Categories: Malware

What is “Mal/Fesber-A”?

The Mal/Fesber-A 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 Mal/Fesber-A virus can do?

  • Sample contains Overlay data
  • Authenticode signature is invalid
  • Anomalous binary characteristics

How to determine Mal/Fesber-A?


File Info:

name: CA197CD48B4D264E9AE2.mlwpath: /opt/CAPEv2/storage/binaries/0008e4da0e131117a810dd93989c4df6475ca2123a6ecf714a593ba8a741512ecrc32: 6233F5D5md5: ca197cd48b4d264e9ae251d060440e2dsha1: a451f63761b51acf87d3c7567b6cd94064d8e772sha256: 0008e4da0e131117a810dd93989c4df6475ca2123a6ecf714a593ba8a741512esha512: 652d612eaf140b30f35777f62d1093674bb2d1673760fd174c51e658c68487d3c0deab64b446d3c70b8422ed22b22ee17134cfe205e49c377283f569e9c53ff3ssdeep: 49152:LtqthtqtktqtHtqtVtqtrtqtbtqthtqtHtqtzt:LtqthtqtktqtHtqtVtqtrtqtbtqthtqytype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T163C58E07A3D1E079E0B295741A7557719E36BE305E3AA3CF6760FA8E9C312858F28317sha3_384: c4165a1be1976a513789ff62bc915e07f3d180b270519d74b33fab994692695d4fccf966faf62c942418da92561b4cb1ep_bytes: 6a706898180001e8bf01000033db538btimestamp: 2008-04-13 18:35:51

Version Info:

CompanyName: Microsoft CorporationFileDescription: NotepadFileVersion: 5.1.2600.5512 (xpsp.080413-2105)InternalName: NotepadLegalCopyright: © Microsoft Corporation. All rights reserved.OriginalFilename: NOTEPAD.EXEProductName: Microsoft® Windows® Operating SystemProductVersion: 5.1.2600.5512Translation: 0x0409 0x04b0

Mal/Fesber-A also known as:

Bkav W32.AIDetect.malware1
Lionic Worm.Win32.Fesber.o!c
Elastic malicious (high confidence)
MicroWorld-eScan Trojan.GenericKD.31231822
ClamAV Win.Worm.Yero-1
FireEye Generic.mg.ca197cd48b4d264e
CAT-QuickHeal Worm.Fesber.13050
McAfee Artemis!CA197CD48B4D
Cylance Unsafe
VIPRE Trojan.GenericKD.31231822
Sangfor Trojan.Win32.Save.a
Alibaba Worm:Win32/Fesber.c39c93f8
CrowdStrike win/malicious_confidence_100% (D)
Baidu Win32.Worm.Agent.g
Symantec ML.Attribute.HighConfidence
tehtris Generic.Malware
ESET-NOD32 multiple detections
APEX Malicious
Paloalto generic.ml
Cynet Malicious (score: 100)
Kaspersky Worm.Win32.Fesber.g
BitDefender Trojan.GenericKD.31231822
NANO-Antivirus Trojan.Win32.Fesber.fjhfvl
Avast Win32:Agent-AVCC [Trj]
Tencent Win32.Worm.Fesber.Kzfl
Sophos Mal/Fesber-A
Comodo TrojWare.Win32.Cosmu.Z@2wye6j
DrWeb Win32.HLLW.FSB
TrendMicro WORM_YERO.A
McAfee-GW-Edition BehavesLike.Win32.PWSZbot.vm
Emsisoft Trojan.GenericKD.31231822 (B)
SentinelOne Static AI – Malicious PE
GData Gen:Trojan.Heur.GZ.ieW@b4XkOyk
Avira WORM/Fesber
MAX malware (ai score=80)
Arcabit Trojan.Generic.D1DC8F4E
ZoneAlarm Worm.Win32.Fesber.g
Microsoft Trojan:Win32/Wacatac.B!ml
Google Detected
BitDefenderTheta Gen:NN.ZexaF.34646.Mo3@aiCKqvli
ALYac Gen:Trojan.Heur.GZ.ieW@b4XkOyk
VBA32 Virus.Fsb.1
Malwarebytes Bladabindi.Backdoor.Njrat.DDS
TrendMicro-HouseCall WORM_YERO.A
Rising Worm.Fesber!1.65A8 (CLASSIC)
Yandex Trojan.GenAsa!EKe4anrraVI
Ikarus Worm.Win32.Fesber
MaxSecure Trojan.W32.Fesber.G
Fortinet W32/Fesber.G!worm
AVG Win32:Agent-AVCC [Trj]
Cybereason malicious.48b4d2
Panda Trj/CI.A

How to remove Mal/Fesber-A?

  • 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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