Threat Database Trojans Trojan.Kryptik.Gen.GCC

Trojan.Kryptik.Gen.GCC

Trojan.Kryptik.Gen.GCC is a detection name used to identify a malicious program that falls under the broad "Kryptik" family of Trojans. The "Kryptik" label is commonly applied to threats that use obfuscation or packing techniques to hide their true code and purpose from security scanners. Because detailed technical specifics for this particular detection are not available, the information below describes the typical behavior of Trojans in this category, which this threat is likely to share.

What This Threat Does

Like most Trojans, Trojan.Kryptik.Gen.GCC is designed to disguise itself as something harmless while performing malicious actions in the background. Typically, Kryptik-type Trojans can be used to deliver additional malware, steal sensitive information, give attackers remote access to the infected system, or modify system settings without the user's consent. Because the "Kryptik" naming convention often refers to generic, heavily obfuscated, or packed malicious code, the exact payload can vary from one infection to another, and may change over time as the malware is updated by its operators.

In general, Trojans in this category try to avoid detection, run quietly in the background, and may attempt to maintain persistence so they continue running even after the computer is restarted. Some variants may also try to disable or interfere with security software to avoid removal.

How It Usually Gets Onto Computers

Trojans of this type typically spread through common infection methods, including:

  • Malicious email attachments or links disguised as invoices, receipts, or other legitimate-looking documents
  • Fake software updates or cracked/pirated software downloads
  • Bundled installers from untrustworthy download sites
  • Compromised or malicious websites that trigger automatic downloads
  • Infected removable drives, such as USB sticks

Users often unknowingly install these Trojans by opening unexpected attachments, clicking on deceptive links, or downloading software from unofficial sources.

Risks for the User

If left on a system, a Trojan like this may expose the user to several risks, including:

  • Theft of personal, financial, or login information
  • Unauthorized remote access to the infected device
  • Installation of additional malware, such as ransomware or spyware
  • Reduced system performance due to background malicious activity
  • Compromised security settings, making the device more vulnerable to future attacks

Signs of Infection

Because Trojans are built to operate stealthily, there may be few or no obvious symptoms. However, possible warning signs can include:

  • Unexplained slowdowns or freezing of the computer
  • Unusual network activity or increased data usage
  • Security software being disabled or unable to update
  • Unexpected pop-ups, new toolbars, or changes to browser settings
  • Unknown programs or processes running without the user's knowledge

How to Stay Protected

To reduce the risk of infection from Trojans like this one, users should consider the following practices:

  • Avoid opening email attachments or clicking links from unknown or unexpected senders
  • Download software only from official or verified sources
  • Keep the operating system and installed applications up to date with security patches
  • Use reputable security software and keep it updated so it can detect evolving threats
  • Regularly back up important files to a separate, secure location
  • Be cautious with free downloads, cracked software, and suspicious pop-up offers

Because detections like Trojan.Kryptik.Gen.GCC are often generic and can represent a range of malicious behaviors, it is important to treat any such detection seriously and take prompt action to remove the threat and secure the affected system.

Analysis Report

General information

Family Name: Trojan.Kryptik.Gen.GCC
Signature status: No Signature

Known Samples

MD5: 048b233ca361b30f703945dd913d94f7
SHA1: eb127ff64e7eba31401238e72d42ed094e02aafa
SHA256: 858F5A4C68C0BA31BAFCF4C7F43CDF5C037628DD6D4E612328BA1F9ADDF51612
File Size: 411.23 KB, 411228 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have debug information
  • File doesn't have exports table
  • File doesn't have security information
  • File has TLS information
  • File is 64-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 More
  • IMAGE_FILE_DLL is not set inside PE header (Executable)
  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

File Traits

  • big overlay
  • HighEntropy
  • No Version Info
  • x64

Block Information

Total Blocks: 58
Potentially Malicious Blocks: 1
Whitelisted Blocks: 55
Unknown Blocks: 2

Visual Map

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

Similar Families

Show More
  • Trojan.Kryptik.Gen.JAX

Files Modified

File Attributes
c:\users\user\appdata\local\temp\tmp7d62.tmp Generic Read,Write Data,Write Attributes,Write extended,Append data
c:\users\user\downloads\amsi.dll Generic Write,Read Attributes
c:\users\user\downloads\pkr0hs21.dll Generic Write,Read Attributes

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAllocateLocallyUniqueId
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtApphelpCacheControl
  • ntdll.dll!NtClearEvent
  • ntdll.dll!NtClose
  • ntdll.dll!NtCreateEvent
  • ntdll.dll!NtCreateMutant
  • ntdll.dll!NtCreatePrivateNamespace
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtCreateSemaphore
Show More
  • ntdll.dll!NtCreateThreadEx
  • ntdll.dll!NtDelayExecution
  • ntdll.dll!NtDeviceIoControlFile
  • ntdll.dll!NtDuplicateObject
  • ntdll.dll!NtEnumerateKey
  • ntdll.dll!NtEnumerateValueKey
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtOpenDirectoryObject
  • ntdll.dll!NtOpenEvent
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenKeyEx
  • ntdll.dll!NtOpenProcess
  • ntdll.dll!NtOpenProcessToken
  • ntdll.dll!NtOpenSection
  • ntdll.dll!NtOpenThreadToken
  • ntdll.dll!NtProtectVirtualMemory
  • ntdll.dll!NtQueryAttributesFile
  • ntdll.dll!NtQueryDirectoryFileEx
  • ntdll.dll!NtQueryFullAttributesFile
  • ntdll.dll!NtQueryInformationFile
  • ntdll.dll!NtQueryInformationJobObject
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationThread
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQueryKey
  • ntdll.dll!NtQueryLicenseValue
  • ntdll.dll!NtQueryObject
  • ntdll.dll!NtQueryPerformanceCounter
  • ntdll.dll!NtQuerySecurityAttributesToken
  • ntdll.dll!NtQuerySecurityObject
  • ntdll.dll!NtQuerySystemInformation
  • ntdll.dll!NtQuerySystemInformationEx
  • ntdll.dll!NtQueryValueKey
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtQueryVolumeInformationFile
  • ntdll.dll!NtQueryWnfStateData
  • ntdll.dll!NtReadFile
  • ntdll.dll!NtReadRequestData
  • ntdll.dll!NtReleaseMutant
  • ntdll.dll!NtReleaseWorkerFactoryWorker
  • ntdll.dll!NtResumeThread
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationKey
  • ntdll.dll!NtSetInformationObject
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationThread
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtUnmapViewOfSection
  • ntdll.dll!NtUnmapViewOfSectionEx
  • ntdll.dll!NtWaitForMultipleObjects
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWaitForWorkViaWorkerFactory
  • ntdll.dll!NtWaitLowEventPair
  • ntdll.dll!NtWorkerFactoryWorkerReady
  • ntdll.dll!NtWriteFile
  • ntdll.dll!NtYieldExecution
  • UNKNOWN
User Data Access
  • GetUserDefaultLocaleName
  • GetUserObjectInformation
Encryption Used
  • BCryptOpenAlgorithmProvider
Anti Debug
  • IsDebuggerPresent
  • NtQuerySystemInformation