Categories: Backdoor

About “Backdoor:MSIL/WebShell.AI!MTB” infection

The Backdoor:MSIL/WebShell.AI!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 Backdoor:MSIL/WebShell.AI!MTB virus can do?

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

How to determine Backdoor:MSIL/WebShell.AI!MTB?


File Info:

name: BB41F919583E31E2203E.mlwpath: /opt/CAPEv2/storage/binaries/43514c4b587945d5780fef0a316480ad08f0ff9bca79bb17b683908ea5611496crc32: C810FC65md5: bb41f919583e31e2203e0b3051021ab9sha1: c5367ad5ab2d657d0ee0f262509913bd3f41656esha256: 43514c4b587945d5780fef0a316480ad08f0ff9bca79bb17b683908ea5611496sha512: 4ca5aec9797a96f0034fef39599d1b1701ba2b53261b63f67e04716f1fd707c3b7a0e892f5b0bae6bd7fec3f421ac84153d9311a3dcc50905ab7a90963c0af8dssdeep: 192:OUpU1U0D0lq1hGHbggSzcfVasYtbiY5XwbM4bU8b:3U1KQLG7gdzcfVasYt5Wtype: PE32 executable (DLL) (GUI) Intel 80386, for MS Windowstlsh: T1D332E85BB7D8CA23D97E477C2A7286140376D603A023FB276FC850A89FD37618452B97sha3_384: 23d7f787b930cfcc8fc52729747bdb4ca44fdf1747d7c788a926e8aeb9eb04da88c3126a5bb4ea5cfee3319715860802ep_bytes: ff250020001000000000000000000000timestamp: 2024-02-22 19:00:48

Version Info:

0: [No Data]

Backdoor:MSIL/WebShell.AI!MTB also known as:

Bkav W32.AIDetectMalware.CS
DrWeb BackDoor.WebshellNET.5
MicroWorld-eScan Trojan.GenericKDZ.104945
ClamAV Win.Packed.Webshell-10014509-0
Skyhigh BehavesLike.Win32.Infected.lm
McAfee RDN/Generic BackDoor
Malwarebytes Trojan.WebShell.MSIL
Zillya Trojan.Agent.Win32.3763008
CrowdStrike win/malicious_confidence_70% (D)
Symantec Trojan.Gen.MBT
Elastic malicious (high confidence)
ESET-NOD32 a variant of MSIL/Agent.EJA
APEX Malicious
Kaspersky HEUR:Backdoor.MSIL.WebShell.gen
BitDefender Trojan.GenericKDZ.104945
Avast Win32:BackdoorX-gen [Trj]
Tencent Backdoor.MSIL.WebShell.kk
TACHYON Backdoor/W32.DN-WebShell.11264.L
Emsisoft Trojan.GenericKDZ.104945 (B)
F-Secure Trojan.TR/Agent.ahxcf
VIPRE Trojan.GenericKDZ.104945
TrendMicro TROJ_GEN.R011C0DBO24
FireEye Trojan.GenericKDZ.104945
Ikarus Trojan.MSIL.Agent
GData MSIL.Trojan.PSE.CX8BC6
Google Detected
Avira TR/Agent.ahxcf
Antiy-AVL Trojan[Backdoor]/MSIL.WebShell
Arcabit Trojan.Generic.D199F1
ZoneAlarm HEUR:Backdoor.MSIL.WebShell.gen
Microsoft Backdoor:MSIL/WebShell.AI!MTB
Varist W32/MSIL_Agent.GWE.gen!Eldorado
AhnLab-V3 Backdoor/Win.WEBSHELL.C5545120
VBA32 TScope.Trojan.MSIL
ALYac Trojan.GenericKDZ.104945
MAX malware (ai score=83)
Panda Trj/GdSda.A
TrendMicro-HouseCall TROJ_GEN.R011C0DBO24
SentinelOne Static AI – Malicious PE
MaxSecure Trojan.Malware.121218.susgen
Fortinet MSIL/Agent.EJA!tr
AVG Win32:BackdoorX-gen [Trj]

How to remove Backdoor:MSIL/WebShell.AI!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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