aAUGCG1type: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1D4E28E513065D335DADF533216972B102FBB6930546398F2CB88CA693BE6F213E23606sha3_384: 0edd8d7abed131b428a859b319c0fd992f101b391fb325ee2b7ef5c438cfe9cc2d19069d7069d5a0d0203e239d355686ep_bytes: 558bec83ec1853565733ff897dfce833timestamp: 2010-05-31 02:37:55

Version Info:

CompanyName: Microsoft CorporationFileDescription: FileVersion: 1, 0, 0, 1LegalCopyright: Copyright 2009ProductVersion: 1, 0, 0, 1Translation: 0x0804 0x04b0

Trojan:Win32/Koutodoor.F also known as:

Bkav W32.AIDetectMalware
Lionic Trojan.Win32.Generic.l5oD
MicroWorld-eScan Gen:Variant.Koutodoor.4
FireEye Generic.mg.3f7ad3d5987fc9c9
CAT-QuickHeal Trojan.Koutodoor.E
Skyhigh BehavesLike.Win32.Generic.nh
McAfee Koutodoor.gen.o
Zillya Trojan.Koutodoor.Win32.2122
Sangfor Suspicious.Win32.Save.ins
K7AntiVirus Backdoor ( 0018738c1 )
Alibaba Trojan:Win32/Koutodoor.bf09851b
K7GW Backdoor ( 0018738c1 )
VirIT Trojan.Win32.Hider.DVN
Symantec Hacktool.Rootkit
Elastic malicious (high confidence)
ESET-NOD32 a variant of Win32/Koutodoor.GK
APEX Malicious
Cynet Malicious (score: 99)
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.Koutodoor.4
NANO-Antivirus Trojan.Win32.MLW.crtzd
Avast Win32:Caxnet [Trj]
Tencent Rootkit.Win32.Agent.c
Sophos Mal/Koutodoor-A
Baidu Win32.Rootkit.Koutodoor.a
F-Secure Trojan.TR/Rootkit.Gen
VIPRE Gen:Variant.Koutodoor.4
TrendMicro RTKT_KTDOOR.SMIA
Trapmine malicious.high.ml.score
Emsisoft Gen:Variant.Koutodoor.4 (B)
SentinelOne Static AI – Suspicious PE
GData Gen:Variant.Koutodoor.4
Jiangmin Backdoor/Koutodoor.px
Google Detected
Avira TR/Rootkit.Gen
Antiy-AVL Trojan/Win32.Unknown
Kingsoft Win32.HeurC.KVMH008.a
Xcitium TrojWare.Win32.Zybr.B@1h4wl9
Arcabit Trojan.Koutodoor.4
ZoneAlarm HEUR:Trojan.Win32.Generic
Microsoft Trojan:Win32/Koutodoor.F
Varist W32/Koutodoor.K.gen!Eldorado
AhnLab-V3 Win-Trojan/Koutodoor4.Gen
VBA32 BScope.Trojan.Koutodoor
ALYac Gen:Variant.Koutodoor.4
MAX malware (ai score=100)
Cylance unsafe
Panda Trj/CI.A
TrendMicro-HouseCall RTKT_KTDOOR.SMIA
Rising RootKit.Win32.Undef.ctu (CLASSIC)
Yandex Trojan.GenAsa!wXA5tB775+I
Ikarus Trojan.Win32.Koutodoor
Fortinet W32/Koutodoor.D!tr.bdr
AVG Win32:Caxnet [Trj]
DeepInstinct MALICIOUS
CrowdStrike win/malicious_confidence_100% (W)

How to remove Trojan:Win32/Koutodoor.F?

  • 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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