Categories: Malware

Should I remove “Win32/Virlock.J”?

The Win32/Virlock.J 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 Win32/Virlock.J virus can do?

  • Executable code extraction
  • Creates RWX memory
  • Expresses interest in specific running processes
  • A process created a hidden window
  • Drops a binary and executes it
  • The binary likely contains encrypted or compressed data.
  • Uses Windows utilities for basic functionality
  • Checks for the presence of known windows from debuggers and forensic tools
  • A process attempted to delay the analysis task by a long amount of time.
  • Attempts to repeatedly call a single API many times in order to delay analysis time
  • Installs itself for autorun at Windows startup
  • Creates a hidden or system file
  • Likely virus infection of existing system binary
  • Attempts to identify installed AV products by installation directory
  • Checks for the presence of known devices from debuggers and forensic tools
  • Attempts to disable UAC
  • Attempts to modify Explorer settings to prevent file extensions from being displayed
  • Attempts to modify Explorer settings to prevent hidden files from being displayed
  • Uses suspicious command line tools or Windows utilities

How to determine Win32/Virlock.J?


File Info:

crc32: 8E78F2CAmd5: 85eda42ee11f1c6d39f8dbcc9e81efeename: 85EDA42EE11F1C6D39F8DBCC9E81EFEE.mlwsha1: 41162fd80f3a31c239130de8c88b620ee50cd4ddsha256: fbdf7755cb9c10d660f41cef6c9cbb08675e9fcddc3553af05cb2c3b16bc67d7sha512: 7970131b8312d6bf3ae323126abc96b1fd4496ff8b6b307b3379311a3cc6881d4bf2be2120535df270f54a0b628afbe44283ae8ef3de497ce524ecbe738a9a9assdeep: 24576:cW3lmAClQu5kdqpcMnBFsPH744nD00y39cWS2o80DPwxy:cW3lu5FSzPHd9y39cR7Lsytype: MS-DOS executable, MZ for MS-DOS

Version Info:

0: [No Data]

Win32/Virlock.J also known as:

Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 004b6d5e1 )
Elastic malicious (high confidence)
DrWeb Win32.VirLock.16
Cynet Malicious (score: 100)
CAT-QuickHeal Ransom.PolyRansom.F3
ALYac Gen:Variant.Barys.57545
Cylance Unsafe
Zillya Trojan.Virlock.Win32.75795
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_80% (D)
Alibaba Trojan:Win32/Starter.ali2000005
K7GW Trojan ( 004b6d5e1 )
Cybereason malicious.ee11f1
Cyren W32/S-024ada74!Eldorado
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Virlock.J
APEX Malicious
Avast Win32:Malware-gen
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.Barys.57545
MicroWorld-eScan Gen:Variant.Barys.57545
Tencent Virus.Win32.VirLocker.a
Ad-Aware Gen:Variant.Barys.57545
Sophos Mal/Generic-R + W32/VirRnsm-F
Comodo Virus.Win32.VirLock.GA@7lv9go
BitDefenderTheta Gen:NN.ZexaF.34670.enqaayBuUHni
VIPRE Virus.Win32.Nabucur.c (v)
McAfee-GW-Edition BehavesLike.Win32.Backdoor.tc
FireEye Generic.mg.85eda42ee11f1c6d
Emsisoft Gen:Variant.Barys.57545 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Generic.bckoo
Avira TR/Crypt.XPACK.Gen
eGambit Unsafe.AI_Score_99%
Microsoft Ransom:Win32/Genasom
AegisLab Trojan.Win32.Generic.4!c
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Gen:Variant.Barys.57545
AhnLab-V3 Trojan/Win32.PolyRansom.C2017470
Acronis suspicious
McAfee Artemis!85EDA42EE11F
MAX malware (ai score=100)
VBA32 Trojan.Tiggre
Malwarebytes Malware.Heuristic.1003
Panda Trj/Genetic.gen
Rising Malware.FakePIC@CV!1.6AB7 (CLOUD)
Ikarus Worm.Win32.AutoRun
MaxSecure Virus.polyransom.k
Fortinet W32/Virlock.J
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Trojan.Generic.HxIBtdsA

How to remove Win32/Virlock.J?

  • 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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