Backdoor

Backdoor:MSIL/Quasar!atmn removal guide

Malware Removal

The Backdoor:MSIL/Quasar!atmn 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 Backdoor:MSIL/Quasar!atmn virus can do?

  • Authenticode signature is invalid
  • CAPE detected the QuasarStealer malware family

How to determine Backdoor:MSIL/Quasar!atmn?



File Info:

name: F480E29D1451AFF9A2DA.mlw
path: /opt/CAPEv2/storage/binaries/585d38e15b1d6cd2cb341b40c04e36dde152d4b58eb0c360d14468dcc43f015e
crc32: FBBDC84A
md5: f480e29d1451aff9a2dabb7ad83521b7
sha1: 4db4b1de7087b5cb5dee413b43fa8a490ed83ecc
sha256: 585d38e15b1d6cd2cb341b40c04e36dde152d4b58eb0c360d14468dcc43f015e
sha512: cc3f100b95d064e4b61bca31ddc65d5d8a3105e8cc25786a73b236c7281f090680e16695c45a9f7b8c88b16b9557e72a54b6a05cd8394bc8eb71cd8e15d07215
ssdeep: 49152:zvrI22SsaNYfdPBldt698dBcjHmFRm6XbR3LoGddtTHHB72eh2NT:zvU22SsaNYfdPBldt6+dBcjHmFRm6p
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T12CE56B143BF85E27E1BBE27795B0041267F0FC1AF3A3EB0B6581677A1C53B5098426A7
sha3_384: 58aae0c52b47e37c8f4ff40fe762a34cde99ab6bb47c855a4ae8fc24fb776584957237053d0974c35e0bb74ad159c549
ep_bytes: ff250020400000000000000000000000
timestamp: 2023-03-12 16:16:39


Version Info:

Translation: 0x0000 0x04b0
Comments: 
CompanyName: 
FileDescription: 
FileVersion: 1.2.3.4
InternalName: WindowsUpdater.exe
LegalCopyright: 
LegalTrademarks: 
OriginalFilename: WindowsUpdater.exe
ProductName: WindowsUpdater.exe
ProductVersion: 1.3.0.0
Assembly Version: 1.3.0.0

Backdoor:MSIL/Quasar!atmn also known as:

Elasticmalicious (high confidence)
MicroWorld-eScanGeneric.MSIL.PasswordStealerA.A2F8229F
ClamAVWin.Malware.Generic-9883083-0
FireEyeGeneric.mg.f480e29d1451aff9
CAT-QuickHealTrojan.Generic.TRFH927
McAfeeGenericRXLX-DS!F480E29D1451
MalwarebytesGeneric.Trojan.MSIL.DDS
SangforTrojan.Win32.Save.a
Cybereasonmalicious.d1451a
BitDefenderThetaGen:NN.ZemsilF.36196.hp0@aOxYVei
VirITTrojan.Win32.MSIL.MJ
CyrenW32/MSIL_Troj.BTX.gen!Eldorado
SymantecML.Attribute.HighConfidence
ESET-NOD32a variant of MSIL/Agent.CLQ
APEXMalicious
CynetMalicious (score: 100)
KasperskyHEUR:Trojan.MSIL.Quasar.gen
BitDefenderGeneric.MSIL.PasswordStealerA.A2F8229F
AvastMSIL:Quasar-A [Rat]
TencentTrojan.MSIL.Quasar.ka
SophosML/PE-A
F-SecureHeuristic.HEUR/AGEN.1307453
DrWebBackDoor.QuasarNET.3
VIPREGeneric.MSIL.PasswordStealerA.A2F8229F
TrendMicroTROJ_GEN.R014C0DEN23
McAfee-GW-EditionBehavesLike.Win32.Generic.wh
EmsisoftGeneric.MSIL.PasswordStealerA.A2F8229F (B)
IkarusTrojan-Spy.Agent
GDataMSIL.Backdoor.Quasar.A
JiangminTrojan.MSIL.aogzw
AviraHEUR/AGEN.1307453
Antiy-AVLTrojan/MSIL.Quasar
ArcabitGeneric.MSIL.PasswordStealerA.A2F8229F
ZoneAlarmHEUR:Trojan.MSIL.Quasar.gen
MicrosoftBackdoor:MSIL/Quasar!atmn
GoogleDetected
AhnLab-V3Backdoor/Win32.QuasarRAT.R341693
Acronissuspicious
ALYacGeneric.MSIL.PasswordStealerA.A2F8229F
MAXmalware (ai score=86)
VBA32Trojan.MSIL.Quasar.Heur
Cylanceunsafe
TrendMicro-HouseCallTROJ_GEN.R014C0DEN23
RisingSpyware.Downeks!8.E248 (TFE:dGZlOg2S81xkxScsOg)
SentinelOneStatic AI – Malicious PE
MaxSecureTrojan.Malware.300983.susgen
FortinetMSIL/Agent.BXX!tr
AVGMSIL:Quasar-A [Rat]
DeepInstinctMALICIOUS
CrowdStrikewin/malicious_confidence_100% (W)

How to remove Backdoor:MSIL/Quasar!atmn?

Backdoor:MSIL/Quasar!atmn 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.

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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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