Categories: Ransom

How to remove “Ransom.Onion.A”?

The Ransom.Onion.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 Ransom.Onion.A virus can do?

  • Executable code extraction
  • Injection (inter-process)
  • Injection (Process Hollowing)
  • Creates RWX memory
  • Reads data out of its own binary image
  • Performs some HTTP requests
  • Executed a process and injected code into it, probably while unpacking
  • Mimics the file times of a Windows system file
  • Installs itself for autorun at Windows startup
  • Exhibits possible ransomware file modification behavior
  • Writes a potential ransom message to disk
  • Contacts C&C server HTTP check-in (Banking Trojan)
  • Creates a copy of itself
  • Appends a known Cerber ransomware file extension to files that have been encrypted
  • Anomalous binary characteristics

Related domains:

crazyloading.cc
ww17.crazyloading.cc

How to determine Ransom.Onion.A?


File Info:

crc32: B12F4DC4md5: 3c93f5734de703d7ad198d2dad3b7ca4name: 3C93F5734DE703D7AD198D2DAD3B7CA4.mlwsha1: e9e4531a8aa8275fbf9b0e480eaeacd4f5a932b3sha256: c71384686c8caa0a72dcc7e0a4e93f56b8c66f9523fa1498ec9cf1794144ad70sha512: eb12c08e4dbca51410c9cd52abe113f01b1951dbe1f13918f927d8c9545de423a27c4377f2ff919f901d5a91ba3f527c0d8e531514b5220f9bbb8bc4b374b35dssdeep: 3072:m8Dsp+FNX1dFOvDlXJulnN9loRPJUiupi2UoJlYlv:m8dNXSEdKRxV7KJlYlvtype: PE32 executable (GUI) Intel 80386, for MS Windows, Nullsoft Installer self-extracting archive

Version Info:

0: [No Data]

Ransom.Onion.A also known as:

Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 001f8f911 )
Lionic Trojan.Win32.Sysn.b!c
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.5054
Cynet Malicious (score: 99)
CAT-QuickHeal Ransom.Onion.A
ALYac Trojan.Ransom.Filecoder
Cylance Unsafe
Sangfor Ransom.Win32.Enestedel.B!rsm
CrowdStrike win/malicious_confidence_80% (D)
Alibaba Ransom:Win32/Enestedel.abcaa78b
K7GW Trojan ( 001f8f911 )
Cybereason malicious.34de70
Symantec Packed.NSISPacker!g6
ESET-NOD32 Win32/Filecoder.Q
APEX Malicious
Avast Win32:Malware-gen
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Trojan.GenericKD.34057633
NANO-Antivirus Trojan.Win32.Inject.eeuokp
ViRobot Trojan.Win32.S.Cerber.127353
MicroWorld-eScan Trojan.GenericKD.34057633
Tencent Win32.Trojan.Filecoder.Lmut
Ad-Aware Trojan.GenericKD.34057633
Sophos Mal/Generic-R + Mal/Miuref-L
Comodo Malware@#2mf1lj1871xu2
BitDefenderTheta Gen:NN.ZedlaF.34058.dq4@a0vYjtn
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_CERBERENC.SMNS1
McAfee-GW-Edition BehavesLike.Win32.ObfusRansom.cc
FireEye Generic.mg.3c93f5734de703d7
Emsisoft Trojan.GenericKD.34057633 (B)
SentinelOne Static AI – Suspicious PE
Webroot Trojan.Dropper.Gen
Avira TR/Dropper.Gen
Antiy-AVL Trojan/Generic.ASMalwS.1F853D3
Kingsoft Win32.Troj.GenericKD.v.(kcloud)
Microsoft Ransom:Win32/Sorikrypt.A
SUPERAntiSpyware Ransom.Cerber/Variant
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Trojan.GenericKD.34057633
AhnLab-V3 Trojan/Win32.Cerber.C1502717
McAfee Artemis!3C93F5734DE7
MAX malware (ai score=100)
Malwarebytes Malware.AI.210415151
Panda Trj/CI.A
TrendMicro-HouseCall Ransom_CERBERENC.SMNS1
Rising Trojan.Generic@ML.100 (RDML:fWMWX41SYFv4vstcV4PEQQ)
Yandex Trojan.Injector!FRIBotEAFuo
Fortinet W32/Injector.DCKN!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Generic.HyoD8DcA

How to remove Ransom.Onion.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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