Trojan.Downloader.CN
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.
| Threat Level: | 80 % (High) |
| Infected Computers: | 167 |
| First Seen: | November 6, 2021 |
| Last Seen: | October 17, 2026 |
| OS(es) Affected: | Windows |
The detection of Trojan.Downloader.CN on your system indicates a potential security threat that requires immediate attention. This type of malware is designed to download and install additional malicious software on your computer, which can lead to a range of problems, including data theft, system crashes, and unauthorized access to your personal information. It is essential to understand the nature of this threat and take prompt action to remove it from your system.
Table of Contents
What Is Trojan.Downloader.CN?
Trojan.Downloader.CN is a type of Trojan horse malware that is designed to download and install additional malicious software on your computer. The name "Trojan" refers to the fact that this type of malware disguises itself as a legitimate program or file, allowing it to evade detection and gain access to your system. The ".CN" suffix may indicate a specific variant or classification of the malware, but it is not a definitive indicator of its origin or purpose.
How Trojan.Downloader.CN Operates
Trojan.Downloader.CN typically operates by exploiting vulnerabilities in your system or tricking you into downloading and installing it. Once installed, it can connect to a remote server to download and install additional malware, which can include viruses, spyware, adware, and other types of malicious software. This can lead to a range of problems, including data theft, system crashes, and unauthorized access to your personal information. Trojan.Downloader.CN may also attempt to disable your antivirus software or other security measures to prevent detection and removal.
Symptoms of Infection
The symptoms of a Trojan.Downloader.CN infection can vary, but common indicators include slow system performance, unexpected pop-ups or advertisements, and unfamiliar programs or icons on your desktop. You may also notice that your antivirus software is disabled or that your system is crashing frequently. In some cases, you may not notice any symptoms at all, which is why it is essential to run regular virus scans and maintain up-to-date antivirus software.
How to Remove Trojan.Downloader.CN
- Boot your system in Safe Mode with Networking to prevent the malware from loading and to allow you to download and install removal tools.
- Download and install a reputable antivirus tool, such as SpyHunter, and run a full scan of your system to detect and remove the malware.
- Uninstall any suspicious programs or applications that you do not recognize or that were installed recently.
- Reset your web browsers, including Chrome, Firefox, and Edge, to their default settings to remove any malicious extensions or add-ons.
- Reboot your system and run another full scan with your antivirus software to ensure that the malware has been completely removed.
Conclusion
Removing Trojan.Downloader.CN from your system requires prompt action and a thorough approach. By following the steps outlined above, you can help to ensure that your system is clean and secure. It is also essential to maintain good security practices, including running regular virus scans, keeping your operating system and software up to date, and being cautious when downloading and installing programs or files from the internet. By taking these steps, you can help to protect your system and your personal information from the risks associated with Trojan.Downloader.CN and other types of malware.
Analysis Report
General information
| Family Name: | Trojan.Downloader.CN |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
c0b3b44c311c540947d60f58d5063b2f
SHA1:
cbc4bce38d6a9afca420ea0d093b394c3ceb6271
SHA256:
BFFCB094E24C891EC242A90D49017514F14E64D4895805A58233E0B98E362AA1
File Size:
7.75 MB, 7749368 bytes
|
|
MD5:
b688d95b6084c919a2f7db5b40e130c0
SHA1:
aae293d26dfb25cfb42131751a234e78c17652e3
SHA256:
E95221BDDBC3374088E7740A26C1D1A017DC79C0BE22D168BCDAED7416AC781F
File Size:
1.55 MB, 1553463 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 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
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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 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 |
|---|---|
| File Description | Zapya Install Program |
| File Version | 1.0.0.0 |
| Legal Copyright | Copyright©2011-2014 DewMobile,Inc. |
| Legal Trademarks | Zapya,kuaiya,快牙 |
| Product Name |
|
| Product Version | 1.7.0.0 |
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 |
|---|---|---|
| DewMobile USA , Inc. | COMODO RSA Code Signing CA | Self Signed |
File Traits
- 2+ executable sections
- big overlay
- HighEntropy
- Installer Version
- 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: | 465 |
|---|---|
| Potentially Malicious Blocks: | 19 |
| Whitelisted Blocks: | 439 |
| Unknown Blocks: | 7 |
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:\users\user\appdata\local\temp\richedit1 | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\zapya_common_checkbox_default.png | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\zapya_common_checkbox_selected.png | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\zapya_common_input_frame.png | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\zapya_common_input_modify_default.png | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\zapya_common_input_modify_pressed.png | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\zapya_install_bg.png | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\zapya_install_bg2.png | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\zapya_install_bg3.png | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\zapya_install_bt_imsetup_default.png | Generic Read,Write Data,Write Attributes,Write extended,Append data |
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| c:\users\user\appdata\local\temp\zapya_install_bt_imsetup_focused.png | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\zapya_install_bt_normal.png | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\zapya_install_bt_pressed.png | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\zapya_install_bt_return_default.png | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\zapya_install_bt_return_focused.png | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\zapya_install_close.png | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\zapya_install_close_pressed.png | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\zapya_install_confirm_default.png.png | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\zapya_install_confirm_pressed.png.png | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\zapya_install_launch_normal_completed.png | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\zapya_install_launch_pressed_completed.png | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\zapya_install_progress.jpg | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\{5beb75bb-d08f-4258-b2c8-7f7ed3cbf5ce}\is\1361.xs | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\{5beb75bb-d08f-4258-b2c8-7f7ed3cbf5ce}\is\1506.xs | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\{5beb75bb-d08f-4258-b2c8-7f7ed3cbf5ce}\isshell.dat | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\{5beb75bb-d08f-4258-b2c8-7f7ed3cbf5ce}\res\1525.jpg | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\{5beb75bb-d08f-4258-b2c8-7f7ed3cbf5ce}\res\7805.jpg | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\{8257153b-4482-4f74-9676-e3f6bc330629}\is\1594.xs | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\{8257153b-4482-4f74-9676-e3f6bc330629}\isshell.dll | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\{8257153b-4482-4f74-9676-e3f6bc330629}\res\5205.jpg | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\{8257153b-4482-4f74-9676-e3f6bc330629}\res\5788.jpg | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\{8257153b-4482-4f74-9676-e3f6bc330629}\res\9592.jpg | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\{98d9c9dc-2e58-4d24-942a-e4ad7a3135b4}.dat | Generic Read,Write Data,Write Attributes,Write extended,Append data |
