Should I remove “Backdoor.Win32.Remcos.nun”?

The Backdoor.Win32.Remcos.nun 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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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.Win32.Remcos.nun virus can do?

Executable code extraction
Creates RWX memory
Network activity detected but not expressed in API logs
Anomalous binary characteristics

How to determine Backdoor.Win32.Remcos.nun?


File Info:
crc32: 99291B23
md5: 77d12e2ca690ed05dd8a2aa06a809a45
name: nass.exe
sha1: 6b4ae7905b3f51c19b1de72287d6b0a88f66f8eb
sha256: 33414949d9094cd4837b765b9164d860ad6785f06de72cd0cbc99ddef8de867f
sha512: 1405ab34ece8c74609e995464314b538da1d1b1119ae12e7e68e6bfb1de4fb83fb8e4925e5bcec71ce12d63dd91ce42f8e900a60757e457b1bc6718143c159a4
ssdeep: 768:f9B+L4dCZxdXtdMjPuauAXH8HI+J8y5015mnI256aACqqcdKMqHpXawifG:VH4ZxyBbNEP+15oI2Ua1BB5Xa3+
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:
Translation: 0x0409 0x04b0
InternalName: Stumpha7
FileVersion: 1.00
CompanyName: SMARt
Comments: SMARt
ProductName: Nonspeciousver
ProductVersion: 1.00
FileDescription: Velforsyned4
OriginalFilename: Stumpha7.exe

Backdoor.Win32.Remcos.nun also known as:

MicroWorld-eScan	Trojan.GenericKD.33562134
McAfee	Artemis!77D12E2CA690
ALYac	Trojan.Downloader.Agent
Malwarebytes	Trojan.GuLoader.VB
BitDefender	Trojan.GenericKD.33562134
K7GW	Trojan ( 005634f71 )
Cybereason	malicious.05b3f5
TrendMicro	Trojan.Win32.WACATAC.THCBDBO
F-Prot	W32/Downloader.FI.gen!Eldorado
APEX	Malicious
Avast	Win32:TrojanX-gen [Trj]
GData	Trojan.GenericKD.33562134
Kaspersky	Backdoor.Win32.Remcos.nun
Alibaba	Trojan:Win32/vbcrypt.ali2000008
AegisLab	Trojan.Win32.Remcos.m!c
Tencent	Win32.Backdoor.Remcos.Akfh
Endgame	malicious (high confidence)
Sophos	Mal/FareitVB-W
DrWeb	Trojan.DownLoader33.20924
McAfee-GW-Edition	BehavesLike.Win32.Trojan.cz
Trapmine	malicious.high.ml.score
Emsisoft	Trojan.GenericKD.33562134 (B)
Ikarus	Trojan.VB.Crypt
Cyren	W32/Downloader.FI.gen!Eldorado
Arcabit	Trojan.Generic.D2001E16
ZoneAlarm	Backdoor.Win32.Remcos.nun
Microsoft	Trojan:Win32/Occamy.C
AhnLab-V3	Trojan/Win32.Fareit.R329896
Acronis	suspicious
Ad-Aware	Trojan.GenericKD.33562134
Panda	Trj/Genetic.gen
ESET-NOD32	a variant of Win32/Injector.ELFI
TrendMicro-HouseCall	Trojan.Win32.WACATAC.THCBDBO
Rising	Backdoor.Remcos!8.B89E (CLOUD)
Fortinet	W32/ELFI!tr
BitDefenderTheta	Gen:NN.ZevbaF.34104.hm0@a0jEohfi
AVG	Win32:TrojanX-gen [Trj]
CrowdStrike	win/malicious_confidence_90% (W)
Qihoo-360	HEUR/QVM03.0.1EA1.Malware.Gen

How to remove Backdoor.Win32.Remcos.nun?

Backdoor.Win32.Remcos.nun 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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