Trojan.Dropper.Agent.DO
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: | 22,247 |
| Threat Level: | 80 % (High) |
| Infected Computers: | 1,062 |
| First Seen: | August 16, 2021 |
| Last Seen: | May 3, 2026 |
| OS(es) Affected: | Windows |
The detection of Trojan.Dropper.Agent.DO on your system indicates a potential security threat that requires immediate attention. This type of malware is designed to compromise the security of your computer, allowing unauthorized access and potentially leading to further malicious activities. It is essential to understand the nature of this threat and take appropriate steps to remove it and prevent future infections.
Table of Contents
What Is Trojan.Dropper.Agent.DO?
Trojan.Dropper.Agent.DO is a type of Trojan horse malware, which is a broad category of malicious software that disguises itself as legitimate programs. The term "Trojan" refers to the way this malware operates, by deceiving users into installing it on their systems. The "Dropper" part of the name suggests that this malware is capable of dropping or installing additional malicious components onto the infected system. Understanding the nature of this threat is crucial for effective removal and prevention.
How Trojan.Dropper.Agent.DO Operates
Trojan.Dropper.Agent.DO, like other Trojans, can operate in various ways, depending on its design and the intentions of its creators. Typically, Trojans are spread through deceptive means, such as being bundled with free software, attached to spam emails, or downloaded from untrustworthy websites. Once installed, the malware can create backdoors, allowing remote access to the infected system. This access can be used for a variety of malicious purposes, including data theft, installation of additional malware, or using the system as part of a botnet for distributed denial-of-service (DDoS) attacks or spamming.
Symptoms of Infection
The symptoms of a Trojan.Dropper.Agent.DO infection can vary widely, depending on the specific goals of the malware and the extent of the infection. Common signs include unusual system behavior, such as slow performance, frequent crashes, or unfamiliar programs and icons appearing on the desktop. You might also notice increased network activity, even when you're not using the internet, or find that your antivirus software is disabled. In some cases, there may be no noticeable symptoms at all, making regular system scans crucial for detection.
How to Remove Trojan.Dropper.Agent.DO
- Enter Safe Mode with Networking to prevent the malware from interfering with the removal process. This mode allows you to use the internet to download removal tools while limiting the malware's ability to run.
- Download and run a full scan with a reputable anti-malware tool, such as SpyHunter. Ensure the tool is updated to the latest version to increase the chances of detecting and removing the malware.
- Uninstall any suspicious programs that you do not recognize or that were installed around the time the malware was detected. Be cautious and only remove programs you are sure are not essential to your system's operation.
- Reset your web browsers (Chrome, Firefox, Edge, etc.) to their default settings. This can help remove any malicious extensions or settings changes made by the malware.
- Reboot your system and perform another full scan with your anti-malware tool to ensure that the malware has been completely removed. Repeat the scan a few days later as a precautionary measure to confirm the system is clean.
Conclusion
Removing Trojan.Dropper.Agent.DO requires careful and systematic steps to ensure the malware is completely eradicated from your system. It's also crucial to adopt preventive measures, such as keeping your operating system and software up to date, using strong antivirus protection, and being cautious when downloading and installing software. Regular system scans and backups can also help in early detection and recovery. By understanding the nature of this threat and taking the right steps, you can protect your system and data from the potential harm caused by Trojan.Dropper.Agent.DO and similar malware.
Analysis Report
General information
| Family Name: | Trojan.Dropper.Agent.DO |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
0c05649a25380d123032025e62ea4253
SHA1:
07012e7a566e8c89313ffce074f9322a3cef021b
SHA256:
CCC3CE503039A4CD02FE5AD6C3E31B7552DE9737E94040DBD2B030241B4DDC7A
File Size:
519.17 KB, 519169 bytes
|
Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have exports table
- File doesn't have security information
- File has TLS information
- File is 64-bit executable
- File is console application (IMAGE_SUBSYSTEM_WINDOWS_CUI)
- File is either console or GUI application
- 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 Traits
- No Version Info
- ntdll
- 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: | 1,032 |
|---|---|
| Potentially Malicious Blocks: | 46 |
| Whitelisted Blocks: | 986 |
| Unknown Blocks: | 0 |
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\vvjyvtxwezmjgzaqlwjznhyvsuusj | Generic Write,Read Attributes |
| c:\windows\softwaredistribution\download\1ct4r.exe | Generic Read,Generic Execute,Write Data,Write Attributes,Write extended,Append data,Delete,LEFT 786496 |
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 | 褽⟙ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe | 횘襉⟙ǜ | RegNtPreCreateKey |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::proxybypass | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::intranetname | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::uncasintranet | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::autodetect | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::proxybypass | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::intranetname | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::uncasintranet | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::autodetect | RegNtPreCreateKey |
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| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | 폇覇⟙ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\vvjyvtxwezmjgzaqlwjznhyvsuusj::imagepath | \??\C:\Users\Ofobmuox\AppData\Local\Temp\vVJyvtxWezMjgzaQlwjZNhyvSUUSj | RegNtPreCreateKey |
| HKLM\system\controlset001\services\vvjyvtxwezmjgzaqlwjznhyvsuusj::type | 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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84 additional items are not displayed above. |
| Process Shell Execute |
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| Process Manipulation Evasion |
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| Anti Debug |
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| User Data Access |
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| Process Terminate |
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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:\WINDOWS\system32\cmd.exe C:\WINDOWS\system32\cmd.exe /c cls
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C:\WINDOWS\system32\cmd.exe C:\WINDOWS\system32\cmd.exe /c color 9
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runas C:\WINDOWS\SoftwareDistribution\Download\1ct4R.exe
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