Categories: Malware

Heur.Krypt.4 (B) information

The Heur.Krypt.4 (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 Heur.Krypt.4 (B) 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
  • Drops a binary and executes it
  • The binary likely contains encrypted or compressed data.
  • Authenticode signature is invalid
  • Uses Windows utilities for basic functionality
  • Uses Windows utilities for basic functionality
  • CAPE detected the VirLock malware family
  • Deletes executed files from disk
  • Uses suspicious command line tools or Windows utilities

How to determine Heur.Krypt.4 (B)?


File Info:

name: FA6FFE12618048195E96.mlwpath: /opt/CAPEv2/storage/binaries/06dc412865473b2b714834c598b2a642b5e6a0fa346da552dc38775cc07ff80dcrc32: 02A121DEmd5: fa6ffe12618048195e960b2d38065666sha1: 26e4988b4374cec7492a9492dc47486a22d0eabbsha256: 06dc412865473b2b714834c598b2a642b5e6a0fa346da552dc38775cc07ff80dsha512: 45a271e4f5c0b4d9e9685addb6c8cdd52fea5d54c6785a6696489164ea9aa12255eb4efb54bc9363d50805821717cc7238bb458c8bb9817820e229cf0abffff5ssdeep: 24576:MPeP3KdXmj7T9nf03gDrgQytlOYuGH/VXX:Mmychnf03gDrgpOY5H/5type: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1D565CFFCC58624324B0151B6EEC5E9FA22BA058F37B469D7A75A00E44DE88FB777C409sha3_384: c94508126497963d13dbeefced9638e956ca522a8e5ac61114540e8fa7df600327fd87fb93a16cb8094b48cea96ba694ep_bytes: 8d3d20d348008d3538d148008d0de4d0timestamp: 2022-07-12 09:53:01

Version Info:

0: [No Data]

Heur.Krypt.4 (B) also known as:

Bkav W32.AIDetect.malware1
MicroWorld-eScan Gen:Heur.Krypt.4
ClamAV Win.Virus.Virlock-6332874-0
FireEye Generic.mg.fa6ffe1261804819
CAT-QuickHeal Ransom.PolyRansom.F3
McAfee W32/VirRansom.d
Cylance Unsafe
Zillya Virus.Virlock.Win32.5
Sangfor Suspicious.Win32.Save.a
K7AntiVirus Trojan ( 0052b3dd1 )
K7GW Trojan ( 0052b3dd1 )
Cybereason malicious.261804
Baidu Win32.Virus.Virlock.e
Cyren W32/S-ebf374ab!Eldorado
Symantec W32.Virlock!inf7
Elastic malicious (high confidence)
ESET-NOD32 a variant of Win32/Virlock.AO
APEX Malicious
Cynet Malicious (score: 100)
Kaspersky Virus.Win32.PolyRansom.f
BitDefender Gen:Heur.Krypt.4
NANO-Antivirus Virus.Win32.Virlock.driqkj
Avast Win32:Cryptor
Tencent Virus.Win32.VirLocker.j
Ad-Aware Gen:Heur.Krypt.4
TACHYON Virus/W32.VirRansom.B
Sophos ML/PE-A + W32/VirRnsm-F
Comodo Virus.Win32.VirLock.GA@7lv9go
DrWeb Win32.VirLock.16
VIPRE Gen:Heur.Krypt.4
TrendMicro PE_VIRLOCK.K2
McAfee-GW-Edition BehavesLike.Win32.VirRansom.tc
Trapmine malicious.high.ml.score
Emsisoft Gen:Heur.Krypt.4 (B)
SentinelOne Static AI – Malicious PE
Avira TR/Crypt.ZPACK.Gen
Antiy-AVL Trojan/Generic.ASVirus.2BF
Microsoft Trojan:Win32/Nabucur.AA
Arcabit Trojan.Krypt.4
ViRobot Trojan.Win32.Virlock.Gen.A
ZoneAlarm Virus.Win32.PolyRansom.f
GData Gen:Heur.Krypt.4
Google Detected
AhnLab-V3 Win32/Nabucur.D.X1505
BitDefenderTheta Gen:NN.ZexaF.34646.xrW@aeOELzhi
ALYac Gen:Heur.Krypt.4
MAX malware (ai score=86)
VBA32 Virus.Virlock.gen.01
Malwarebytes Bladabindi.Backdoor.Njrat.DDS
TrendMicro-HouseCall PE_VIRLOCK.K2
Rising Virus.VirLock!1.A08A (CLASSIC)
Yandex Trojan.GenAsa!tUZ+uglRM1c
Ikarus Virus.Win32.Virlock
MaxSecure Virus.PolyRansom.b
Fortinet W32/Virlock.J
AVG Win32:Cryptor
Panda Generic Suspicious
CrowdStrike win/malicious_confidence_100% (D)

How to remove Heur.Krypt.4 (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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