Categories: Malware

How to remove “Win32/Kryptik.GFYW”?

The Win32/Kryptik.GFYW 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/Kryptik.GFYW virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • Creates RWX memory
  • Possible date expiration check, exits too soon after checking local time
  • Anomalous file deletion behavior detected (10+)
  • Attempts to connect to a dead IP:Port (12 unique times)
  • Dynamic (imported) function loading detected
  • Performs HTTP requests potentially not found in PCAP.
  • Starts servers listening on 127.0.0.1:9050
  • Reads data out of its own binary image
  • A process created a hidden window
  • CAPE extracted potentially suspicious content
  • Drops a binary and executes it
  • The binary contains an unknown PE section name indicative of packing
  • Authenticode signature is invalid
  • Tries to unhook or modify Windows functions monitored by Cuckoo
  • Creates a registry key or value with NUL characters to avoid detection with regedit
  • Created a process from a suspicious location
  • Installs Tor on the infected machine
  • Installs itself for autorun at Windows startup
  • Attempts to modify browser security settings
  • Attempts to disable browser security warnings
  • Harvests cookies for information gathering

How to determine Win32/Kryptik.GFYW?


File Info:

name: E7BBB0ADF9AFEA246DE6.mlwpath: /opt/CAPEv2/storage/binaries/9d02bbefc3e7a81ded1c1330f1c35d286c77f1ec8cc82fa97ddae98053eaa950crc32: CB98CF22md5: e7bbb0adf9afea246de634d2bc31dde8sha1: 93c72538daac857b3e4c731b420be5e4943afd13sha256: 9d02bbefc3e7a81ded1c1330f1c35d286c77f1ec8cc82fa97ddae98053eaa950sha512: 3974b75152d8f4a5835c263af956765b183c2b4d10a0171e07ffa58198c412aaa9e9071fdb79d18076d81a66de8059ea66e81d852b5a94a68ca888a624005803ssdeep: 98304:LSiVO18nbRW0BuYkdm3S2hCMDnYiHSull7yZdMs:5xb7BRkwC8CMb3SeGZCstype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1C436127FB26AA23ECC9A473289739710997BBF65A50A8C2F07F0254DCF754601E3B605sha3_384: ae0760c664baced48756d17027f366a9843d056a18199ac53106e17a849ba6f9627e4a7c6f54ecf7417b7aa2230e6acbep_bytes: 558bec83c4a453565733c08945c48945timestamp: 2020-11-15 09:48:30

Version Info:

Comments: This installation was built with Inno Setup.CompanyName: Aron FileDescription: Aron Setup FileVersion: 2.65.1 LegalCopyright: OriginalFileName: ProductName: Sacred 2 ProductVersion: 2.65.1 Translation: 0x0000 0x04b0

Win32/Kryptik.GFYW also known as:

Lionic Trojan.Win32.TinyNuke.7!c
Cynet Malicious (score: 99)
CAT-QuickHeal Trojan.Tinynuke
McAfee Artemis!E7BBB0ADF9AF
Alibaba TrojanBanker:Win32/TinyNuke.2dbfac74
K7GW Trojan ( 0052ef4e1 )
K7AntiVirus Trojan ( 0052ef4e1 )
Symantec Trojan Horse
ESET-NOD32 a variant of Win32/Kryptik.GFYW
Kaspersky Trojan-Banker.Win32.TinyNuke.akp
BitDefender Trojan.GenericKD.47468832
MicroWorld-eScan Trojan.GenericKD.47468832
Avast Win32:TrojanX-gen [Trj]
Ad-Aware Trojan.GenericKD.47468832
Sophos Mal/Generic-S
F-Secure Trojan.TR/Crypt.Agent.vvocd
TrendMicro TROJ_GEN.R002C0GKP21
McAfee-GW-Edition BehavesLike.Win32.Dropper.tc
FireEye Trojan.GenericKD.47468832
Emsisoft Trojan.GenericKD.47468832 (B)
Ikarus Trojan.Win32.Crypt
GData Win32.Trojan-Stealer.TinyNuke.4HISOA
Avira TR/Crypt.Agent.vvocd
Gridinsoft Ransom.Win32.Sabsik.sa
Arcabit Trojan.Generic.D2D45120
ViRobot Trojan.Win32.Z.Kryptik.5324027
Microsoft Trojan:Win32/Sabsik.FL.B!ml
ALYac Trojan.GenericKD.47468832
MAX malware (ai score=88)
TrendMicro-HouseCall TROJ_GEN.R002C0GKP21
Tencent Win32.Trojan.Kryptik.Amch
Fortinet W32/Kryptik.GFYW!tr
AVG Win32:TrojanX-gen [Trj]
Cybereason malicious.8daac8
Panda Trj/CI.A

How to remove Win32/Kryptik.GFYW?

  • 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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