Categories: Backdoor

Backdoor:Win32/Knockex.H (file analysis)

The Backdoor:Win32/Knockex.H 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/Knockex.H virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • CAPE extracted potentially suspicious content
  • The binary likely contains encrypted or compressed data.
  • Authenticode signature is invalid
  • Anomalous binary characteristics

How to determine Backdoor:Win32/Knockex.H?


File Info:

name: 255DEDB179602B2B50BD.mlwpath: /opt/CAPEv2/storage/binaries/b298e7a6a79a34b10e3bcf4800002fbb30572c1573e9f72f5978956b1fab9172crc32: E6B5CBEAmd5: 255dedb179602b2b50bdee6f9fa8c7casha1: 175736bbec01154b62f05e67f0c0a549308a499esha256: b298e7a6a79a34b10e3bcf4800002fbb30572c1573e9f72f5978956b1fab9172sha512: 21ea724380fac861ebdaa2b796f75de692b92b2a2616303e48e5b70f789e7debef5db9de8e2624c28018e80658b8e943464b69cbbb5f7ce1dd9258735005fae0ssdeep: 768:LsckR3boVuwz8lnLGToPKsRDP59k1BSfkcd5e3DG3pLRmKzuexlap+f+:8tXwz8NqElRDP5EB0kcdWDGZFdNxl+type: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T19C23F1353243E730E98B19B7FB7781DA17611DE2287223D6869FE0EE12DF1616A0D934sha3_384: b870c65710a33644ec2b544900477870445cd0a7abb1f06d82950415978348da1d634fbe165fe69c74ed32d48d91e5a8ep_bytes: 8d3dfc83400066c1ef1381c7fc8b0000timestamp: 2008-04-27 09:09:42

Version Info:

0: [No Data]

Backdoor:Win32/Knockex.H also known as:

Bkav W32.Common.00B00AE8
Lionic Heuristic.File.Generic.00×1!p
Elastic malicious (high confidence)
DrWeb Trojan.DownLoader.63788
MicroWorld-eScan Trojan.Packed.Gen.1
FireEye Generic.mg.255dedb179602b2b
McAfee Artemis!255DEDB17960
Cylance Unsafe
Zillya Backdoor.Agent.Win32.21720
Sangfor Suspicious.Win32.Save.a
K7AntiVirus Trojan ( 0055e3dd1 )
Alibaba Malware:Win32/km_28310.None
K7GW Trojan ( 0055e3dd1 )
Cybereason malicious.179602
BitDefenderTheta AI:Packer.517E01321D
VirIT Backdoor.Agent.BI
Cyren W32/Backdoor.RVMA-4926
Symantec ML.Attribute.HighConfidence
ESET-NOD32 Win32/Agent.PBE
APEX Malicious
TrendMicro-HouseCall BKDR_AGENT.ABYT
Paloalto generic.ml
ClamAV Win.Trojan.Agent-64291
Kaspersky Backdoor.Win32.Dreamy.gfe
BitDefender Trojan.Packed.Gen.1
NANO-Antivirus Trojan.Win32.Zhelatin.cwgafe
Tencent Win32.Backdoor.Dreamy.Hpsf
Ad-Aware Trojan.Packed.Gen.1
Emsisoft Trojan.Packed.Gen.1 (B)
Comodo Backdoor@#1q7rmcqvga3om
VIPRE Trojan.Packed.Gen.1
TrendMicro BKDR_AGENT.ABYT
McAfee-GW-Edition BehavesLike.Win32.VirRansom.pc
Trapmine malicious.high.ml.score
Sophos ML/PE-A + Mal/EncPk-CG
SentinelOne Static AI – Malicious PE
GData Trojan.Packed.Gen.1
Jiangmin Backdoor/Agent.aucs
Webroot W32.Trojan.Storm.Gen
Google Detected
Avira WORM/Zhelatin.Gen
MAX malware (ai score=100)
Antiy-AVL Trojan/Generic.ASMalwS.3303
Kingsoft Win32.Hack.Dreamy.e.(kcloud)
Arcabit Trojan.Packed.Gen.1
ViRobot Backdoor.Win32.Agent.46080
Microsoft Backdoor:Win32/Knockex.H
Cynet Malicious (score: 100)
Acronis suspicious
VBA32 BScope.Backdoor.Agent
ALYac Trojan.Packed.Gen.1
Malwarebytes Malware.AI.2790084077
Panda Trj/Genetic.gen
Rising Malware.Zbot!8.E95E (TFE:5:RC8VHK0TJCE)
Yandex Trojan.GenAsa!j/6DVyYJtnc
Ikarus Backdoor.Win32.Dreamy
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/PKN.DA!tr
AVG Win32:Tibser [Trj]
Avast Win32:Tibser [Trj]
CrowdStrike win/malicious_confidence_100% (D)

How to remove Backdoor:Win32/Knockex.H?

  • 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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