Trojan.Kryptik.AFPA
Trojan.Kryptik.AFPA is a detection name used to identify a trojan threat that behaves in ways typical of the broader "Kryptik" family of malware. The "Kryptik" label generally refers to trojans that are packed or obfuscated to make them harder for security tools to analyze and detect, rather than a single, specific piece of malware with one fixed purpose. Because detailed public data about this particular variant is limited, this article describes the behavior that is typical of trojans in this category, rather than presenting unconfirmed details as confirmed fact.
Table of Contents
What This Threat Does
Like most trojans, Trojan.Kryptik.AFPA is designed to disguise itself as a legitimate or harmless file while secretly carrying out malicious actions in the background. Trojans in this category commonly attempt to download additional malicious components, modify system settings, collect information from the infected device, or grant remote attackers some level of control over the compromised machine. Some variants may also try to disable or interfere with security software to avoid detection and removal, and many are built with obfuscation techniques specifically to evade antivirus scanning.
How It Usually Gets Onto Computers
Trojans of this type typically spread through methods common to the broader trojan category. These usually include malicious email attachments, deceptive links in spam or phishing messages, bundled downloads from untrustworthy or pirated software sources, fake software updates, and malicious advertisements. Users may unknowingly install the trojan by opening an infected file, enabling macros in a malicious document, or downloading cracked software or key generators from unofficial websites.
Risks for the User
Once active on a system, a trojan like this can expose the user to a range of risks. These commonly include theft of personal or financial information, unauthorized remote access to the infected device, installation of additional malware such as ransomware or spyware, degraded system performance, and potential loss of control over personal accounts if login credentials are captured. Because trojans operate quietly, the damage can accumulate before the user becomes aware that anything is wrong.
Signs of Infection
Trojan infections are often difficult to notice because they are designed to stay hidden, but there are some warning signs that are typical of this category of threat:
- Unexpected slowdowns in system performance or increased CPU and memory usage
- Unfamiliar processes running in the background
- Security software being disabled or failing to update
- Unusual network activity or data usage
- New or unexpected programs appearing without the user's knowledge
- Browser settings or homepage changes that were not made by the user
How to Stay Protected
Protecting against trojans like this one involves following safe computing habits consistently. Users should avoid opening email attachments or clicking links from unknown or unexpected senders, download software only from official or verified sources, and keep their operating system and applications updated with the latest security patches. Running reputable, up-to-date security software and performing regular system scans can help detect and remove threats before they cause significant harm. Maintaining regular backups of important files also reduces the impact of any malware infection, since compromised data can be restored without paying attackers or losing valuable information.
Analysis Report
General information
| Family Name: | Trojan.Kryptik.AFPA |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
b16fadffd6e923f951397b70d89578cc
SHA1:
7e66511d43e4562a9749b1cadb848505141015d9
SHA256:
F41C9A278474BE33AE2AA6744E12A77D3F12F189AA516AD4057BFEDE7E007698
File Size:
6.44 MB, 6440448 bytes
|
Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have resources
- File doesn't have security information
- File has exports table
- 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
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- IMAGE_FILE_DLL is not set inside PE header (Executable)
- IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)
File Traits
- dll
- imgui
- x64
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: | 12,162 |
|---|---|
| Potentially Malicious Blocks: | 3,038 |
| Whitelisted Blocks: | 8,440 |
| Unknown Blocks: | 684 |
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.- Kryptik.AFPA
Files Modified
Files Modified
This section lists files that were created, modified, moved and/or deleted by samples in this family. File system activity can provide valuable insight into how malware functions on the operating system.| File | Attributes |
|---|---|
| c:\users\user\appdata\local\microsoft\windows\usrclass.dat{dba6b5ef-640a-11ed-9bcb-f677369d361c}.txr.1.regtrans-ms | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\microsoft\windows\usrclass.dat{dba6b5ef-640a-11ed-9bcb-f677369d361c}.txr.2.regtrans-ms | Generic Read,Write Data,Write Attributes,Write extended,Append data |
Registry Modifications
Registry Modifications
This section lists registry keys and values that were created, modified and/or deleted by samples in this family. Windows Registry activity can provide valuable insight into malware functionality. Additionally, malware often creates registry values to allow itself to automatically start and indefinitely persist after an initial infection has compromised the system.| Key::Value | Data | API Name |
|---|---|---|
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe | ꑵԾ佦ǝ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | 椓Ճ佦ǝ | RegNtPreCreateKey |
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 |
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| Anti Debug |
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| User Data Access |
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| Process Terminate |
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