About “VirTool:MSIL/Obfuscator.AZ” infection

The VirTool:MSIL/Obfuscator.AZ 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 VirTool:MSIL/Obfuscator.AZ virus can do?

The binary likely contains encrypted or compressed data.
Network activity detected but not expressed in API logs

How to determine VirTool:MSIL/Obfuscator.AZ?


File Info:
crc32: 8E3A3C60
md5: 62aa79c2aa1e9d9944b91def363ce6b3
name: 62AA79C2AA1E9D9944B91DEF363CE6B3.mlw
sha1: bd3f25599bb8de685381f82a63d7aa825bcc1c77
sha256: 1e429e04401f8c445295db234231511addeb3ad015ca5b407f0a9c630eb94c03
sha512: 76e54dd2aee78fd3ef688d68254c355bf122f71cb13047b0f197767a8b4fe4f457ac7b2ba50b463bdb1f40dcc8dd6cd0aaab154dad3690d540b17e213e631763
ssdeep: 6144:278IYq05JAHx0/WxhP9h0R6MIzSLi/KsAFE8qU2:kN05JA0/xR3I2LiytP2
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:
Translation: 0x0000 0x04b0
LegalCopyright: Copyright (C) 2014 Valve Corporation
Assembly Version: 0.0.0.0
InternalName: Steam.exe
FileVersion: 0.0.0.0
CompanyName: Valve Corporation
Comments: Steam Client WebHelper
ProductName: Steam Guard
ProductVersion: 0.0.0.0
FileDescription: Steam Client WebHelper
OriginalFilename: Steam.exe

VirTool:MSIL/Obfuscator.AZ also known as:

K7AntiVirus	Trojan ( 004e305f1 )
Lionic	Trojan.Win32.Generic.ly4v
Elastic	malicious (high confidence)
DrWeb	Trojan.DownLoader11.29355
Cynet	Malicious (score: 100)
ALYac	Trojan.GenericKD.41908359
Cylance	Unsafe
Zillya	Trojan.Generic.Win32.81963
CrowdStrike	win/malicious_confidence_90% (D)
Alibaba	Trojan:MSIL/Injector.9ff2869f
K7GW	Trojan ( 004e305f1 )
Cybereason	malicious.2aa1e9
Cyren	W32/S-4a2de5be!Eldorado
Symantec	ML.Attribute.HighConfidence
ESET-NOD32	a variant of MSIL/Injector.RF
APEX	Malicious
Avast	MSIL:Crypt-HR [Trj]
Kaspersky	HEUR:Trojan.Win32.Generic
BitDefender	Trojan.GenericKD.41908359
NANO-Antivirus	Trojan.Win32.Dwn.dhxxxe
MicroWorld-eScan	Trojan.GenericKD.41908359
Tencent	Win32.Trojan.Generic.Wogg
Ad-Aware	Trojan.GenericKD.41908359
Sophos	ML/PE-A + Troj/MSILInj-GE
Comodo	Malware@#1l00fpvf8wje1
F-Secure	Trojan.TR/Dropper.Gen
BitDefenderTheta	Gen:NN.ZemsilF.34266.pm1@aqikpQj
VIPRE	Trojan.Win32.Generic!BT
McAfee-GW-Edition	BehavesLike.Win32.Generic.dc
FireEye	Generic.mg.62aa79c2aa1e9d99
Emsisoft	Trojan.GenericKD.41908359 (B)
SentinelOne	Static AI – Malicious PE
Jiangmin	Trojan.Generic.eowuu
Avira	TR/Dropper.Gen
Antiy-AVL	Trojan/Win32.AGeneric
Kingsoft	Win32.Troj.Undef.(kcloud)
Microsoft	VirTool:MSIL/Obfuscator.AZ
Arcabit	Trojan.Generic.D27F7887
GData	Trojan.GenericKD.41908359
AhnLab-V3	Trojan/Win32.Gen
McAfee	PWSZbot-FAFY!62AA79C2AA1E
MAX	malware (ai score=100)
VBA32	Trojan.Downloader
Malwarebytes	Generic.Malware/Suspicious
Panda	Trj/CI.A
Yandex	Trojan.Agent!LB76tcb9+vE
Ikarus	Trojan.MSIL.Injector
MaxSecure	Trojan.Malware.300983.susgen
Fortinet	MSIL/Injector.RF!tr
AVG	MSIL:Crypt-HR [Trj]
Paloalto	generic.ml

How to remove VirTool:MSIL/Obfuscator.AZ?

VirTool:MSIL/Obfuscator.AZ removal tool

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.

About the author

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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