Backdoor

Should I remove “Backdoor.Quasar”?

Malware Removal

The Backdoor.Quasar 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.

GridinSoft Anti-Malware

Gridinsoft Anti-Malware

Removing PC viruses manually may take hours and may damage your PC in the process. We recommend using GridinSoft Anti-Malware for virus removal. Allows to complete scan and cure your PC during the trial period.
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What Backdoor.Quasar virus can do?

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

Related domains:

z.whorecord.xyz
a.tomx.xyz

How to determine Backdoor.Quasar?


File Info:

crc32: 966150FB
md5: e783b4c0cd06954cbd8338a780b6673b
name: scv.exe
sha1: 9338f216038b92f345c76478fe709fd15351148c
sha256: b8f0fe9beda9d276a74716e3cebf41b0b39322b084839c12d0d7d6a4fde8a2a2
sha512: 87f393b9906ac934a67c454dfad8fbf8c49d01e2644e6bffe2becd099e1d9377fc638118da031a13fbf0b2710b6fe9cf8636ee2966dd3540f9fc22b3c4fbcd9e
ssdeep: 12288:RFt4nd6TRX7rBEP9nTX18j1n9zy3HbJug4mc9ShXG9Lm+YEadf5FVF:R0dwRrOz1y9zMHc9S9YSf
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright: xa92019 BitTorrent, Inc. All Rights Reserved.
Assembly Version: 3.5.5.100
InternalName: scv.exe
FileVersion: 3.5.5.100
CompanyName: BitTorrent Inc.
Comments: xb5Torrent
ProductName: BitTorrent Inc.
ProductVersion: 3.5.5.100
FileDescription: BitTorrent Inc.
OriginalFilename: scv.exe

Backdoor.Quasar also known as:

MicroWorld-eScanGen:Variant.Razy.597611
FireEyeGeneric.mg.e783b4c0cd06954c
CAT-QuickHealTrojan.MSIL
ALYacGen:Variant.Razy.597611
VIPRETrojan.Win32.Generic!BT
AegisLabTrojan.MSIL.APosT.4!c
SangforMalware
K7AntiVirusTrojan ( 0055e42a1 )
BitDefenderGen:Variant.Razy.597611
K7GWTrojan ( 0055e42a1 )
CrowdStrikewin/malicious_confidence_100% (W)
TrendMicroTROJ_GEN.R002C0PAD20
BitDefenderThetaGen:NN.ZemsilF.34084.Im0@aiyg74i
SymantecTrojan.Gen.MBT
ESET-NOD32a variant of MSIL/GenKryptik.EBHH
APEXMalicious
AvastWin32:RATX-gen [Trj]
GDataGen:Variant.Razy.597611
KasperskyHEUR:Trojan.MSIL.APosT.gen
AlibabaTrojan:Win32/runner.ali1000123
NANO-AntivirusTrojan.Win32.GenKryptik.gwhsfz
RisingTrojan.GenKryptik!8.AA55 (CLOUD)
Ad-AwareGen:Variant.Razy.597611
SophosMal/Generic-S
ComodoMalware@#1u68tbe73y37e
F-SecureHeuristic.HEUR/AGEN.1026828
DrWebTrojan.DownLoader32.46540
ZillyaTrojan.GenKryptik.Win32.41353
Invinceaheuristic
McAfee-GW-EditionBehavesLike.Win32.Generic.hc
Trapminemalicious.high.ml.score
EmsisoftGen:Variant.Razy.597611 (B)
IkarusTrojan.MSIL.Krypt
CyrenW32/Trojan.AGLB-7762
AviraHEUR/AGEN.1026828
MAXmalware (ai score=85)
Endgamemalicious (high confidence)
ArcabitTrojan.Razy.D91E6B
AhnLab-V3Malware/Win32.RL_Generic.C3940089
ZoneAlarmHEUR:Trojan.MSIL.APosT.gen
MicrosoftTrojan:Win32/Tiggre!rfn
Acronissuspicious
McAfeeRDN/Generic.rp
VBA32TScope.Trojan.MSIL
MalwarebytesBackdoor.Quasar
PandaTrj/GdSda.A
TrendMicro-HouseCallTROJ_GEN.R002C0PAD20
TencentMsil.Trojan.Apost.Akyl
SentinelOneDFI – Malicious PE
eGambitUnsafe.AI_Score_100%
FortinetMSIL/APosT.EBHH!tr
AVGWin32:RATX-gen [Trj]
Cybereasonmalicious.6038b9
Paloaltogeneric.ml
Qihoo-360Generic/Trojan.26c

How to remove Backdoor.Quasar?

Backdoor.Quasar 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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