Categories: Worm

Worm:MSIL/Necast.B removal

The Worm:MSIL/Necast.B 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 Worm:MSIL/Necast.B virus can do?

  • Executable code extraction
  • Creates RWX memory
  • Detected script timer window indicative of sleep style evasion
  • A process attempted to delay the analysis task.
  • Reads data out of its own binary image
  • Drops a binary and executes it
  • The binary likely contains encrypted or compressed data.
  • A scripting utility was executed
  • Uses Windows utilities for basic functionality
  • Sniffs keystrokes
  • Creates a copy of itself
  • Attempts to disable UAC

How to determine Worm:MSIL/Necast.B?


File Info:

crc32: CCBB8058md5: bbb3f1debc36c72f8df997b9c34b465ename: BBB3F1DEBC36C72F8DF997B9C34B465E.mlwsha1: f566e8fbd1e8257ca02f63de7d305c926197a949sha256: 08ba540f3c2aba2d4d18d6a19c497aae1466af72d43b0596af63b4f3d4e4de4bsha512: df5ee35d82dd5f9f1412b5c74a01be410e33f8f8b9a1ba65beedd8819cd626fa3b3745eb9845e46933dd76ad184d73558add33bfae7cafe4be8d9af0e637a1a5ssdeep: 3072:SQd1hgPxw/xySeilgTi+ujWLw/VDBUtqLdzZYH5xtFTbbv4zve+YRH9ub6hWB:S6KZ8xMilgm+u6LQdOZp+YR91hWtype: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0LegalCopyright: Assembly Version: 0.0.0.0InternalName: n.exeFileVersion: 0.0.0.0ProductVersion: 0.0.0.0FileDescription: OriginalFilename: n.exe

Worm:MSIL/Necast.B also known as:

DrWeb Trojan.DownLoader6.7537
Cynet Malicious (score: 99)
ALYac Gen:Variant.MSILKrypt.19
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Cybereason malicious.ebc36c
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of MSIL/Necast.AA
APEX Malicious
Avast MSIL:GenMalicious-EIR [Trj]
ClamAV Win.Trojan.Agent-451137
Kaspersky Trojan-Ransom.Win32.Blocker.hegq
BitDefender Gen:Variant.MSILKrypt.19
NANO-Antivirus Trojan.Win32.IrcBot.dkgdqw
MicroWorld-eScan Gen:Variant.MSILKrypt.19
Tencent Msil.Backdoor.Ircbot.Pitn
Ad-Aware Gen:Variant.MSILKrypt.19
Sophos ML/PE-A + Mal/MsilPKill-C
Comodo Malware@#m3fne2x4q13n
BitDefenderTheta AI:Packer.60A526B01F
VIPRE Trojan.Win32.Generic.pak!cobra
McAfee-GW-Edition BehavesLike.Win32.Generic.ch
FireEye Generic.mg.bbb3f1debc36c72f
Emsisoft Gen:Variant.MSILKrypt.19 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Backdoor/MSIL.qr
Avira TR/Dropper.Gen
eGambit Unsafe.AI_Score_100%
Kingsoft Heur.SSC.2760203.1216.(kcloud)
Microsoft Worm:MSIL/Necast.B
Arcabit Trojan.MSILKrypt.19
AegisLab Trojan.Win32.Generic.lsjW
ZoneAlarm Trojan-Ransom.Win32.Blocker.hegq
GData Gen:Variant.MSILKrypt.19
AhnLab-V3 Backdoor/Win32.IRCBot.R31260
McAfee Artemis!BBB3F1DEBC36
MAX malware (ai score=81)
VBA32 Backdoor.MSIL.IrcBot
Panda Trj/CI.A
Rising Ransom.Blocker!8.12A (CLOUD)
Ikarus Worm.Win32.Msil
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/IRCBot.BA!tr.bdr
AVG MSIL:GenMalicious-EIR [Trj]
Qihoo-360 Win32/Ransom.Blocker.HwMAjR8A

How to remove Worm:MSIL/Necast.B?

  • 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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Paul Valéry

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