Backdoor.MSIL.Agent.LIS
Threat Scorecard
EnigmaSoft Threat Scorecard
EnigmaSoft Threat Scorecards are assessment reports for different malware threats which have been collected and analyzed by our research team. EnigmaSoft Threat Scorecards evaluate and rank threats using several metrics including real-world and potential risk factors, trends, frequency, prevalence, and persistence. EnigmaSoft Threat Scorecards are updated regularly based on our research data and metrics and are useful for a wide range of computer users, from end users seeking solutions to remove malware from their systems to security experts analyzing threats.
EnigmaSoft Threat Scorecards display a variety of useful information, including:
Popularity Rank: The ranking of a particular threat in EnigmaSoft’s Threat Database.
Severity Level: The determined severity level of an object, represented numerically, based on our risk modeling process and research, as explained in our Threat Assessment Criteria.
Infected Computers: The number of confirmed and suspected cases of a particular threat detected on infected computers as reported by SpyHunter.
See also Threat Assessment Criteria.
| Popularity Rank: | 23,809 |
| Threat Level: | 60 % (Medium) |
| First Seen: | December 3, 2024 |
| Last Seen: | September 5, 2026 |
| OS(es) Affected: | Windows |
Backdoor.MSIL.Agent.LIS is a malicious program classified as a backdoor, designed to give remote attackers unauthorized access to an infected Windows computer. Built on the .NET framework, this threat is capable of quietly operating in the background while bypassing normal authentication processes, making it a serious security risk for anyone whose system becomes infected.
Table of Contents
What Backdoor.MSIL.Agent.LIS Does
Once active on a system, Backdoor.MSIL.Agent.LIS works to establish a hidden channel that allows cybercriminals to remotely control the compromised machine. It may exploit vulnerabilities found in other installed programs to gain a foothold and bypass security checks that would normally prevent unauthorized access. This backdoor is often disguised to look like a legitimate installed application, which helps it avoid drawing attention from the user while it carries out its malicious functions.
Technical analysis shows that this threat includes anti-debugging techniques, such as checking for the presence of debugging tools and querying system information, which are commonly used by malware to detect if it is being analyzed by security researchers or running in a monitored environment. It has also been observed accessing user-related data on the system, such as locale and user object information, which can be used by attackers to profile the infected machine. The file itself does not carry a digital signature, a common trait among threats attempting to appear less suspicious while avoiding the trust indicators of legitimately signed software.
How It Usually Spreads
Like most backdoors in this category, Backdoor.MSIL.Agent.LIS typically does not arrive through a single, obvious method. Instead, such threats commonly spread via bundled downloads, pirated software, fake installers, malicious email attachments, or infected links disguised as legitimate programs or updates. In some cases, backdoors of this type are delivered through rootkits, worms, or other malware already present on a system, or by exploiting unpatched vulnerabilities in installed software. Because it can masquerade as a normal application, users may unknowingly install it themselves, believing it to be a harmless or useful program.
Risks for the User
The presence of a backdoor like this on a computer is a serious concern because it essentially hands control of the system over to unknown third parties. Once installed, attackers may be able to monitor activity, steal sensitive information, install additional malware, or use the compromised machine as a launching point for further attacks. Because backdoors are designed to work covertly, an infected user may remain unaware of the intrusion for an extended period, increasing the potential for data theft, financial loss, or further system compromise.
Signs of Infection
Backdoors are built to avoid detection, so obvious symptoms are not always present. However, users should watch for unexplained system slowdowns, unfamiliar processes running in the background, unexpected network activity, programs behaving erratically, or new applications appearing that were never intentionally installed. Any unusual or unauthorized remote access attempts should also be treated as a potential warning sign.
How to Stay Protected
Keeping the operating system and all installed software fully updated helps close the vulnerabilities that backdoors often exploit. Users should avoid downloading software from untrusted sources, be cautious with email attachments and links from unknown senders, and avoid pirated or cracked applications. Running reputable, up-to-date security software and performing regular system scans is strongly recommended to detect and remove threats like Backdoor.MSIL.Agent.LIS before they can cause lasting harm.
Analysis Report
General information
| Family Name: | Backdoor.MSIL.Agent.LIS |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
70f2e476eeceb324b59f215b340c37a7
SHA1:
fb9944b5e86f277a6bec9367907a475ea43cc918
SHA256:
C4919A3F1F23CD6D4C9B54EF92868FECC02608EFF243A926D587F48357E17609
File Size:
833.02 KB, 833024 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 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)
Show 1 more
- IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)
File Icons
File Icons
This section displays icon resources found within family samples. Malware often replicates icons commonly associated with legitimate software to mislead users into believing the malware is safe.
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 | 4.0.0.0 |
| Comments | Kviskoteka |
| Company Name | Kviskoteka |
| File Description | Kviskoteka |
| File Version | 1.0.0.0 |
| Internal Name | sqKL.exe |
| Original Filename | sqKL.exe |
| Product Version | 1.0.0.0 |
File Traits
- .NET
- HighEntropy
- 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: | 147 |
|---|---|
| Potentially Malicious Blocks: | 103 |
| Whitelisted Blocks: | 44 |
| Unknown Blocks: | 0 |
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.Agent.LIS
- MSIL.Krypt.RPF
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 |
|---|---|
| User Data Access |
|
| Anti Debug |
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