Trojan.Agent.Gen.HEK

Trojan.Agent.Gen.HEK is a generic detection name for a Windows Trojan. Our feed rates it 8 out of 10 for danger. It was first seen on 2026-11-02 and last seen on 2026-11-13, with only 2 detections recorded in that period. Detections like this are often based on behavior and file characteristics rather than one exact known sample, so they can cover several related files.

What the threat does

According to the feed, Trojan.Agent.Gen.HEK installs itself stealthily and then runs silently in the background, performing malicious functions. It may give attackers complete control over an infected system. As is typical for Trojans of this kind, that can include downloading further malware, collecting information and running commands sent by a remote operator. The feed does not list the exact actions of this sample, so these are typical behaviors of the category, not confirmed facts.

The analyzed file presents itself as a game launcher. Its version information names it "Summerblox Game Launcher" (product name "Sb Launcher", version 1.3.8.0, original filename Summerblox.exe). It is signed with a self-signed certificate, which means no trusted certificate authority vouches for the publisher. Trojans commonly pose as legitimate software, and a self-signed signature gives no assurance of safety.

Other technical details from the feed:

• It is a 32-bit native Windows GUI executable, not a .NET application and not packed.
• It has high entropy.
• It uses the Windows Internet functions InternetOpen and InternetOpenUrl, so it can connect to web addresses.
• It modified a file named 1.3.8.exe in a "summerblox" folder inside the user's local application data.
• Of 277 analyzed blocks, 72 were flagged as potentially malicious and 205 were whitelisted.

How it usually gets onto computers

The feed says this Trojan typically spreads in these ways:

• Exploiting system vulnerabilities and security flaws.
• Software downloads from malicious websites.
• Email attachments from untrusted sources, usually .exe, .pif, .avi and even .jpg files.

Given the launcher disguise in this sample, a fake or modified game download is a plausible route. The feed does not confirm this, so treat it as a typical scenario.

Risks for the user

• Remote attackers may take full control of the computer.
• Personal data and account credentials may be exposed, as is typical for Trojans.
• Additional malware may be installed without your knowledge.
• The infected system may become unstable or be used for further attacks.

Signs of infection

Because the Trojan runs silently, there may be no obvious symptoms. Possible warning signs include:

• A game launcher you do not remember installing, especially one run from a user application data folder.
• Unexpected network activity from an unfamiliar program.
• Slower performance or unexplained crashes.
• New programs, settings changes or login alerts you did not cause.
• Your security software reporting a detection named Trojan.Agent.Gen.HEK.

How to stay protected

• Download games and launchers only from the official source of the developer or a trusted store.
• Do not open attachments from unknown senders, particularly .exe or .pif files, or media files that behave oddly.
• Keep Windows and all installed software updated to close the vulnerabilities Trojans exploit.
• Be cautious with software signed by an unknown or self-signed publisher.
• Keep a reputable, up-to-date anti-malware tool running and perform regular full scans.
• Use a standard user account for daily tasks and keep backups of important files offline.

If you suspect infection, disconnect the computer from the internet, run a full scan with an up-to-date anti-malware tool and remove what it finds. Afterward, change your important passwords from a clean device.

Analysis Report

General information

Family Name:	Trojan.Agent.Gen.HEK
Signature status:	Self Signed

Known Samples

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Known Samples

This section lists other file samples believed to be associated with this family.

MD5: c6842a4e6fa277a89a04dbf43558012d SHA1: 75e171b5c6c3636fa26aeabe6ff284bebabbada5 SHA256: E4F36632BA93C5E885481DBBB33590C7BBD710212AF2FA917316625F1E4F5A8D File Size: 896.81 KB, 896808 bytes

Windows Portable Executable Attributes

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Windows Portable Executable Attributes

This section lists file attributes found within family samples. These attributes are extracted from the files’ Windows PE (Portable Executable) specification and various system flags. Portable Executable Attributes give malware researchers insight into a file’s functionality, executable details, platform and runtime environment.

• File doesn't have "Rich" header
• File doesn't have 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)

File Icons

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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

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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	Summerblox Community
File Description	Summerblox Game Launcher
File Version	1.3.8.0
Internal Name	SummerbloxLauncher
Legal Copyright	Copyright (C) 2026 Summerblox
Original Filename	Summerblox.exe
Product Name	Sb Launcher
Product Version	1.3.8.0

Digital Signatures

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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
SummerbloxDevelopment	SummerbloxDevelopment	Self Signed

File Traits

• HighEntropy
• x86

Block Information

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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:	277
Potentially Malicious Blocks:	72
Whitelisted Blocks:	205
Unknown Blocks:	0

Visual Map

0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

Similar Families

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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.

• Trojan.Agent.Gen.HAT
• Trojan.Agent.Gen.HEK
• Trojan.Agent.Gen.HLY
• Trojan.Agent.Gen.HNJ

Files Modified

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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\summerblox\1.3.8.exe	Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete,LEFT 262144

Registry Modifications

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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	�n �8��" a jg�8 �� �v�Z ��T��������% ��Bx#�� $kF &� (�(X�(� )�`*J*9 *�" -!R1`1�1HO1��5,]=�@V�A��D� G�IH[uH�pI��K��N$ N�U_* _�zb"hc�we�vg�Xh�rj�bk`k�ql(�lR p* q�Xr�B tǤ	RegNtPreCreateKey
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75	�n �8��" a jg�8 �� �v�Z ��T��������% ��Bx#�� $kF %� &� (�(X�(� )�`*J*9 *�" -!R1`1�1HO1��5,]=�@V�A��D� G�IH[uH�pI��K��N$ N�U_* _�za$ b"hc�we�vg�Xh�rj�bk`k�ql(�lR p* q�X	RegNtPreCreateKey
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75	�n �8��" a jg�8 �� �v�Z ��T��������% ��Bx#�� $kF %� &� (�(X�(� )�`*J*9 *�" ,=�-!R1`1�1HO1��5,]=�@V�A��D� G�IH[uH�pI��K��N$ N�U_* _�za$ b"hc�we�vg�Xh�rj�bk`k�ql(�lR p*	RegNtPreCreateKey

Windows API Usage

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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
Network Wininet	InternetOpen InternetOpenUrl