Categories: Malware

Win32/Kryptik.HDFF malicious file

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

  • Executable code extraction
  • Injection (inter-process)
  • Injection (Process Hollowing)
  • Injection with CreateRemoteThread in a remote process
  • Creates RWX memory
  • Possible date expiration check, exits too soon after checking local time
  • Mimics the system’s user agent string for its own requests
  • A process attempted to delay the analysis task.
  • Attempts to connect to a dead IP:Port (5 unique times)
  • At least one IP Address, Domain, or File Name was found in a crypto call
  • A named pipe was used for inter-process communication
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option
  • A process created a hidden window
  • Drops a binary and executes it
  • Performs some HTTP requests
  • Uses Windows utilities for basic functionality
  • Executed a process and injected code into it, probably while unpacking
  • Attempts to repeatedly call a single API many times in order to delay analysis time
  • A system process is generating network traffic likely as a result of process injection
  • Behavior consistent with a dropper attempting to download the next stage.
  • Installs itself for autorun at Windows startup
  • Checks the CPU name from registry, possibly for anti-virtualization
  • Creates a copy of itself
  • Collects information to fingerprint the system

Related domains:

www.ip-adress.com
crl.comodoca.com
ocsp.comodoca.com
ocsp.usertrust.com
crl.usertrust.com

How to determine Win32/Kryptik.HDFF?


File Info:

crc32: 8E8D6A27md5: d8f51ff0660f67b2d0354209197171b1name: 88888.pngsha1: 5f50b55e5139867989db081d1cfcb5c41e879859sha256: ea895a891f28f083940ba31a7dd5c3b117a4e7d515fb917f1e93f897c965acdasha512: 893fe50da1ec15199dcbf846bf9ed6e0b716c7509b832fc113ac8bc6c470995ab0c8b9b3663cdfa8c3aef9b62f7f84955e5ebe56a0cc56d091fdb7b36d32d451ssdeep: 12288:9cRZj2aHXHnoXFHMXK8Sihw0RbD/tNMr/n:sNtHe+VStype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright xa9 1997-2017 Simon Tatham.InternalName: PuTTYgenFileVersion: Release 0.68CompanyName: Simon TathamProductName: PuTTY suiteProductVersion: Release 0.68FileDescription: PuTTY SSH key generation utilityOriginalFilename: PuTTYgenTranslation: 0x0809 0x04b0

Win32/Kryptik.HDFF also known as:

Bkav W32.AIDetectVM.malware2
Cylance Unsafe
Cybereason malicious.e51398
TrendMicro Backdoor.Win32.QAKBOT.SMP
BitDefenderTheta Gen:NN.ZexaF.34108.0n0@aSIdLkci
APEX Malicious
Sophos Troj/Qbot-FS
Invincea heuristic
Trapmine suspicious.low.ml.score
FireEye Generic.mg.d8f51ff0660f67b2
Ikarus Trojan-Ransom.Shade
Antiy-AVL GrayWare/Win32.Kryptik.ehls
Endgame malicious (high confidence)
Microsoft Trojan:Win32/Wacatac.C!ml
Acronis suspicious
McAfee W32/PinkSbot-GN!D8F51FF0660F
ESET-NOD32 a variant of Win32/Kryptik.HDFF
TrendMicro-HouseCall Backdoor.Win32.QAKBOT.SMP
Rising Malware.Heuristic!ET#83% (RDMK:cmRtazr9qKgLhTsDRFVXx9nXzHn9)
SentinelOne DFI – Malicious PE
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Ursnif.CZ!tr
Qihoo-360 HEUR/QVM20.1.1375.Malware.Gen

How to remove Win32/Kryptik.HDFF?

  • 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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