Categories: Malware

About “Win32/Kryptik.HMYY” infection

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

  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • Behavioural detection: Executable code extraction – unpacking
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • Creates RWX memory
  • Dynamic (imported) function loading detected
  • Performs HTTP requests potentially not found in PCAP.
  • HTTPS urls from behavior.
  • A process created a hidden window
  • CAPE extracted potentially suspicious content
  • Unconventionial language used in binary resources: Spanish (Paraguay)
  • The binary likely contains encrypted or compressed data.
  • Authenticode signature is invalid
  • Behavioural detection: Injection (Process Hollowing)
  • Executed a process and injected code into it, probably while unpacking
  • Behavioural detection: Injection (inter-process)
  • Created a process from a suspicious location
  • CAPE detected the STOP malware family
  • Attempts to modify proxy settings
  • Anomalous binary characteristics

Related domains:

wpad.local-net
api.2ip.ua

How to determine Win32/Kryptik.HMYY?


File Info:

name: EF6302675C84591705C0.mlwpath: /opt/CAPEv2/storage/binaries/f88f6cd65860f8365a52eff612c3309529c536b0cbab41b69a7f253fc9b66c61crc32: 57598808md5: ef6302675c84591705c0b9782bc1ad67sha1: d7f5ccdea083b4415e55e250cf82ebfacbc81f7bsha256: f88f6cd65860f8365a52eff612c3309529c536b0cbab41b69a7f253fc9b66c61sha512: 9b5fba48a9702279de590aa5dd872a0de88f52ab42243a3aecb19c522cb56795b68bf2a281baaaa62c21230abe28503865cc1b67cf1d4ba6a2a23e88999ddbd1ssdeep: 12288:MR8D3AfBXVXCCuqqyOEwr7hHzVXMhVm6TMomGfgctqYQYayuJmRVk8PT/Pew5PI:qdw7DJFUVpJjgcMqu2d/nItype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T11F0502006AA0C035F1F356F80ABB9378A92E7DA0AB6891CF12D416FA5775AD1FC31717sha3_384: 5a2cbbb01e16cf3c720caaeb1d510cd0b496c21e8ae23f74900fd4d6c5e45d80a4c2123041a5d48ebc8463490d988eceep_bytes: 8bff558bece806030000e8110000005dtimestamp: 2020-06-25 20:55:50

Version Info:

Translations: 0x0252 0x0011

Win32/Kryptik.HMYY also known as:

Bkav W32.AIDetect.malware1
Lionic Trojan.Win32.Stop.j!c
Elastic malicious (high confidence)
DrWeb Trojan.Siggen15.50795
MicroWorld-eScan Trojan.GenericKD.37824203
CAT-QuickHeal Trojanransom.Stop
ALYac Trojan.Ransom.Stop
Malwarebytes Trojan.MalPack.GS
Sangfor Trojan.Win32.Save.a
K7AntiVirus Trojan ( 005690671 )
BitDefender Trojan.GenericKD.37824203
K7GW Trojan ( 005690671 )
CrowdStrike win/malicious_confidence_90% (W)
Cyren W32/Kryptik.FNY.gen!Eldorado
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Kryptik.HMYY
APEX Malicious
Paloalto generic.ml
ClamAV Win.Dropper.Tofsee-9903298-0
Kaspersky HEUR:Trojan-Ransom.Win32.Stop.gen
Alibaba Malware:Win32/km_24afe.None
ViRobot Trojan.Win32.Z.Stop.845376
Avast Win32:BotX-gen [Trj]
Rising Trojan.Kryptik!1.D9FE (CLASSIC)
Ad-Aware Trojan.GenericKD.37824203
Sophos ML/PE-A + Troj/Krypt-DI
Baidu Win32.Trojan.Kryptik.jm
Zillya Trojan.Kryptik.Win32.3578903
TrendMicro Ransom_StopCrypt.R002C0DKN21
McAfee-GW-Edition BehavesLike.Win32.Emotet.cc
FireEye Generic.mg.ef6302675c845917
Emsisoft Trojan.GenericKD.37824203 (B)
Ikarus Trojan.Agent
GData Win32.Trojan.BSE.WS9D4D
Avira TR/Crypt.Agent.mbfta
Antiy-AVL Trojan/Generic.ASMalwS.34BC37F
Kingsoft Win32.Troj.Undef.(kcloud)
Gridinsoft Ransom.Win32.STOP.sa
Arcabit Trojan.Generic.D24126CB
Microsoft Ransom:Win32/StopCrypt.PJ!MTB
Cynet Malicious (score: 100)
AhnLab-V3 Packed/Win.GDV.R446523
Acronis suspicious
McAfee Packed-GDV!EF6302675C84
MAX malware (ai score=82)
VBA32 TrojanRansom.Stop
Cylance Unsafe
TrendMicro-HouseCall Ransom_StopCrypt.R002C0DKN21
SentinelOne Static AI – Malicious PE
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/GenKryptik.FMHL!tr
AVG Win32:BotX-gen [Trj]
Cybereason malicious.ea083b
Panda Trj/GdSda.A

How to remove Win32/Kryptik.HMYY?

  • 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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