Categories: Malware

What is “Win32/Filecoder.Spora.B”?

The Win32/Filecoder.Spora.B 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.Spora.B virus can do?

  • Executable code extraction
  • Injection (inter-process)
  • Injection (Process Hollowing)
  • Creates RWX memory
  • Possible date expiration check, exits too soon after checking local time
  • A process created a hidden window
  • Uses Windows utilities for basic functionality
  • Executed a process and injected code into it, probably while unpacking
  • Attempts to delete volume shadow copies
  • Attempts to repeatedly call a single API many times in order to delay analysis time
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config
  • Installs itself for autorun at Windows startup
  • Creates a hidden or system file
  • Attempts to modify proxy settings
  • Anomalous binary characteristics
  • Uses suspicious command line tools or Windows utilities

How to determine Win32/Filecoder.Spora.B?


File Info:

crc32: DE7E9F38md5: b710017a58cf18354e702d326747e694name: B710017A58CF18354E702D326747E694.mlwsha1: a7631954bed4ccc95f8a51d496ee6e062cd1ffedsha256: e28dca64178f43907eda9f04823066769ab233bc1b0719aab9d7c90b7451dd7asha512: ba31a64987b8c5f40216cc56140e9674630a6faea0853d97a6a501e13fbf3efa926314add41b704936752ae0b6e06908ec550dd4c0f3f770442c2c6831acaddfssdeep: 3072:TVhZTTYObM/ZKYudjFE1UKyGwi6o1UiS1DgRf:xTQR/ZKDRUyGOiS1Dgtype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Di vefuyopiwucuOriginalFilename: yifo.exeFileVersion: 34, 9, 4, 8Comments: Yimojilu xataProductVersion: 34, 9, 4, 8Translation: 0x0409 0x04b0

Win32/Filecoder.Spora.B also known as:

Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 0051418e1 )
Elastic malicious (high confidence)
DrWeb Trojan.Siggen7.21438
Cynet Malicious (score: 100)
CAT-QuickHeal Ransom.Gen.A4
ALYac Trojan.Ransom.Spora
Cylance Unsafe
Zillya Backdoor.Androm.Win32.42855
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Spora.896745be
K7GW Trojan ( 0051418e1 )
Cybereason malicious.a58cf1
Symantec Ransom.Spora
ESET-NOD32 Win32/Filecoder.Spora.B
APEX Malicious
Avast Win32:Malware-gen
ClamAV Win.Trojan.Emotet-6524106-0
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Trojan.Ransomware.GenericKD.32688315
NANO-Antivirus Trojan.Win32.Androm.eoyirr
ViRobot Trojan.Win32.Zbot.238592.B
SUPERAntiSpyware Trojan.Agent/Gen-Dynamer
MicroWorld-eScan Trojan.Ransomware.GenericKD.32688315
Tencent Malware.Win32.Gencirc.10bbd22d
Ad-Aware Trojan.Ransomware.GenericKD.32688315
Sophos Mal/Generic-S
Comodo Malware@#36tpjkf8bwqy9
BitDefenderTheta Gen:NN.ZexaF.34608.lq0@amphMEhi
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_SPORA.THEAH
McAfee-GW-Edition Emotet-FAV!B710017A58CF
FireEye Generic.mg.b710017a58cf1835
Emsisoft Trojan.Emotet (A)
SentinelOne Static AI – Malicious PE
Webroot W32.Trojan.Gen
Avira TR/Crypt.XPACK.604027
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Ransom:Win32/Spora.B
AegisLab Trojan.Win32.Generic.4!c
GData Win32.Worm.Spora.N
TACHYON Ransom/W32.Spora.184320.B
AhnLab-V3 Trojan/Win32.Spora.R200938
McAfee Emotet-FAV!B710017A58CF
MAX malware (ai score=100)
VBA32 BScope.Trojan.Inject
Malwarebytes Trojan.PasswordStealer
Panda Trj/GdSda.A
TrendMicro-HouseCall Ransom_SPORA.THEAH
Rising Trojan.Kryptik!1.AA2B (KTSE)
Ikarus Trojan-Dropper.Win32.Danabot
Fortinet W32/Kryptik.HCUD!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Trojan.Generic

How to remove Win32/Filecoder.Spora.B?

  • 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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