Threat Database Trojans Trojan.Kryptik.MGB

Trojan.Kryptik.MGB

By CagedTech in Trojans
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Trojan.Kryptik.MGB is a detection name used to identify a type of Trojan horse malware. Like other threats in the "Kryptik" family, this detection typically refers to malicious programs that have been obfuscated or packed in ways designed to make them harder for security tools to analyze and identify. Because specific details such as the exact origin, target operating systems, and discovery date are not confirmed for this particular detection, this article describes the typical behavior associated with Trojans of this category.

What This Threat Does

Trojans classified under the Kryptik family are generally designed to disguise their true purpose. The "Kryptik" label itself indicates that the malicious code is encrypted, packed, or otherwise hidden to evade detection by antivirus and anti-malware scanners. Once such a Trojan is active on a system, it may carry out a variety of harmful actions, which can include:

  • Downloading and installing additional malicious software without the user's knowledge
  • Collecting sensitive information such as login credentials, browsing habits, or system details
  • Modifying system settings or files to maintain persistence on the infected device
  • Allowing remote attackers to gain unauthorized access or control over the compromised computer
  • Disabling or interfering with security software to avoid removal

Because the exact payload of Trojan.Kryptik.MGB has not been specified, users should treat any detection of this threat as a serious warning sign that the system may be compromised in one or more of the ways typical of Trojan malware.

How It Usually Gets Onto Computers

Trojans in this category commonly spread through deceptive methods rather than self-replication. Typical infection routes include malicious email attachments, fake software updates, bundled downloads from untrustworthy websites, cracked or pirated software, and links embedded in phishing messages. Users are often tricked into manually executing the malicious file, believing it to be something legitimate, such as a document, installer, or media file.

Risks for the User

An active infection from a Trojan like this can expose users to significant risks, including theft of personal and financial information, unauthorized remote access to the device, installation of further malware such as ransomware or spyware, and degraded system performance. In some cases, infected systems may become part of a larger network controlled by attackers, used to carry out additional malicious activity without the owner's consent.

Signs of Infection

Because Trojans are built to operate quietly, infections are not always obvious. However, users may notice warning signs such as unusual slowdowns, unexpected pop-ups, unfamiliar programs or processes running in the background, changes to browser or system settings that were not made by the user, and security software being disabled or unable to update.

How to Stay Protected

To reduce the risk of infection from threats like Trojan.Kryptik.MGB, users should avoid opening email attachments or clicking links from unknown or unexpected sources, download software only from official and trusted websites, keep the operating system and all applications updated with the latest security patches, use reputable security software and keep it updated, and regularly back up important files to minimize damage in case of infection. Practicing caution online and staying alert to suspicious behavior remain the most effective defenses against this type of malware.

Analysis Report

General information

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

Known Samples

MD5: 3e32efb4785b1ce9ea9c462b6b6e79f8
SHA1: df8e1cf2eef64b22087541b038ac4157be06d14e
SHA256: 3D067744EC7124458D6EE36CBFA83D06885167F37BCB30C4CDB7A0513DE01CA2
File Size: 1.11 MB, 1105615 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 resources
  • 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)
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  • File is not packed
  • IMAGE_FILE_DLL is not set inside PE header (Executable)
  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

File Traits

  • No Version Info
  • ntdll
  • x64

Block Information

Total Blocks: 4,056
Potentially Malicious Blocks: 0
Whitelisted Blocks: 4,056
Unknown Blocks: 0

Visual Map

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... Data truncated
0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

Similar Families

  • Bulz.QE
  • Kryptik.MGB
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Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAlertThreadByThreadId
  • ntdll.dll!NtApphelpCacheControl
  • ntdll.dll!NtClose
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtCreateTimer2
  • ntdll.dll!NtDeviceIoControlFile
  • ntdll.dll!NtEnumerateValueKey
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtOpenEvent
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  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenKeyEx
  • ntdll.dll!NtOpenSection
  • ntdll.dll!NtProtectVirtualMemory
  • ntdll.dll!NtQueryAttributesFile
  • ntdll.dll!NtQueryEvent
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationThread
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQueryKey
  • ntdll.dll!NtQueryPerformanceCounter
  • ntdll.dll!NtQuerySecurityObject
  • ntdll.dll!NtQueryValueKey
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtReleaseWorkerFactoryWorker
  • ntdll.dll!NtRemoveIoCompletion
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationThread
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtSetTimerEx
  • ntdll.dll!NtTerminateProcess
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtWaitForAlertByThreadId
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWaitForWorkViaWorkerFactory
  • ntdll.dll!NtWriteFile
  • UNKNOWN
Cert Store Read
  • CertOpenStore
Network Winsock2
  • WSASocket
  • WSAStartup
Network Winsock
  • closesocket
  • connect
  • freeaddrinfo
  • getaddrinfo