Categories: Trojan

What is “Trojan.Heur.KS.4”?

The Trojan.Heur.KS.4 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 Trojan.Heur.KS.4 virus can do?

  • Executable code extraction
  • Creates RWX memory
  • The binary likely contains encrypted or compressed data.
  • Network activity detected but not expressed in API logs
  • Anomalous binary characteristics

How to determine Trojan.Heur.KS.4?


File Info:

crc32: 1DE80453md5: 31b7c09507f7df91629de93ed0900209name: 31B7C09507F7DF91629DE93ED0900209.mlwsha1: 6d0687dd49dbfbc1b0d96d028a45f1edb652d03bsha256: 978085716378b365ff164919373bc6d21cfa0aa798b913758dd47c2a83e22fd0sha512: 9304d5bd11de2307abf4573b78c340531a812ccb293f906e844828e0e19273cdb4a909914ed3e82caa5fff0717af8bfff03ad195b7f2a5e29b7cfc3c9614bd4cssdeep: 768:Ek7DcTBUiN/TeiZ+VWwBwkXn60L70TLuSn11y9GqP96/Z+biQsmjRolwwerEBLpL:ESY1kX680TaSg96BRQRYygrvhNjtype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan.Heur.KS.4 also known as:

Bkav W32.AIDetect.malware2
Lionic Trojan.Win32.Bifrose.ljiM
Elastic malicious (high confidence)
DrWeb BackDoor.Siggen.26227
ClamAV Win.Trojan.Bifrose-28233
McAfee Generic BackDoor.aab
Cylance Unsafe
Zillya Virus.Bitforse.Win32.1
Sangfor Suspicious.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
Alibaba Backdoor:Win32/Bifrose.866f5dbd
K7GW Trojan ( 700001211 )
Cybereason malicious.507f7d
Cyren W32/Bifrost.W.gen!Eldorado
Symantec Backdoor.Trojan
ESET-NOD32 a variant of Win32/Bifrose.NUQ
Zoner Trojan.Win32.36495
APEX Malicious
Avast Win32:BackDoor-ZR [Trj]
Cynet Malicious (score: 100)
Kaspersky Backdoor.Win32.Bifrose.fxv
BitDefender Gen:Trojan.Heur.KS.4
NANO-Antivirus Trojan.Win32.TrjGen.jfhxu
ViRobot Backdoor.Win32.A.Bifrose.32637.EW
MicroWorld-eScan Gen:Trojan.Heur.KS.4
Tencent Trojan.Win32.Refroso.dejg
Ad-Aware Gen:Trojan.Heur.KS.4
Sophos Mal/Generic-R + Mal/Bifrose-AJ
Comodo Backdoor@#pjscve85mg1l
BitDefenderTheta AI:Packer.4B68629A14
VIPRE Backdoor.Win32.Bifrose.fpba (v)
TrendMicro TROJ_KRYPT.SMUS1
McAfee-GW-Edition BehavesLike.Win32.VirRansom.qc
FireEye Generic.mg.31b7c09507f7df91
Emsisoft Gen:Trojan.Heur.KS.4 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Backdoor/Bifrose.fzf
Webroot W32.Malware.Gen
Avira BDS/Bifrose.cep
Antiy-AVL Trojan/Generic.ASBOL.D94
Microsoft Backdoor:Win32/Bifrose.HM
GData Gen:Trojan.Heur.KS.4
TACHYON Trojan/W32.Refroso.57593.H
AhnLab-V3 Backdoor/Win32.Bifrose.R2880
Acronis suspicious
VBA32 BScope.Backdoor.Bifrose
MAX malware (ai score=99)
Malwarebytes Malware.AI.2020147850
Panda Generic Malware
TrendMicro-HouseCall TROJ_KRYPT.SMUS1
Rising Trojan.Generic@ML.100 (RDML:CEhX/RR9woyYT2XXe5sEbg)
Yandex Trojan.GenAsa!THwNrlFVmEA
Ikarus Backdoor.Win32.Bifrose
MaxSecure Backdoor.W32.Refroso.djjg
Fortinet W32/Generic.AC.1239D!tr
AVG Win32:BackDoor-ZR [Trj]
Paloalto generic.ml

How to remove Trojan.Heur.KS.4?

  • 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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