Categories: Malware

How to remove “Win32/Merond.AC”?

The Win32/Merond.AC 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 Win32/Merond.AC virus can do?

  • Injection (inter-process)
  • Injection (Process Hollowing)
  • Executable code extraction
  • Creates RWX memory
  • Expresses interest in specific running processes
  • Reads data out of its own binary image
  • A process created a hidden window
  • Drops a binary and executes it
  • Unconventionial language used in binary resources: Korean
  • The binary likely contains encrypted or compressed data.
  • Uses Windows utilities for basic functionality
  • Executed a process and injected code into it, probably while unpacking
  • Attempts to stop active services
  • Installs itself for autorun at Windows startup
  • Creates a hidden or system file
  • Attempts to identify installed AV products by installation directory
  • Attempts to identify installed AV products by registry key
  • Attempts to modify proxy settings
  • Operates on local firewall’s policies and settings
  • Attempts to disable UAC
  • Harvests information related to installed mail clients
  • Attempts to modify or disable Security Center warnings

How to determine Win32/Merond.AC?


File Info:

crc32: 5FD025F8md5: 86f80ae2586b5578fb508911195412fbname: 86F80AE2586B5578FB508911195412FB.mlwsha1: 51b0c128ad4f5218a18912a80f5477fd54b82ae1sha256: 8bd06a6d7b3124d3421bb1a9a033367f502c9574764f8c2e2932a854828d7d83sha512: 580c59c1ab127c83021e2445723c35e8f405a79d30beee4381c6113acca63f8b5290ed890df9b1ac4e151801d0b8235a092a3373810e4b5686cadcbc70382eb2ssdeep: 24576:a07M9wBk04p4pbbdVKOzbOn7azGF0Gdr6dZ:r7yw6PWNBVzOnwSWvtype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: (C)Microsoft Corporation. All rights reserved.InternalName: Wextract FileVersion: 6.00.2900.5512 (xpsp.080413-2105)CompanyName: Microsoft CorporationProductName: Microsoft(R) Windows(R) Operating SystemProductVersion: 6.00.2900.5512FileDescription: Win32 Cabinet Self-Extractor OriginalFilename: WEXTRACT.EXE Translation: 0x0412 0x04b0

Win32/Merond.AC also known as:

K7AntiVirus Trojan ( 0055e3991 )
Elastic malicious (high confidence)
DrWeb Win32.HLLW.Autoruner.47592
Cynet Malicious (score: 99)
ALYac Gen:Heur.Mint.Zard.10
Cylance Unsafe
CrowdStrike win/malicious_confidence_60% (D)
Alibaba Worm:Win32/Blocker.1e956fd6
K7GW Trojan ( 0055e3991 )
Cybereason malicious.2586b5
Cyren W32/Risk.BZVO-5878
Symantec W32.Ackantta@mm
ESET-NOD32 a variant of Win32/Merond.AC
APEX Malicious
Avast Win32:Malware-gen
ClamAV Win.Malware.Zard-6950572-0
Kaspersky Trojan-Ransom.Win32.Blocker.fqge
BitDefender Gen:Heur.Mint.Zard.10
NANO-Antivirus Trojan.Win32.Typic.btwih
MicroWorld-eScan Gen:Heur.Mint.Zard.10
Tencent Win32.Trojan.Blocker.Edoa
Ad-Aware Gen:Heur.Mint.Zard.10
Sophos ML/PE-A
Comodo Malware@#9x0b435apr0q
BitDefenderTheta AI:Packer.2B05A29E1F
VIPRE Worm.Win32.Prolaco (v)
TrendMicro WORM_PROLACO.SMA
McAfee-GW-Edition RDN/Generic Dropper.kn
FireEye Generic.mg.86f80ae2586b5578
Emsisoft Gen:Heur.Mint.Zard.10 (B)
SentinelOne Static AI – Suspicious SFX
Jiangmin TrojanDropper.Typic.ph
Webroot W32.Injector.Gen
Avira TR/Dropper.Gen
eGambit Unsafe.AI_Score_70%
Microsoft Worm:Win32/Prolaco.U
Arcabit Trojan.Mint.Zard.10
AegisLab Trojan.Win32.Injector.4!c
GData Win32.Trojan.Prolaco.A
TACHYON Backdoor/W32.Hupigon.924672.W
McAfee Artemis!86F80AE2586B
MAX malware (ai score=100)
VBA32 BScope.Trojan.Wacatac
Malwarebytes Malware.AI.4290381805
Panda Trj/CI.A
TrendMicro-HouseCall WORM_PROLACO.SMA
Rising Ransom.Blocker!8.12A (CLOUD)
Yandex Trojan.GenAsa!VCW6ua3WfJ8
Ikarus P2P-Worm.Win32.BlackControl
MaxSecure Virus.W32.Cabres.a
Fortinet W32/Merond.O!worm
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Blocker.HwYDEpsA

How to remove Win32/Merond.AC?

  • 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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