Categories: Malware

What is “Win32/Kryptik.FXJS”?

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

  • A file was accessed within the Public folder.
  • Sample contains Overlay data
  • CAPE extracted potentially suspicious content
  • The binary contains an unknown PE section name indicative of packing
  • Authenticode signature is invalid
  • Uses Windows utilities to create a scheduled task
  • Behavioural detection: Injection (inter-process)
  • Behavioural detection: Injection with CreateRemoteThread in a remote process
  • CAPE detected the embedded win api malware family
  • Yara detections observed in process dumps, payloads or dropped files

How to determine Win32/Kryptik.FXJS?


File Info:

name: 85AD739ABA5F21114564.mlwpath: /opt/CAPEv2/storage/binaries/7e4f2594e52faa81bd27e0fcb59beb9f93c8f6b8d689e60eb8ce434f250d82fccrc32: 2F0E960Emd5: 85ad739aba5f21114564d1ea625f84efsha1: 5620ccbc0e687c4fc9d274514a9e9623e8e50ec9sha256: 7e4f2594e52faa81bd27e0fcb59beb9f93c8f6b8d689e60eb8ce434f250d82fcsha512: c6001217be0a30a86e62f8fe6f2bada8de4ff03e1304b8ac8a0f70e9922eb7cad16fc4d3a52d3bba80bdf52055442c13c2bb5c313282f992c2fef82c603360fcssdeep: 12288:P9MHSFNnnzr0Sbw1zhRxizZwR8pDPzUqA+x:P9MHSFNnn+izZZpzzdAStype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T11F949D107A888072C2B334314779E5B349AC68301E2F5A9F57C8197A5FB85D1BB39F6Bsha3_384: 041c2042dd86381516d70cd62e20b8ba062991d7a9efd70375c22da5b36ec93b7c93817559be13581617c05c9fb4c17eep_bytes: e8ee030000e94efeffff558beca1f8d0timestamp: 2017-10-04 07:48:11

Version Info:

0: [No Data]

Win32/Kryptik.FXJS also known as:

Elastic malicious (high confidence)
DrWeb Trojan.Encoder.3953
MicroWorld-eScan Gen:Heur.Mint.Zard.55
FireEye Generic.mg.85ad739aba5f2111
Skyhigh BehavesLike.Win32.Generic.gc
McAfee Trojan-FQNX!85AD739ABA5F
Cylance unsafe
Sangfor Suspicious.Win32.Save.a
K7AntiVirus Trojan ( 00518a1a1 )
Alibaba Ransom:Win32/Crusis.23ac9460
K7GW Trojan ( 00518a1a1 )
CrowdStrike win/malicious_confidence_90% (W)
BitDefenderTheta Gen:NN.ZexaF.36744.AuZ@aq1!@Ajm
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Kryptik.FXJS
APEX Malicious
Cynet Malicious (score: 100)
Kaspersky HEUR:Trojan-Ransom.Win32.Crusis.gen
BitDefender Gen:Heur.Mint.Zard.55
NANO-Antivirus Trojan.Win32.Ursnif.etjbod
Avast Win32:Splitter-A [Trj]
Tencent Win32.Trojan-Ransom.Crusis.Bujl
Emsisoft Gen:Heur.Mint.Zard.55 (B)
F-Secure Heuristic.HEUR/AGEN.1358377
VIPRE Gen:Heur.Mint.Zard.55
Trapmine suspicious.low.ml.score
Sophos Mal/Generic-S
Ikarus Trojan.Win32.Crypt
Jiangmin TrojanSpy.Ursnif.aia
Google Detected
Avira HEUR/AGEN.1358377
Antiy-AVL Trojan/Win32.Kryptik
Kingsoft malware.kb.a.1000
Arcabit Trojan.Mint.Zard.55
ZoneAlarm HEUR:Trojan-Ransom.Win32.Crusis.gen
GData Gen:Heur.Mint.Zard.55
AhnLab-V3 Trojan/Win.FQNX.C5301881
VBA32 BScope.Trojan.Inject
MAX malware (ai score=87)
Malwarebytes Generic.Malware/Suspicious
Rising Trojan.Generic@AI.100 (RDML:/htKfZ4o2tTz6IrEXmOosw)
Yandex Trojan.GenAsa!d9epGSQDS5g
Fortinet W32/GenKryptik.AYHW!tr
AVG Win32:Splitter-A [Trj]
Cybereason malicious.c0e687
DeepInstinct MALICIOUS

How to remove Win32/Kryptik.FXJS?

  • 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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