Categories: RansomTrojan

Should I remove “Trojan.Ransom.Ryuk.A”?

The Trojan.Ransom.Ryuk.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 Trojan.Ransom.Ryuk.A virus can do?

  • Injection with CreateRemoteThread in a remote process
  • Creates RWX memory
  • A process created a hidden window
  • Drops a binary and executes it
  • Uses Windows utilities for basic functionality
  • Code injection with CreateRemoteThread in a remote process
  • Installs itself for autorun at Windows startup
  • Exhibits possible ransomware file modification behavior
  • Writes a potential ransom message to disk
  • Creates a hidden or system file
  • Network activity detected but not expressed in API logs
  • Anomalous binary characteristics

How to determine Trojan.Ransom.Ryuk.A?


File Info:

crc32: C4CF0230md5: f56912fe419e62d050f973cc471374f2name: tmpqmu45vt8sha1: dad70b828a5fa8a7ff2becbf5ec7956cf9774dcdsha256: e03ebfafb8a95f5d58a891653b1f2a1f862006fef8a4bc0afdbffb9b816d7548sha512: 83c585df01a2f6401461105c1ac700ba5e6966b09c87b85357d68208a28a29b5af838d99531adb50a283aba4165b1196a4c9e4ec22f7e19044e9bd15409d3c27ssdeep: 6144:f5yaXtrA/WSo1rl3ALrlHQpn0BwK3SBDmhYfFQCG:fTX6WSofcZ+KCIGDGtype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan.Ransom.Ryuk.A also known as:

Bkav W32.AIDetectVM.malware1
MicroWorld-eScan Trojan.Ransom.Ryuk.A
FireEye Generic.mg.f56912fe419e62d0
CAT-QuickHeal Ransom.Ryuk.S4808393
McAfee Ransom-Ryuk!F56912FE419E
Malwarebytes Ransom.FileCryptor
VIPRE Trojan.Win32.Generic!BT
CrowdStrike win/malicious_confidence_100% (D)
K7GW Trojan ( 0053a8931 )
K7AntiVirus Trojan ( 0053a8931 )
Invincea heuristic
Cyren W32/Ransom.Ryuk.A.gen!Eldorado
Symantec Trojan.Cridex
ESET-NOD32 a variant of Win32/GenKryptik.CSZN
APEX Malicious
ClamAV Win.Ransomware.Ryuk-6688842-0
GData Trojan.Ransom.Ryuk.A
Kaspersky HEUR:Trojan.Win32.Invader
BitDefender Trojan.Ransom.Ryuk.A
NANO-Antivirus Trojan.Win32.Invader.fgronb
Avast Win64:RansomX-gen [Ransom]
Tencent Malware.Win32.Gencirc.1197aecc
Ad-Aware Trojan.Ransom.Ryuk.A
Sophos Troj/Mdrop-IHE
F-Secure Heuristic.HEUR/AGEN.1111159
DrWeb Trojan.Encoder.10700
Zillya Trojan.Ransom.Win32.1398
TrendMicro Ransom.Win32.RYUK.SMA
McAfee-GW-Edition Ransom-Ryuk!F56912FE419E
Emsisoft Trojan.Ransom.Ryuk.A (B)
Ikarus Trojan-Ransom.Ryuk
F-Prot W32/Ransom.Ryuk.A.gen!Eldorado
Jiangmin Trojan.Invader.bsk
Avira HEUR/AGEN.1111159
eGambit Unsafe.AI_Score_99%
Antiy-AVL Trojan/Win32.Invader
Endgame malicious (high confidence)
Arcabit Trojan.Ransom.Ryuk.A
ZoneAlarm HEUR:Trojan.Win32.Invader
Microsoft Ransom:Win64/Ryuk.A
Cynet Malicious (score: 90)
AhnLab-V3 Dropper/Win32.Ryukran.R234915
ALYac Trojan.Ransom.Ryuk
MAX malware (ai score=80)
VBA32 BScope.Trojan.Occamy
Cylance Unsafe
TrendMicro-HouseCall Ransom.Win32.RYUK.SMA
Rising Ransom.Jabaxsta!1.B3AA (RDMK:cmRtazrpG+pALQTAwTEZW3IK4Gzt)
Yandex Trojan.Invader!
SentinelOne DFI – Malicious PE
MaxSecure Trojan.Malware.33043.susgen
Fortinet W32/Invader.FAB!tr
BitDefenderTheta Gen:NN.ZexaF.34130.yuX@aOCt3Eb
AVG Win64:RansomX-gen [Ransom]
Cybereason malicious.e419e6
Panda Trj/GdSda.A
Qihoo-360 HEUR/QVM10.1.1FBF.Malware.Gen

How to remove Trojan.Ransom.Ryuk.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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