Categories: Malware

Win32/Filecoder.MedusaLocker.C (file analysis)

The Win32/Filecoder.MedusaLocker.C 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/Filecoder.MedusaLocker.C virus can do?

  • Attempts to connect to a dead IP:Port (1 unique times)
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option
  • A process created a hidden window
  • Creates an autorun.inf file
  • Uses Windows utilities for basic functionality
  • Attempts to delete volume shadow copies
  • Attempts to repeatedly call a single API many times in order to delay analysis time
  • Modifies boot configuration settings
  • Installs itself for autorun at Windows startup
  • Creates a hidden or system file
  • Clears Windows events or logs
  • Creates a copy of itself
  • Attempts to disable UAC
  • Attempts to modify UAC prompt behavior
  • Uses suspicious command line tools or Windows utilities

How to determine Win32/Filecoder.MedusaLocker.C?


File Info:

crc32: 5D354B8Emd5: 4293f5b9957dc9e61247e6e1149e4c0fname: 4293F5B9957DC9E61247E6E1149E4C0F.mlwsha1: c87cd85d434e358b85f94cad098aa1f653d9cdbfsha256: a8b84ab6489fde1fab987df27508abd7d4b30d06ab854b5fda37a277e89a2558sha512: 789e02dbe1c82540471d1a2dc28e85dc0fc458aa10157b9f0f60bd5646cba0a990504d7551a75a10a1a071ae3fd2cde4f5d27bab61fef053f2bc9c502dfbe6e8ssdeep: 12288:cPJ4UETYQivI2qZ7aSgLwkFVpzUvest4ZEbjJLuoJVoM7:JDTYVQ2qZ7aSgLwuVfstRJL7YMtype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Filecoder.MedusaLocker.C also known as:

Bkav W32.SerenaKR.Trojan
Elastic malicious (high confidence)
ClamAV Win.Ransomware.Medusalocker-9811271-0
McAfee GenericRXKP-XE!4293F5B9957D
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
AegisLab Trojan.Win32.DelShad.trwZ
Sangfor Trojan.Win32.Save.a
K7AntiVirus Trojan ( 0055a9531 )
BitDefender Generic.Ransom.MedusaLocker.942644D7
K7GW Trojan ( 0055a9531 )
Cybereason malicious.9957dc
Arcabit Generic.Ransom.MedusaLocker.942644D7
Cyren W32/Ransom.OB.gen!Eldorado
Symantec Ransom.Cryptolocker
APEX Malicious
Paloalto generic.ml
Cynet Malicious (score: 100)
Kaspersky Trojan-Ransom.Win32.Medusa.aj
Alibaba Ransom:Win32/MedusaLocker.cd1a3577
NANO-Antivirus Trojan.Win32.Filecoder.hjdojw
MicroWorld-eScan Generic.Ransom.MedusaLocker.942644D7
Tencent Malware.Win32.Gencirc.10cdcb68
Ad-Aware Generic.Ransom.MedusaLocker.942644D7
Sophos Mal/Generic-S
Comodo Malware@#2exn368ws85cy
F-Secure Trojan.TR/AD.MedusaRansom.yvkui
DrWeb Trojan.DownLoader33.34694
Zillya Trojan.DelShad.Win32.481
TrendMicro Ransom.Win32.MEDUSALOCKER.SMTH
McAfee-GW-Edition BehavesLike.Win32.Injector.jh
MaxSecure Trojan.Malware.88792205.susgen
FireEye Generic.mg.4293f5b9957dc9e6
Emsisoft Generic.Ransom.MedusaLocker.942644D7 (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Trojan.DelShad.vv
Webroot W32.Trojan.Gen
Avira TR/AD.MedusaRansom.yvkui
MAX malware (ai score=100)
Antiy-AVL Trojan[Ransom]/Win32.Ako
Microsoft Ransom:Win32/MedusaLocker.A!MTB
ViRobot Trojan.Win32.Medusa.694784
ZoneAlarm Trojan-Ransom.Win32.Medusa.aj
GData Win32.Trojan-Ransom.Filecoder.BO
AhnLab-V3 Malware/Win32.RL_Generic.R335910
VBA32 Trojan.DelShad
ALYac Trojan.Ransom.MedusaLocker
Malwarebytes Ransom.Medusa
Panda Trj/GdSda.A
ESET-NOD32 a variant of Win32/Filecoder.MedusaLocker.C
TrendMicro-HouseCall Ransom.Win32.MEDUSALOCKER.SMTH
Rising Ransom.Medusa!1.C21A (CLOUD)
Yandex Trojan.Filecoder!IKimDDCJuYs
Ikarus Trojan-Ransom.Medusalocker
eGambit Unsafe.AI_Score_96%
Fortinet W32/Filecoder.NYA!tr.ransom
BitDefenderTheta Gen:NN.ZexaF.34590.QuW@aK8T6Ili
AVG Win32:RansomX-gen [Ransom]
Avast Win32:RansomX-gen [Ransom]
CrowdStrike win/malicious_confidence_100% (W)
Qihoo-360 Win32/Trojan.294

How to remove Win32/Filecoder.MedusaLocker.C?

  • 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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