Trojan.Downloader.Gen.AUR
Trojan.Downloader.Gen.AUR is a generic detection name used to identify a type of Trojan downloader that security tools have flagged on a system. Because this is a generic classification, it may represent a family of related threats rather than a single, specific piece of malware. Regardless of the exact variant, its core purpose is the same as other Trojan downloaders: to quietly place additional malicious software onto an infected computer without the user's knowledge or consent.
Table of Contents
What This Threat Does
As is typical for Trojan downloaders, Trojan.Downloader.Gen.AUR is not designed to cause damage on its own. Instead, it acts as a delivery mechanism. Once active on a system, it typically attempts to contact a remote server controlled by cybercriminals and download further malicious payloads. These secondary infections can include spyware, ransomware, adware, banking Trojans, or other forms of malware, depending on what the attackers behind the campaign intend to achieve.
Trojan downloaders like this one often try to operate silently in the background, avoiding obvious symptoms so they can continue retrieving and installing additional threats for as long as possible. They may also attempt to modify system settings, create new files, or establish persistence mechanisms so they continue running even after a computer is restarted.
How It Usually Gets Onto Computers
Trojan downloaders typically spread through deceptive or indirect methods rather than by exploiting technical flaws alone. Common infection paths for this category of threat generally include:
- Malicious email attachments or links disguised as invoices, shipping notices, or other legitimate-looking documents
- Bundled installers for free or pirated software downloaded from untrustworthy websites
- Fake software updates or cracked versions of popular programs
- Compromised or malicious websites that trigger automatic downloads
- Infected removable drives, such as USB sticks
Because these distribution methods rely heavily on tricking the user into taking some action, such as opening a file or clicking a link, careful online behavior plays a major role in avoiding infections of this kind.
Risks for the User
The main danger of a Trojan downloader lies in what it brings onto the system afterward. Since Trojan.Downloader.Gen.AUR's job is to fetch other malware, an infected computer could end up hosting threats that steal personal and financial information, encrypt files for ransom, hijack the browser, or turn the machine into part of a botnet used for further attacks. Users may also experience degraded system performance, unexpected network activity, and increased exposure to privacy violations as a result.
Signs of Infection
Trojan downloaders are built to be stealthy, so there may be few obvious warning signs. However, users might notice unusual network traffic, unexpected programs appearing on the system, slower performance, increased CPU or disk usage without a clear cause, security software being disabled unexpectedly, or new unfamiliar processes running in the background.
How to Stay Protected
To reduce the risk of encountering threats like Trojan.Downloader.Gen.AUR, users should avoid opening email attachments or links from unknown or unexpected senders, download software only from official sources, keep the operating system and applications updated, and avoid pirated software and cracking tools. Running reputable, up-to-date security software and performing regular system scans can help detect and remove such threats before they have a chance to download additional malicious payloads. Maintaining regular backups of important files also helps limit the damage if a system does become compromised.
Analysis Report
General information
| Family Name: | Trojan.Downloader.Gen.AUR |
|---|---|
| Signature status: | Hash Mismatch |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
01dc40c8eed7ca14008da6adfb4eb476
SHA1:
6db3344864e00e7cbd27fa212a89b7db0e23d0f2
SHA256:
AD7AE1DF63DC9F6EE4EABBEB4E9C0F98B2A1B1D69AD8BDE9B564E998678310C4
File Size:
188.48 KB, 188480 bytes
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Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File has exports table
- 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)
- IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)
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 | Microsoft.VisualStudio.QualityTools.VideoRecorderEngine.dll |
| File Version | 17.0.36101.15 built by: d17.14 |
| Internal Name | Microsoft.VisualStudio.QualityTools.VideoRecorderEngine.dll |
| Legal Copyright | © Microsoft Corporation. All rights reserved. |
| Original Filename | Microsoft.VisualStudio.QualityTools.VideoRecorderEngine.dll |
| Product Name | Microsoft® Visual Studio® |
| Product Version | 17.0.36101.15 |
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 2011 | Hash Mismatch |
File Traits
- dll
- 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: | 790 |
|---|---|
| Potentially Malicious Blocks: | 6 |
| Whitelisted Blocks: | 784 |
| 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.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 |
Show More
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| Process Manipulation Evasion |
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| Process Shell Execute |
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| Anti Debug |
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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\SysWOW64\rundll32.exe C:\WINDOWS\system32\rundll32.exe c:\users\user\downloads\6db3344864e00e7cbd27fa212a89b7db0e23d0f2_0000188480.,LiQMAxHB
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