Trojan:MSIL/AgentTesla.KAAY!MTB Virus Removal

Spectating the Trojan:MSIL/AgentTesla.KAAY!MTB detection means that your computer is in big danger. This computer virus can correctly be named as ransomware – type of malware which encrypts your files and forces you to pay for their decryption. Removing it requires some peculiar steps that must be taken as soon as possible.

Trojan:MSIL/AgentTesla.KAAY!MTB detection is a malware detection you can spectate in your system. It often appears after the provoking activities on your computer – opening the dubious e-mail messages, clicking the advertisement in the Internet or mounting the program from dubious sources. From the moment it appears, you have a short time to take action until it begins its malicious action. And be sure – it is much better not to await these malicious effects.

What is Trojan:MSIL/AgentTesla.KAAY!MTB virus?

Trojan:MSIL/AgentTesla.KAAY!MTB is ransomware-type malware. It looks for the documents on your computer, ciphers it, and then asks you to pay the ransom for receiving the decryption key. Besides making your documents locked, this virus also does a ton of harm to your system. It alters the networking setups in order to avoid you from looking for the removal guides or downloading the anti-malware program. In rare cases, Trojan:MSIL/AgentTesla.KAAY!MTB can even block the setup of anti-malware programs.

Trojan:MSIL/AgentTesla.KAAY!MTB Summary

In summary, Trojan:MSIL/AgentTesla.KAAY!MTB ransomware activities in the infected PC are next:

  • CAPE extracted potentially suspicious content;
  • The binary likely contains encrypted or compressed data.;
  • Authenticode signature is invalid;
  • Encrypting the files kept on the victim’s drive — so the victim cannot check these documents;
  • Blocking the launching of .exe files of anti-malware programs
  • Blocking the launching of installation files of anti-virus programs

Ransomware has actually been a major problem for the last 4 years. It is challenging to imagine a more dangerous malware for both individual users and companies. The algorithms used in Trojan:MSIL/AgentTesla.KAAY!MTB (usually, RHA-1028 or AES-256) are not hackable – with minor exclusions. To hack it with a brute force, you need to have more time than our galaxy already exists, and possibly will exist. However, that malware does not do all these terrible things instantly – it can require up to several hours to cipher all of your files. Hence, seeing the Trojan:MSIL/AgentTesla.KAAY!MTB detection is a clear signal that you should start the removal process.

Where did I get the Trojan:MSIL/AgentTesla.KAAY!MTB?

General ways of Trojan:MSIL/AgentTesla.KAAY!MTB injection are standard for all other ransomware variants. Those are one-day landing sites where victims are offered to download the free software, so-called bait emails and hacktools. Bait e-mails are a quite new method in malware spreading – you receive the e-mail that imitates some regular notifications about deliveries or bank service conditions changes. Within the e-mail, there is a malicious MS Office file, or a link which opens the exploit landing site.

Malicious email spam

Malicious email message. This one tricks you to open the phishing website.

Avoiding it looks pretty uncomplicated, however, still requires tons of attention. Malware can hide in various spots, and it is far better to stop it even before it invades your system than to trust in an anti-malware program. Common cybersecurity knowledge is just an essential thing in the modern world, even if your relationship with a PC stays on YouTube videos. That can keep you a great deal of money and time which you would spend while trying to find a fix guide.

Trojan:MSIL/AgentTesla.KAAY!MTB malware technical details

File Info:

name: FBB4A0492C72594DB184.mlwpath: /opt/CAPEv2/storage/binaries/cfddd10c5c0b92b1d3425b87d8d794903ffa8c9bf98a3ad27f0962462fd6436ecrc32: BEE04640md5: fbb4a0492c72594db184bd011e1d0088sha1: 1697176805458b5cce4b550c31b050c62a006c49sha256: cfddd10c5c0b92b1d3425b87d8d794903ffa8c9bf98a3ad27f0962462fd6436esha512: 8592f5b057c5ff88d9b113e25b5ec361f3ab8a52a8b791b141b09328077565182374869810a18ebdd6305c6383fb90308efa9e7ca558c067cad1131f4f5edc20ssdeep: 12288:GAfDuHOXSBQwap/c/JEzpqMqIdhSDnUygDtexvYHRBSQp87eIX1fGD:GgATaZVtS7UygAB2Dtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1EC259DD1B15098DFEC6B45F2AD2A9D3020A3BE9D51A4400C55AB7B1B36F7382609FE1Fsha3_384: 8856aecf0acc40b66ce0a3cd65d30a46b324aac501dabca384fdc5d2ba7013aac6d52258395765bfa265ffa2a7c3fe78ep_bytes: ff250020001100000000000000000000timestamp: 2023-09-18 07:00:49

Version Info:

Translation: 0x0000 0x04b0Comments: UtilsCompanyName: MySilFileDescription: MessageBoxExLibFileVersion: 1.2InternalName: EXkD.exeLegalCopyright: OriginalFilename: EXkD.exeProductName: MessageBox EditorProductVersion: 1.2Assembly Version: 1.4.0.0

Trojan:MSIL/AgentTesla.KAAY!MTB also known as:

Bkav W32.AIDetectMalware.CS
Lionic Trojan.Win32.Agensla.4!c
MicroWorld-eScan Gen:Variant.Ransom.Loki.24223
CAT-QuickHeal Trojan.AgentteslaFC.S31521420
Skyhigh Artemis!Trojan
McAfee Artemis!FBB4A0492C72
Cylance unsafe
Sangfor Infostealer.Msil.AgentTesla.Vngf
K7AntiVirus Trojan ( 005ab5c61 )
BitDefender Gen:Variant.Ransom.Loki.24223
K7GW Trojan ( 005ab5c61 )
Arcabit Trojan.Ransom.Loki.D5E9F
VirIT Trojan.Win32.MSIL_Heur.A
Symantec Scr.Malcode!gdn34
Elastic malicious (high confidence)
ESET-NOD32 a variant of MSIL/Kryptik.AJQQ
Cynet Malicious (score: 100)
APEX Malicious
Kaspersky HEUR:Trojan-PSW.MSIL.Agensla.gen
Alibaba TrojanPSW:MSIL/AgentTesla.d673a0d7
NANO-Antivirus Trojan.Win32.Agensla.kbhpoa
Avast Win32:PWSX-gen [Trj]
Tencent Malware.Win32.Gencirc.13efad74
Emsisoft Gen:Variant.Ransom.Loki.24223 (B)
F-Secure Trojan.TR/AD.GenSteal.abtdt
DrWeb Trojan.DownLoaderNET.710
Zillya Trojan.GenKryptik.Win32.246213
Trapmine malicious.moderate.ml.score
FireEye Generic.mg.fbb4a0492c72594d
Sophos Troj/Krypt-ABH
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.PSW.MSIL.eqfa
Webroot W32.Trojan.Gen
Varist W32/MSIL_Troj.CVH.gen!Eldorado
Avira TR/AD.GenSteal.abtdt
MAX malware (ai score=85)
Antiy-AVL Trojan/MSIL.GenKryptik
Xcitium Malware@#3hvmoamtp0f3l
Microsoft Trojan:MSIL/AgentTesla.KAAY!MTB
ZoneAlarm HEUR:Trojan-PSW.MSIL.Agensla.gen
GData Gen:Variant.Ransom.Loki.24223
Google Detected
AhnLab-V3 Trojan/Win.PWSX-gen.C5489561
ALYac Gen:Variant.Ransom.Loki.24223
VBA32 TScope.Trojan.MSIL
Malwarebytes Generic.Malware.AI.DDS
Panda Trj/Chgt.AD
Rising Malware.Obfus/[email protected] (RDM.MSIL2:37KLhUci9hIwd4qmOhlKVQ)
Yandex Trojan.Igent.b0Sm5k.1
Ikarus Trojan.MSIL.Inject
MaxSecure Trojan.Malware.74499699.susgen
Fortinet MSIL/Kryptik.AFFR!tr
AVG Win32:PWSX-gen [Trj]
DeepInstinct MALICIOUS
CrowdStrike win/malicious_confidence_100% (W)

How to remove Trojan:MSIL/AgentTesla.KAAY!MTB?

About the author

Robert Bailey

Security engineer focused on malware behavior, removal workflows, and Windows hardening. Robert reviews threat articles for practical accuracy, checking detection names, symptoms, and cleanup steps before publication.

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