Trojan.Grandoreiro.A
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: | 14,080 |
| Threat Level: | 80 % (High) |
| Infected Computers: | 2,713 |
| First Seen: | December 14, 2012 |
| Last Seen: | July 15, 2026 |
| OS(es) Affected: | Windows |
The detection of Trojan.Grandoreiro.A on your system indicates a potential security threat that requires immediate attention. This type of malware is designed to compromise the security and integrity of your computer, and it's essential to understand its nature and take appropriate steps to remove it.
Table of Contents
What Is Trojan.Grandoreiro.A?
Trojan.Grandoreiro.A is a type of Trojan horse malware, which is a broad category of malicious software that disguises itself as legitimate or harmless. The name "Trojan" refers to the malware's ability to infiltrate a system by masquerading as something else, much like the legendary Trojan Horse of ancient Greece. Trojan horses can be used to deliver a wide range of malicious payloads, including viruses, spyware, adware, and ransomware.
How Trojan.Grandoreiro.A Operates
Once installed on a system, Trojan.Grandoreiro.A can operate in various ways, depending on its intended purpose. It may attempt to connect to a command and control server to receive instructions from its creators, or it may begin to scan the system for sensitive information such as login credentials, credit card numbers, or other personal data. In some cases, the malware may also attempt to download and install additional malicious software or create backdoors for future access.
Trojan horses like Trojan.Grandoreiro.A often rely on social engineering tactics to trick users into installing them. This can include phishing emails, infected software downloads, or exploited vulnerabilities in operating systems or applications. The malware may also use rootkit techniques to hide its presence from the system and security software.
Symptoms of Infection
The symptoms of a Trojan.Grandoreiro.A infection can vary, but common signs include unusual system behavior, such as slow performance, frequent crashes, or unexplained changes to system settings. You may also notice unfamiliar programs or icons on your desktop, or receive unexpected pop-ups or alerts. In some cases, the malware may attempt to disable security software or prevent you from accessing certain websites or system features.
- Unexplained changes to system settings or configuration
- Slow system performance or frequent crashes
- Unfamiliar programs or icons on the desktop
- Unexpected pop-ups or alerts
- Disabled security software or restricted access to system features
How to Remove Trojan.Grandoreiro.A
- Boot your system in Safe Mode with Networking to prevent the malware from loading and to allow for easier removal.
- Use a reputable anti-malware tool, such as SpyHunter, to perform a full scan of your system and detect any malicious files or programs.
- Uninstall any suspicious programs or applications that may be related to the malware.
- 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 perform another full scan with your anti-malware tool to ensure that all remnants of the malware have been removed.
Conclusion
Removing Trojan.Grandoreiro.A from your system requires careful attention to detail and a thorough understanding of the malware's behavior. By following the steps outlined above and using reputable security software, you can help to protect your system and prevent future infections. It's essential to remain vigilant and take proactive steps to secure your system, including keeping your operating system and software up to date, using strong passwords, and avoiding suspicious downloads or links.
Analysis Report
General information
| Family Name: | Trojan.Grandoreiro.A |
|---|---|
| Packers: | UPX |
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
4dcf2a2e7f579cb4c092b87e934c055b
SHA1:
ff06a25d0fa85cbf59ce1bac5c07771fd559e460
SHA256:
C10CBFA954B6611062DD209A6E4E546D87033342C19E5B75BCA37F922B64C367
File Size:
685.57 KB, 685568 bytes
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MD5:
1eba435e4cda0fc3a1031366b33458f4
SHA1:
c6f0473bdf73469c20327d873a7beb64e16c6d1e
SHA256:
35BE6790E16F1B532E4E3EC8CE172224CB4D458FE96370F64F9E35554C43C088
File Size:
7.86 MB, 7860224 bytes
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MD5:
749f03687331c471d832625f32405c45
SHA1:
59139da34222d54a510367e1ad53471ae9c0afcb
SHA256:
9FABF744ABD39EC4369DFB3D5EF9E0AEB5482D942084A5219259F1AA4A45E1AB
File Size:
4.35 MB, 4345344 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 relocations information
- File doesn't have security information
- File has been packed
- File has TLS information
- File is 32-bit executable
- File is either console or GUI application
- File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
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- 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)
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 |
|
| File Description |
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| File Version |
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| Internal Name |
|
| Legal Copyright | AndreSoft |
| Original Filename | joga_loterias_profissional.exe |
| Product Name | Joga Loterias Profissional |
| Product Version |
|
File Traits
- 2+ executable sections
- HighEntropy
- imgui
- No Version Info
- ntdll
- packed
- PECompact v2.20
- WriteProcessMemory
- 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: | 13,153 |
|---|---|
| Potentially Malicious Blocks: | 1,119 |
| Whitelisted Blocks: | 11,955 |
| Unknown Blocks: | 79 |
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 |
|---|---|
| \device\namedpipe\srvsvc | 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 |
|---|---|---|
| HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75 | �k � 8�� �� �6 �v �Z xy �� �� T���� ���� �5����Bx �� �� !wz #�#��$kF%:� &� &�-(�(X�)E*J*9*�"+�[/9� /��0P%1`1�1HO 1�D5�09ߔ<.:>3� @V� B�� F?G�IH[uH�pH�� I��J�� N$N� R20U_*V � | 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 |
|---|---|
| User Data Access |
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| Anti Debug |
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| Network Winsock2 |
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| Other Suspicious |
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