Trojan.Stealer.YC
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: | 16,457 |
| Threat Level: | 80 % (High) |
| Infected Computers: | 538 |
| First Seen: | November 27, 2023 |
| Last Seen: | June 29, 2026 |
| OS(es) Affected: | Windows |
The detection of Trojan.Stealer.YC on your system indicates a potential security threat that requires immediate attention. This report aims to provide you with a comprehensive understanding of the threat, its operational methods, symptoms of infection, and most importantly, guidance on how to remove it from your computer.
Table of Contents
What Is Trojan.Stealer.YC?
Trojan.Stealer.YC is identified as a Trojan-type threat. Trojans are malicious programs that can sneak onto your computer and perform a variety of harmful actions. They are often disguised as legitimate software, making them difficult to detect. The name "Trojan.Stealer.YC" suggests it might be designed to steal sensitive information from the infected computer, but without specific details, it's crucial to approach the situation with a general understanding of Trojan behaviors and removal strategies.
How Trojan.Stealer.YC Operates
Trojans like Trojan.Stealer.YC typically operate by exploiting vulnerabilities in software or tricking users into installing them. Once installed, they can create backdoors for remote access, allowing attackers to control the infected system, steal data, or use the computer for malicious activities such as spreading malware or participating in botnets. The exact operational details of Trojan.Stealer.YC are not specified, but understanding the general modus operandi of Trojans helps in devising an effective removal strategy.
Symptoms of Infection
Infected computers may exhibit a range of symptoms, including but not limited to, unusual slowdowns, frequent crashes, unfamiliar programs or icons, and unexpected changes in system settings. Users might also notice increased network activity, even when no programs are running, or find that their personal files have been encrypted or stolen. However, some Trojans can operate silently, making them harder to detect without proper security software.
How to Remove Trojan.Stealer.YC
- Enter Safe Mode with Networking: This will limit the malware's ability to interfere with the removal process while still allowing you to download necessary tools.
- Perform a Full Scan: Use a reputable anti-malware tool, such as SpyHunter, to scan your computer for any malicious software. Ensure the tool is updated with the latest definitions for the best results.
- Uninstall Suspicious Programs: Go through your installed programs and remove any that you do not recognize or that were installed around the time you noticed the infection.
- Reset Your Browser: If your browser (such as Chrome, Firefox, or Edge) has been affected, resetting it to its default settings can help remove any malicious extensions or settings changes. Be aware that this will also remove any saved passwords and extensions you have installed.
- Reboot and Re-scan: After completing the above steps, restart your computer and perform another full scan to ensure that no remnants of the malware remain.
Conclusion
Removing Trojan.Stealer.YC requires a combination of technical knowledge and the right tools. By following the steps outlined above and maintaining vigilance in your online activities, you can protect your computer from similar threats in the future. Regularly updating your operating system, applications, and security software, along with being cautious when opening email attachments or downloading software from the internet, are key practices in preventing malware infections. If you're unsure about any part of the removal process, consider seeking help from a professional to ensure your system is thoroughly cleaned and secured.
Analysis Report
General information
| Family Name: | Trojan.Stealer.YC |
|---|---|
| Signature status: | Modified signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
e7dfdf5eba23dc4d65b18af4779d3c69
SHA1:
213926a1fbe69dc1e07c37907c95505a1a792649
SHA256:
81E484C03F0AB8F21A72E919BB5663212FEC97878B46A5D365E5E118FDF90F1A
File Size:
2.45 MB, 2445631 bytes
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MD5:
9731786455b1037f9a39a9181291a0e9
SHA1:
d5f93cb853886ef714155d428ef000c200633834
SHA256:
664DDC752ACC07F7C9ED960D387F3E1D1C985B285AD45743A5407698A508D144
File Size:
2.37 MB, 2367352 bytes
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MD5:
60baae4028249e3375c3062fe279e1cd
SHA1:
15b5f788a62a858260ebdbce920263ec1f19e84a
SHA256:
8EFCC60752A9E140F6900EF262E5BCEBFB8F3F921B7EE356638310BC0BA680C0
File Size:
2.43 MB, 2432888 bytes
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MD5:
93c1a4e84b01e66e10ddb7feea8be9e9
SHA1:
73b441c603abe4ca9aa37d10b922b639595e2de2
SHA256:
613FB5FC132A1117486F5213A039E4EDDEFB37F8CE1D9DFCCC7B0FE5C9036160
File Size:
2.25 MB, 2254336 bytes
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Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have exports table
- File doesn't have relocations information
- File has TLS information
- File is 32-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
- IMAGE_FILE_DLL is not set inside PE header (Executable)
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- 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 |
|---|---|
| Company Name | Microsoft Corporation |
| File Description |
|
| File Version | 21.220.1024.0005 |
| Internal Name | Client Application |
| Legal Copyright | © Microsoft Corporation. All rights reserved. |
| Original Filename |
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| Product Name |
|
| Product Version | 21.220.1024.0005 |
| Special Build | b/build/2c205c5c-e050-0ffd-f7d0-63786687edbc |
Digital Signatures
Digital Signatures
This section lists digital signatures that are attached to samples within this family. When analyzing and verifying digital signatures, it is important to confirm that the signature’s root authority is a well-known and trustworthy entity and that the status of the signature is good. Malware is often signed with non-trustworthy “Self Signed” digital signatures (which can be easily created by a malware author with no verification). Malware may also be signed by legitimate signatures that have an invalid status, and by signatures from questionable root authorities with fake or misleading “Signer” names.| Signer | Root | Status |
|---|---|---|
| Microsoft Corporation | Microsoft Code Signing PCA 2010 | Hash Mismatch |
File Traits
- 2+ executable sections
- big overlay
- 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: | 2,546 |
|---|---|
| Potentially Malicious Blocks: | 258 |
| Whitelisted Blocks: | 2,231 |
| Unknown Blocks: | 57 |
Visual Map
? - Unknown Block
x - Potentially Malicious Block
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:\windows\20bc9d | Generic Write,Read Attributes |
| c:\windows\system.ini | 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 |
|---|---|---|
| HKCU\software\microsoft\onedrive::repairattempted | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\explorer\advanced::hidden | RegNtPreCreateKey | |
| HKLM\software\wow6432node\microsoft\security center::antivirusoverride | RegNtPreCreateKey | |
| HKLM\software\wow6432node\microsoft\security center::antivirusdisablenotify | RegNtPreCreateKey | |
| HKLM\software\wow6432node\microsoft\security center::firewalldisablenotify | RegNtPreCreateKey | |
| HKLM\software\wow6432node\microsoft\security center::firewalloverride | RegNtPreCreateKey | |
| HKLM\software\wow6432node\microsoft\security center::updatesdisablenotify | RegNtPreCreateKey | |
| HKLM\software\wow6432node\microsoft\security center::uacdisablenotify | RegNtPreCreateKey | |
| HKLM\software\wow6432node\microsoft\security center\svc::antivirusoverride | RegNtPreCreateKey | |
| HKLM\software\wow6432node\microsoft\security center\svc::antivirusdisablenotify | RegNtPreCreateKey |
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| HKLM\software\wow6432node\microsoft\security center\svc::firewalldisablenotify | RegNtPreCreateKey | |
| HKLM\software\wow6432node\microsoft\security center\svc::firewalloverride | RegNtPreCreateKey | |
| HKLM\software\wow6432node\microsoft\security center\svc::updatesdisablenotify | RegNtPreCreateKey | |
| HKLM\software\wow6432node\microsoft\security center\svc::uacdisablenotify | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings::globaluseroffline | RegNtPreCreateKey | |
| HKLM\software\microsoft\windows\currentversion\policies\system::enablelua | RegNtPreCreateKey | |
| HKLM\system\controlset001\services\sharedaccess\parameters\firewallpolicy\standardprofile::enablefirewall | RegNtPreCreateKey | |
| HKLM\system\controlset001\services\sharedaccess\parameters\firewallpolicy\standardprofile::donotallowexceptions | RegNtPreCreateKey | |
| HKLM\system\controlset001\services\sharedaccess\parameters\firewallpolicy\standardprofile::disablenotifications | RegNtPreCreateKey | |
| HKCU\software\stvncyfrlda::m1_0 | | RegNtPreCreateKey |
| HKCU\software\stvncyfrlda::m2_0 | RegNtPreCreateKey | |
| HKCU\software\stvncyfrlda::m3_0 | 権ă | RegNtPreCreateKey |
| HKCU\software\stvncyfrlda::m4_0 | RegNtPreCreateKey | |
| HKCU\software\stvncyfrlda\168128873::1735290733 | 䄔 | RegNtPreCreateKey |
| HKCU\software\stvncyfrlda\168128873::-824385830 | RegNtPreCreateKey | |
| HKCU\software\stvncyfrlda\168128873::910904903 | RegNtPreCreateKey | |
| HKCU\software\stvncyfrlda\168128873::-1648771660 | # | RegNtPreCreateKey |
| HKCU\software\stvncyfrlda\168128873::86519073 | = | RegNtPreCreateKey |
| HKCU\software\stvncyfrlda\168128873::1821809806 | http://gatheredovertime.com/nb4 http://imagebucket.biz/nv4 | RegNtPreCreateKey |
| HKCU\software\stvncyfrlda\168128873::-737866757 | � ��;��nB� DK=�ҍ���3�LT��o~��S[]sٌ���+/�NN� �aUc\F9�|j� | 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 |
|---|---|
| Process Shell Execute |
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Shell Command Execution
Shell Command Execution
This section lists Windows shell commands that are run by the samples in this family. Windows Shell commands are often leveraged by malware for nefarious purposes and can be used to elevate security privileges, download and launch other malware, exploit vulnerabilities, collect and exfiltrate data, and hide malicious activity.
C:\Users\Tekqxlpb\AppData\Local\Microsoft\OneDrive\OneDriveStandaloneUpdater.exe OneDriveStandaloneUpdater.exe /repair:21.220.1024.0005 /OneDrivePid:3180
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C:\Users\Rhcfmork\AppData\Local\Microsoft\OneDrive\OneDriveStandaloneUpdater.exe OneDriveStandaloneUpdater.exe /repair:21.220.1024.0005 /OneDrivePid:6040
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