Categories: Trojan

How to remove “Trojan:MSIL/QuasarRAT.L!MTB”?

The Trojan:MSIL/QuasarRAT.L!MTB 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:MSIL/QuasarRAT.L!MTB virus can do?

  • CAPE extracted potentially suspicious content
  • .NET file is packed/obfuscated with Confuser
  • The binary likely contains encrypted or compressed data.
  • Authenticode signature is invalid

How to determine Trojan:MSIL/QuasarRAT.L!MTB?


File Info:

name: C4F60FA3819939AC717B.mlwpath: /opt/CAPEv2/storage/binaries/0090b424154416c84472248eec8250d5fea5866f6a2dd03bb5b4dc35d9685dc9crc32: E2BBA257md5: c4f60fa3819939ac717bf5658ed3af00sha1: 303fd7e9ce86e43b7e41a66483d101ae5dc4de52sha256: 0090b424154416c84472248eec8250d5fea5866f6a2dd03bb5b4dc35d9685dc9sha512: 8862d80e8e8869c38cca3e281e87c33f6cbf39a8e130443cb228717138279a34f23166c4696d295017a0cb1cf350ff9363e074840687ff8613f6f0b014bef68fssdeep: 1536:zu2AXE7b26gGReIwjHnvh5ocXCS7e6Y/sWqBBjmpBujqaV76TVilxYockdP35poT:K36PRtwDvnooCS7eRqB0UVEVilxtVnbStype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T11083F210EF8DA963D8BD597D49535C0486B7E23281E3CF8BB81A6B984C57BE12426733sha3_384: fce848744b48526b72843aa726fd1f9cce54a889faa0a88ab91db5c5fb28db41841814d88351c0eacb1a936dc7327077ep_bytes: ff250020400000000000000000000000timestamp: 2022-11-20 22:19:55

Version Info:

Translation: 0x0000 0x04b0Comments: Antimalware ServiceCompanyName: MicrosoftFileDescription: Antimalware ServiceFileVersion: 1.0.0.0InternalName: dfgrusedjky.exeLegalCopyright: Copyright Microsoft © 2022LegalTrademarks: OriginalFilename: dfgrusedjky.exeProductName: Antimalware ServiceProductVersion: 1.0.0.0Assembly Version: 1.0.0.0

Trojan:MSIL/QuasarRAT.L!MTB also known as:

Lionic Trojan.Win32.Heracles.4!c
MicroWorld-eScan Gen:Variant.MSILHeracles.42797
FireEye Generic.mg.c4f60fa3819939ac
CAT-QuickHeal Trojan.YakbeexMSIL.ZZ4
McAfee RDN/Generic Downloader.x
Cylance unsafe
Sangfor Suspicious.Win32.Save.a
K7AntiVirus Trojan-Downloader ( 0059ac921 )
Alibaba TrojanSpy:MSIL/Generic.74ac4dc2
K7GW Trojan-Downloader ( 0059ac921 )
Cybereason malicious.9ce86e
Cyren W32/MSIL_Agent.ENP.gen!Eldorado
Symantec ML.Attribute.HighConfidence
Elastic malicious (high confidence)
ESET-NOD32 MSIL/TrojanDownloader.Agent.NZE
APEX Malicious
Cynet Malicious (score: 100)
Kaspersky Trojan-Spy.MSIL.Agent.thky
BitDefender Gen:Variant.MSILHeracles.42797
NANO-Antivirus Trojan.Win32.Mlw.jtxgby
Avast Win32:RATX-gen [Trj]
Tencent Malware.Win32.Gencirc.13b731ae
Emsisoft Gen:Variant.MSILHeracles.42797 (B)
F-Secure Trojan.TR/Dropper.Gen
VIPRE Gen:Variant.MSILHeracles.42797
McAfee-GW-Edition RDN/Generic Downloader.x
Trapmine suspicious.low.ml.score
Sophos Mal/Generic-S
Ikarus PUA.MSIL.Confuser
GData Gen:Variant.MSILHeracles.42797
Avira TR/Dropper.Gen
Antiy-AVL Trojan[Downloader]/MSIL.Agent
Kingsoft malware.kb.c.733
Arcabit Trojan.MSILHeracles.DA72D
ZoneAlarm Trojan-Spy.MSIL.Agent.thky
Microsoft Trojan:MSIL/QuasarRAT.L!MTB
Google Detected
AhnLab-V3 Trojan/Win.RATX-gen.C5242426
BitDefenderTheta Gen:NN.ZemsilF.36738.fm0@a0kDbxj
ALYac Gen:Variant.MSILHeracles.42797
MAX malware (ai score=87)
Malwarebytes Trojan.Downloader
Panda Trj/GdSda.A
Rising Malware.Obfus/MSIL@AI.100 (RDM.MSIL2:ERgfneG2utVnmeZ5wfvZqg)
SentinelOne Static AI – Malicious PE
MaxSecure Trojan.Malware.192398852.susgen
Fortinet MSIL/Agent.NZE!tr.dldr
AVG Win32:RATX-gen [Trj]
DeepInstinct MALICIOUS
CrowdStrike win/malicious_confidence_90% (D)

How to remove Trojan:MSIL/QuasarRAT.L!MTB?

  • 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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