Malware

How to remove “Win32/Kryptik.FOSU”?

Malware Removal

The Win32/Kryptik.FOSU 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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Gridinsoft Anti-Malware

Removing PC viruses manually may take hours and may damage your PC in the process. We recommend using GridinSoft Anti-Malware for virus removal. Allows to complete scan and cure your PC during the trial period.
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What Win32/Kryptik.FOSU virus can do?

  • Executable code extraction
  • Creates RWX memory
  • At least one IP Address, Domain, or File Name was found in a crypto call
  • A process created a hidden window
  • The binary likely contains encrypted or compressed data.
  • Uses Windows utilities for basic functionality
  • Attempts to delete volume shadow copies
  • Attempts to remove evidence of file being downloaded from the Internet
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config
  • Steals private information from local Internet browsers
  • Installs itself for autorun at Windows startup
  • Exhibits possible ransomware file modification behavior
  • Creates a hidden or system file
  • Attempts to modify proxy settings
  • Creates a copy of itself
  • Anomalous binary characteristics
  • Uses suspicious command line tools or Windows utilities

How to determine Win32/Kryptik.FOSU?


File Info:

crc32: 4F7571AC
md5: 4428735baf5dbfedfdbebce900fb353a
name: 4428735BAF5DBFEDFDBEBCE900FB353A.mlw
sha1: 7a27ead01145d878225f52db6507b91ce9c835b1
sha256: b5c82043ab6d722434f635f85ebec9faa058622c86cc2731b0d4936a1e6227eb
sha512: c2e43fbbd92550741d483d6569e74548e76508a335a688c98c40ea72913d1a79938e2271a361cbdff4554d58a78da5625c643a4689f2b191ed1626823fccc3a8
ssdeep: 768:plwLveNbKzidlVY59kbKzidlVY59kbKzidlAmVLybKzidlVY59+lSd05hLYVPIq:plwLv6Kr5UKr5UKu6Kr5U4dpDGV48E
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.FOSU also known as:

BkavW32.AIDetect.malware1
K7AntiVirusTrojan ( 00515aa21 )
Elasticmalicious (high confidence)
DrWebTrojan.Encoder.10103
CynetMalicious (score: 100)
CAT-QuickHealRansom.Exxroute.A3
ALYacTrojan.Dalexis.Gen.1
CylanceUnsafe
ZillyaTrojan.Kryptik.Win32.1436407
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_100% (W)
AlibabaRansom:Win32/Spora.5fe6224b
K7GWTrojan ( 00515aa21 )
Cybereasonmalicious.baf5db
CyrenW32/Ransom.CW.gen!Eldorado
SymantecPacked.Generic.493
ESET-NOD32a variant of Win32/Kryptik.FOSU
APEXMalicious
AvastWin32:Malware-gen
ClamAVWin.Ransomware.Razy-9808404-0
KasperskyHEUR:Trojan.Win32.Generic
BitDefenderTrojan.Dalexis.Gen.1
NANO-AntivirusTrojan.Win32.Yakes.elwdgv
MicroWorld-eScanTrojan.Dalexis.Gen.1
TencentMalware.Win32.Gencirc.10b5879e
Ad-AwareTrojan.Dalexis.Gen.1
SophosML/PE-A + Mal/Elenoocka-E
ComodoTrojWare.Win32.Crypt.CA@6ykcle
F-SecureHeuristic.HEUR/AGEN.1105007
BitDefenderThetaGen:NN.ZexaF.34628.fqW@a8cr8ko
VIPRETrojan.Win32.Generic!BT
TrendMicroRansom_HPCERBER.SMONT4
McAfee-GW-EditionBehavesLike.Win32.Generic.mh
FireEyeGeneric.mg.4428735baf5dbfed
EmsisoftTrojan.Dalexis.Gen.1 (B)
SentinelOneStatic AI – Malicious PE
JiangminTrojan.Generic.atfsq
WebrootTrojan.Dropper.Gen
AviraHEUR/AGEN.1105007
eGambitUnsafe.AI_Score_83%
Antiy-AVLTrojan[Ransom]/Win32.Spora
KingsoftWin32.Heur.KVMH017.a.(kcloud)
MicrosoftRansom:Win32/Spora.A
ArcabitTrojan.Dalexis.Gen.1
AegisLabTrojan.Win32.Spora.4!c
ZoneAlarmHEUR:Trojan.Win32.Generic
GDataTrojan.Dalexis.Gen.1
AhnLab-V3Trojan/Win32.Cerber.R198878
Acronissuspicious
McAfeeRansomware-FMJ!4428735BAF5D
MAXmalware (ai score=80)
VBA32BScope.Trojan.Zbot.2312
MalwarebytesRansom.Cerber
PandaTrj/Genetic.gen
TrendMicro-HouseCallRansom_HPCERBER.SMONT4
RisingRansom.Cerber!8.3058 (CLOUD)
YandexTrojan.GenAsa!g4m8kxlnc38
IkarusTrojan.Ransom.Spora
FortinetW32/Kryptik.FONH!tr
AVGWin32:Malware-gen
Paloaltogeneric.ml
Qihoo-360Win32/Trojan.917

How to remove Win32/Kryptik.FOSU?

Win32/Kryptik.FOSU removal tool
  • 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.

About the author

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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