Threat Database Trojans Trojan.Kryptik.DYCN

Trojan.Kryptik.DYCN

By CagedTech in Trojans
Published:

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 23
First Seen: August 23, 2024
Last Seen: October 29, 2026
OS(es) Affected: Windows

Trojan.Kryptik.DYCN is a Windows-based Trojan belonging to the widely recognized Kryptik family of malware. With a danger level rated 8 out of 10, this threat is considered highly destructive and capable of giving attackers significant control over an infected computer. Since it was first detected, security researchers have continued to track new variants of this malicious program, indicating that it remains an active threat for Windows users.

What Trojan.Kryptik.DYCN Does

Once Trojan.Kryptik.DYCN infects a system, it installs itself silently and runs in the background without displaying any visible windows or alerts. It is built to operate in a stealthy manner, using techniques such as process hollowing and memory manipulation to hide its activity from the user and from basic security checks. The malware has been observed abusing legitimate Windows system tools to execute its payload, allowing it to blend in with normal system processes and avoid raising suspicion.

Behind the scenes, Kryptik.DYCN can allow remote attackers to take extensive control over the compromised machine. This may include covertly deleting files, installing additional malicious components, and carrying out other damaging actions without the user's knowledge or consent. Because the Trojan is designed to function quietly, infected users often have no immediate indication that anything is wrong, even while serious damage is being done in the background.

How It Usually Gets Onto Computers

Trojan.Kryptik.DYCN typically spreads by exploiting system vulnerabilities and security weaknesses on unpatched or poorly protected computers. It is also commonly distributed through software downloaded from malicious or compromised websites, as well as through email attachments sent from untrusted or unknown senders. These malicious attachments can be disguised as seemingly harmless files, including executables and even files that appear to be images or videos, tricking users into opening them.

Risks for the User

The presence of this Trojan on a computer carries serious risks. Because it can grant attackers remote control over the system, victims may face unauthorized data theft, financial loss, identity theft, or further malware infections. The Trojan's ability to delete files and install additional malicious software can lead to data loss, system instability, and a cascading series of security problems. Its stealthy design also means that infections can persist for extended periods before being noticed, increasing the potential damage.

Signs of Infection

Because Trojans like Kryptik.DYCN are built to run covertly, obvious symptoms are often absent. However, users may notice unusual system slowdowns, unexpected crashes, unfamiliar processes running in the background, unexplained changes to files, or unusual network activity. Any of these signs, especially when they appear together, should be treated as a potential indicator of compromise.

How to Stay Protected

To reduce the risk of infection, users should keep their operating system and all installed software fully updated, since unpatched vulnerabilities are a common entry point for this type of threat. Avoid downloading software from unofficial or suspicious websites, and never open email attachments from unknown or unverified senders. Exercise caution with files that have unusual extensions or that arrive unexpectedly, even if they appear to be common formats like images. Maintaining regular backups of important data and using reputable, up-to-date security software can also help detect and remove threats like Trojan.Kryptik.DYCN before they cause significant harm.

Analysis Report

General information

Family Name: Trojan.Kryptik.DYCN
Signature status: No Signature

Known Samples

MD5: b95549a6b1a3d0e0cbd3085fc2b6f05e
SHA1: 2cdd659403f616bc606a98a680a80ec91a159136
SHA256: F5280C72B48FF191CD6844FD5320A44087A2491B87AA1252C10B5A2C69482D3E
File Size: 488.45 KB, 488448 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have debug information
  • File doesn't have resources
  • File doesn't have security information
  • File has exports table
  • File is 32-bit executable
  • File is either console or GUI application
  • File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
  • File is Native application (NOT .NET application)
  • File is not packed
Show 2 more
  • IMAGE_FILE_DLL is not set inside PE header (Executable)
  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

File Traits

  • 2+ executable sections
  • dll
  • HighEntropy
  • WriteProcessMemory
  • x86

Block Information

Total Blocks: 1,703
Potentially Malicious Blocks: 283
Whitelisted Blocks: 735
Unknown Blocks: 685

Visual Map

0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtClose
  • ntdll.dll!NtCreateFile
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenProcessToken
  • ntdll.dll!NtQueryAttributesFile
Show 18 more
  • ntdll.dll!NtQueryDebugFilterState
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQuerySystemInformationEx
  • ntdll.dll!NtQueryValueKey
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtQueryVolumeInformationFile
  • ntdll.dll!NtReadFile
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationFile
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtUnmapViewOfSection
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWriteFile
Process Manipulation Evasion
  • NtUnmapViewOfSection
Process Shell Execute
  • CreateProcess
Anti Debug
  • NtQuerySystemInformation

Shell Command Execution

C:\WINDOWS\SysWOW64\rundll32.exe C:\WINDOWS\system32\rundll32.exe c:\users\user\downloads\2cdd659403f616bc606a98a680a80ec91a159136_0000488448.,LiQMAxHB