Trojan.Agent.LOFG
Trojan.Agent.LOFG is a detection name used to identify a Trojan horse program, a type of malicious software that disguises itself as something legitimate or harmless in order to infiltrate a computer system. Because detections in the "Agent" family are often generic classifications, Trojan.Agent.LOFG may represent a program that shares behavioral or code similarities with other known Trojans rather than a single, uniquely defined threat. As with most Trojans, its primary goal is to gain unauthorized access to a system and carry out harmful actions without the user's knowledge or consent.
Table of Contents
What Trojan.Agent.LOFG Does
Like other threats in this category, Trojan.Agent.LOFG typically operates quietly in the background once it has been installed on a device. Trojans in this family are generally capable of performing a range of malicious activities, which can include downloading and installing additional malware, modifying system settings, collecting information from the infected device, and allowing remote attackers to control certain functions of the computer. It is typical for this type of threat to attempt to maintain persistence on the system, meaning it may try to ensure it continues running even after a restart, making it harder for users to remove it through simple means.
How It Usually Gets Onto Computers
Trojans such as this one commonly spread through deceptive methods rather than exploiting security flaws alone. Typical infection vectors include malicious email attachments, fake software updates, bundled downloads from untrustworthy websites, cracked or pirated software, and links shared through phishing messages or compromised advertisements. Because Trojans rely on tricking users into executing them, they are often disguised with names or icons that make them appear to be legitimate files, documents, or applications.
Risks for the User
An infection involving a Trojan like this one can expose users to several risks. These may include theft of personal or financial information, unauthorized remote access to the device, degraded system performance, and the installation of additional unwanted or malicious programs. Since Trojans are often used as a gateway for further attacks, a system compromised by Trojan.Agent.LOFG could become more vulnerable to other forms of malware, including ransomware or spyware, depending on what additional payloads the threat is designed to deliver.
Signs of Infection
Because Trojans are designed to operate covertly, there may be few obvious symptoms. However, users should watch for warning signs typical of this category of malware, such as unexplained slowdowns in system performance, unusual network activity, unfamiliar programs or processes running in the background, changes to browser or system settings that were not made by the user, and increased pop-ups or redirects while browsing. Security software flagging a file as Trojan.Agent.LOFG is often the clearest indication that such a threat is present.
How to Stay Protected
To reduce the risk of infection, users should avoid downloading software from unofficial or untrustworthy sources, be cautious with email attachments and links from unknown senders, and keep their operating system and installed applications up to date. Running regular system scans with reputable security software, enabling firewall protection, and practicing safe browsing habits are also effective ways to lower the chances of encountering Trojans like this one. If a Trojan infection is suspected, it is important to take prompt action to remove the threat and review the system for any additional changes or compromises it may have caused.
Analysis Report
General information
| Family Name: | Trojan.Agent.LOFG |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
8a96b62a98c1d60eaaad112aeabc173f
SHA1:
c73d59062da08fc8585ae82f4f360a72f931f25c
SHA256:
A4C0A535E1488DD61E184CCA1DE7F02595BE6C29B35F62FF5DC7E4A8CA3938E0
File Size:
6.63 MB, 6626816 bytes
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Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have exports table
- File doesn't have resources
- File doesn't have security information
- File has TLS information
- File is 64-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 Traits
- CryptUnprotectData
- fptable
- 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: | 15,701 |
|---|---|
| Potentially Malicious Blocks: | 228 |
| Whitelisted Blocks: | 15,473 |
| 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.- Agent.LOFG
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 | Generic Write,Read Attributes |
| c:\users\user\appdata\local\bridge\.supervisor.heartbeat.json.new-bdf-cdvv | Generic Write,Read Attributes |
| c:\users\user\appdata\local\bridge\.supervisor.heartbeat.json.new-xim1sr42 | Generic Write,Read Attributes |
| c:\users\user\appdata\local\bridge\agent.db | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\bridge\agent.db-journal | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\bridge\agent.db-shm | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\bridge\agent.db-wal | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\bridge\legacy-migration-v1.complete | Generic Write,Read Attributes |
| c:\users\user\appdata\local\bridge\logs\bridge-agent.log | Read Attributes,Synchronize,Read Control,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\bridge\supervisor.heartbeat.json | Synchronize,Write Data |
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| c:\users\user\appdata\local\programs\bridge\bridgeagent.exe | Synchronize,Write Data |
| c:\users\user\appdata\local\programs\bridge\bridgeagent.new.exe | Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete,LEFT 262144 |
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\conhost.exe | ꆡ設佌ǝ | RegNtPreCreateKey |
| HKCU\software\microsoft\windows\currentversion\run::bridgeagent | "C:\Users\Snetxjdb\AppData\Local\Programs\Bridge\BridgeAgent.exe" --supervisor | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | 挮詰佌ǝ | RegNtPreCreateKey |
| HKCU\software\microsoft\windows\currentversion\run::bridgeagent | "C:\Users\Snetxjdb\AppData\Local\Programs\Bridge\BridgeAgent.exe" --supervisor | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | 猺諁佌ǝ | RegNtPreCreateKey |
| HKCU\software\microsoft\windows\currentversion\run::bridgeagent | "C:\Users\Snetxjdb\AppData\Local\Programs\Bridge\BridgeAgent.exe" --supervisor | 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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| Process Manipulation Evasion |
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| Process Shell Execute |
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| Anti Debug |
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| User Data Access |
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| Process Terminate |
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| Cert Store Read |
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| Network Winsock2 |
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| Network Winsock |
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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\reg.exe "reg.exe" ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v BridgeAgent /t REG_SZ /d "\"C:\Users\Snetxjdb\AppData\Local\Programs\Bridge\BridgeAgent.exe\" --supervisor" /f
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C:\Users\Snetxjdb\AppData\Local\Programs\Bridge\BridgeAgent.exe "C:\Users\Snetxjdb\AppData\Local\Programs\Bridge\BridgeAgent.exe" --supervisor
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C:\WINDOWS\system32\reg.exe "reg.exe" ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v BridgeAgent /t REG_SZ /d "\"C:\Users\Snetxjdb\AppData\Local\Programs\Bridge\BridgeAgent.exe\" --supervisor" /f
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C:\Users\Snetxjdb\AppData\Local\Programs\Bridge\BridgeAgent.exe "C:\Users\Snetxjdb\AppData\Local\Programs\Bridge\BridgeAgent.exe" --runtime --supervisor-pid 9752
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C:\Users\Snetxjdb\AppData\Local\Programs\Bridge\BridgeAgent.exe "C:\Users\Snetxjdb\AppData\Local\Programs\Bridge\BridgeAgent.exe" --supervisor --adopt-runtime 4324
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C:\WINDOWS\system32\reg.exe "reg.exe" ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v BridgeAgent /t REG_SZ /d "\"C:\Users\Snetxjdb\AppData\Local\Programs\Bridge\BridgeAgent.exe\" --supervisor" /f
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