Categories: Malware

About “BV:CoinHelper-B [Miner]” infection

The BV:CoinHelper-B [Miner] 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 BV:CoinHelper-B [Miner] virus can do?

  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • Executed a command line with /C or /R argument to terminate command shell on completion which can be used to hide execution
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • Creates RWX memory
  • Dynamic (imported) function loading detected
  • Drops a binary and executes it
  • The binary likely contains encrypted or compressed data.
  • Authenticode signature is invalid
  • Uses Windows utilities for basic functionality
  • Uses Windows utilities for basic functionality
  • Collects and encrypts information about the computer likely to send to C2 server

How to determine BV:CoinHelper-B [Miner]?


File Info:

name: 5B4E69A7D63F4BF3977E.mlwpath: /opt/CAPEv2/storage/binaries/a7897725691bd95e0cd7c58a487c0bf925da467dffc814b9b9742b8f21e86eebcrc32: 4A98B8B5md5: 5b4e69a7d63f4bf3977eb993a69deeb4sha1: acd625303eefea7089dc06ee6749ba42968fd1aesha256: a7897725691bd95e0cd7c58a487c0bf925da467dffc814b9b9742b8f21e86eebsha512: 43f3d67dea69b4fbe1fc43506df5195c4217c9f481d6b4caed029322436164cc1180ef5bd48740277592c89c13111e51fa0db0b21bd7ef0c3092f7022bd28891ssdeep: 393216:QteUGsRpwnP7CdGcUaLzBVCNRd1RFElTu4SWoF0xWzNOyPme:6G2wP7OUaaLbSlTMr4Wzwtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T190F6330273D2D076FFA79273DF5AB6241ABE6D200533901F13985EBAB9305A1223D767sha3_384: 32d0e54dc3a14efd04848fe4b3e35079832a9fac4b20b9aaf3e9af871b873744801b21c1f3024d7d85a387326cd026e1ep_bytes: e8c8d00000e97ffeffffcccccccccccctimestamp: 2021-05-19 11:12:29

Version Info:

Translation: 0x0809 0x04b0

BV:CoinHelper-B [Miner] also known as:

Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
MicroWorld-eScan AIT:Trojan.Nymeria.1546
FireEye Generic.mg.5b4e69a7d63f4bf3
CAT-QuickHeal Trojan.AutoIt.MineDropper.C
McAfee Artemis!5B4E69A7D63F
Cylance Unsafe
K7AntiVirus Trojan ( 005411551 )
Alibaba TrojanDropper:AutoIt/Nymeria.6950d3e6
K7GW Trojan ( 005411551 )
Cybereason malicious.7d63f4
Symantec PUA.AutoItDropper
ESET-NOD32 a variant of Win32/TrojanDropper.Autoit.TL
APEX Malicious
Paloalto generic.ml
Kaspersky UDS:DangerousObject.Multi.Generic
BitDefender AIT:Trojan.Nymeria.1546
Avast BV:CoinHelper-B [Miner]
Ad-Aware AIT:Trojan.Nymeria.1546
Sophos Mal/Generic-S
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Generic.wc
Emsisoft AIT:Trojan.Nymeria.1546 (B)
MaxSecure Trojan.Malware.300983.susgen
Avira DR/AutoIt.Gen
Microsoft TrojanDropper:AutoIt/Nymeria.AR!MTB
GData Win32.Trojan.BSE.196N20V
Cynet Malicious (score: 99)
AhnLab-V3 Dropper/AU3.Miner.S1098
BitDefenderTheta AI:Packer.BC75735117
ALYac AIT:Trojan.Nymeria.1546
MAX malware (ai score=80)
VBA32 TrojanDropper.AutoIt.Nymeria
Malwarebytes Malware.AI.1886165987
Rising Trojan.CoinMiner/Autoit!1.C937 (CLASSIC)
Ikarus Trojan-Dropper.Win32.Autoit
eGambit Unsafe.AI_Score_93%
Fortinet AutoIt/CoinMiner.TL!tr
AVG BV:CoinHelper-B [Miner]

How to remove BV:CoinHelper-B [Miner]?

  • 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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