What is “Backdoor.MSIL.WebShell”?

The Backdoor.MSIL.WebShell 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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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.MSIL.WebShell virus can do?

CAPE extracted potentially suspicious content
Authenticode signature is invalid
Anomalous .NET characteristics

How to determine Backdoor.MSIL.WebShell?


File Info:
name: CFF475C7B7E183031EE0.mlw
path: /opt/CAPEv2/storage/binaries/7abeb592dab2918dd9ea8bee0d5d07065c6b4f647363a7a96059295f7439ed18
crc32: DF697263
md5: cff475c7b7e183031ee00269ccef6b61
sha1: 34bad2b131f94daa7b52df18581b0f08e31e9ae0
sha256: 7abeb592dab2918dd9ea8bee0d5d07065c6b4f647363a7a96059295f7439ed18
sha512: 031421b64b7bd7570e69e04a257fe3b78ec819a8c8ef7f3d625da342d99514f4ca31c06a3f0d6dc02e022792c72d5b6975d376b6e8e04e5a1c19de5faf115b26
ssdeep: 96:sOisizjMT3g7QrqVvbhSg1ZLLOSrdZF8B8eTpF:sTMT36IqVvbggnL6SrLiB8eV
type: PE32 executable (DLL) (GUI) Intel 80386, for MS Windows
tlsh: T117C1B7527F84C873CA3ED7394A82A648D331D61A9023EE1F58D8414C99DB7041AADFEA
sha3_384: 7892cc83931b47b7e2e70895aeab4c7aaf46c0233be45bb25b08211bdaeedb2afe9ee67f521808e1faa10596b362352f
ep_bytes: ff250020001000000000000000000000
timestamp: 2024-03-26 06:43:07

Version Info:
0: [No Data]

Backdoor.MSIL.WebShell also known as:

Bkav	W32.AIDetectMalware.CS
Lionic	Trojan.Win32.WebShell.m!c
AVG	Win32:BackdoorX-gen [Trj]
Elastic	malicious (high confidence)
Skyhigh	BehavesLike.Win32.BadFile.xt
McAfee	Artemis!CFF475C7B7E1
Sangfor	Backdoor.Msil.Agent.Vsn3
K7AntiVirus	Trojan ( 005a01e21 )
Alibaba	Backdoor:MSIL/WebShell.5b44ab5a
K7GW	Trojan ( 005a01e21 )
CrowdStrike	win/malicious_confidence_90% (W)
Symantec	Trojan.Gen.MBT
ESET-NOD32	a variant of MSIL/Agent.EJA
Kaspersky	HEUR:Backdoor.MSIL.WebShell.gen
Avast	Win32:BackdoorX-gen [Trj]
Sophos	Mal/Generic-S
F-Secure	Heuristic.HEUR/AGEN.1370515
DrWeb	BackDoor.WebshellNET.7
Ikarus	Trojan.MSIL.Agent
Varist	W32/MSIL_Agent.GTK.gen!Eldorado
Avira	HEUR/AGEN.1370515
Microsoft	Trojan:Win32/Wacatac.B!ml
ZoneAlarm	HEUR:Backdoor.MSIL.WebShell.gen
GData	Win32.Trojan.Agent.4D4V4P
Google	Detected
Cylance	unsafe
TrendMicro-HouseCall	TROJ_GEN.R011H0ACR24
SentinelOne	Static AI – Malicious PE
Fortinet	MSIL/Agent.EJA!tr
DeepInstinct	MALICIOUS
alibabacloud	Trojan:Win/FakeTplus.CZ

How to remove Backdoor.MSIL.WebShell?

Backdoor.MSIL.WebShell 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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