Trojan.MSIL.Krypt.MBRH
Trojan.MSIL.Krypt.MBRH is a detection name used to identify a malicious program belonging to the broad Trojan category. The ".MSIL" portion of the name indicates that the threat was written using Microsoft's .NET framework (Microsoft Intermediate Language), a common development platform that many legitimate and malicious programs alike are built on. The "Krypt" element of the name suggests that the file has been encrypted, packed, or obfuscated in some way to make it harder for security tools to analyze and detect it. Specific technical details about this particular detection, such as its exact origin, release date, or targeted operating systems, are not available, so this article focuses on the general behavior typical of Trojans in this family.
Table of Contents
What This Threat Does
Like most Trojans, Trojan.MSIL.Krypt.MBRH is designed to disguise itself as a harmless or legitimate file while secretly performing malicious actions in the background. Because specific behavioral data for this exact detection is not confirmed, it is important to understand that Trojans in general can be used for a wide variety of purposes, including stealing sensitive information, downloading additional malware, allowing remote attackers to control the infected machine, logging keystrokes, modifying system settings, or using the infected computer's resources without the owner's consent. The "Krypt" obfuscation suggests that this particular sample may have been specifically engineered to evade antivirus detection for as long as possible, which is a typical trait of modern malware designed to remain undetected while carrying out its intended function.
How It Usually Gets Onto Computers
Trojans in this category typically spread through common infection vectors seen across the malware landscape. These usually include malicious email attachments disguised as invoices, receipts, or other official-looking documents; bundled downloads from unofficial or pirated software sources; fake software updates; cracked or "keygen" tools; malicious advertisements; and compromised websites that prompt users to download seemingly legitimate files. Because this is typical behavior for this type of threat rather than confirmed information about this specific detection, users should remain cautious of these common delivery methods regardless of the exact strain of malware involved.
Risks for the User
Trojans of this kind can pose a serious risk to both personal data and system integrity. Potential consequences typically associated with this category of malware include theft of personal or financial information, unauthorized remote access to the device, installation of additional malicious software, degraded system performance, and exposure of saved passwords or browsing data. In more severe cases, a Trojan can act as a gateway for ransomware or other damaging payloads to be installed on the affected system.
Signs of Infection
Because Trojans are built to operate stealthily, there may be few obvious symptoms. However, typical warning signs can include unexpected slowdowns, unfamiliar processes running in the background, programs or files that appear without the user's knowledge, unusual network activity, security software being disabled unexpectedly, or the system behaving erratically.
How to Stay Protected
Users can reduce their risk of infection by keeping their operating system and all software updated, avoiding downloads from unofficial or untrusted sources, being cautious with email attachments and links from unknown senders, and using reputable security software to scan files before opening them. Regularly backing up important data and avoiding pirated software or illegal download sites also significantly reduces exposure to threats like Trojan.MSIL.Krypt.MBRH and similar malware.
Analysis Report
General information
| Family Name: | Trojan.MSIL.Krypt.MBRH |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
25185c67a78b45b7c31925575e4e5761
SHA1:
142cf283571f8f6a40a0641335c59f61597d8ffe
SHA256:
4029F6A0EADFC260F393B88E66EF099DD3722A0CC43F7341DC464B6AB94804D7
File Size:
7.66 MB, 7664640 bytes
|
Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have exports table
- File doesn't have security information
- File is .NET application
- File is 32-bit executable
- File is either console or GUI application
- File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
- 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)
Windows PE Version Information
Windows PE Version Information
This section displays values and attributes that have been set in the Windows file version information data structure for samples within this family. To mislead users, malware actors often add fake version information mimicking legitimate software.| Name | Value |
|---|---|
| Assembly Version | 1.0.0.0 |
| Company Name | YmmiaV2 |
| File Description | YmmiaV2 |
| File Version | 1.0.0.0 |
| Internal Name | YmmiaV2.dll |
| Original Filename | YmmiaV2.dll |
| Product Name | YmmiaV2 |
| Product Version | 1.0.0 |
File Traits
- .NET
- Agile.net
- Fody
- HighEntropy
- ntdll
- x86
Block Information
Block Information
During analysis, EnigmaSoft breaks file samples into logical blocks for classification and comparison with other samples. Blocks can be used to generate malware detection rules and to group file samples into families based on shared source code, functionality and other distinguishing attributes and characteristics. This section lists a summary of this block data, as well as its classification by EnigmaSoft. A visual representation of the block data is also displayed, where available.| Total Blocks: | 1,012 |
|---|---|
| Potentially Malicious Blocks: | 623 |
| Whitelisted Blocks: | 375 |
| Unknown Blocks: | 14 |
Visual Map
? - Unknown Block
x - Potentially Malicious Block
Similar Families
Similar Families
This section lists other families that share similarities with this family, based on EnigmaSoft’s analysis. Many malware families are created from the same malware toolkits and use the same packing and encryption techniques but uniquely extend functionality. Similar families may also share source code, attributes, icons, subcomponents, compromised and/or invalid digital signatures, and network characteristics. Researchers leverage these similarities to rapidly and effectively triage file samples and extend malware detection rules.- MSIL.Gamehack.BFG
- MSIL.Krypt.MBRH
Windows API Usage
Windows API Usage
This section lists Windows API calls that are used by the samples in this family. Windows API usage analysis is a valuable tool that can help identify malicious activity, such as keylogging, security privilege escalation, data encryption, data exfiltration, interference with antivirus software, and network request manipulation.| Category | API |
|---|---|
| Syscall Use |
Show More
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| User Data Access |
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