Trojan.Rugmi.FF
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: | 8 |
| Threat Level: | 80 % (High) |
| Infected Computers: | 16,671 |
| First Seen: | August 13, 2025 |
| Last Seen: | October 23, 2026 |
| OS(es) Affected: | Windows |
Trojan.Rugmi.FF is a dangerous Windows-based Trojan designed to quietly infiltrate computers, operate without detection, and open the door for further malicious activity. With a danger level rated 8 out of 10, Rugmi.FF poses a serious risk to both personal and business systems, functioning primarily as a loader or downloader that paves the way for additional malware to be installed on an infected device.
Table of Contents
What Trojan.Rugmi.FF Does
Once active on a system, Rugmi.FF runs silently in the background, attempting to avoid detection by security tools and the user alike. It is capable of performing a range of harmful functions, including deleting files, installing additional malicious payloads, and potentially giving remote attackers a high degree of control over the infected machine. Interestingly, this threat has been observed disguising itself using file information associated with legitimate Python software components, likely in an attempt to appear trustworthy and evade suspicion from both users and basic security scans. Despite this disguise, the file's actual digital signature does not match what it claims to be, a strong indicator of tampering.
Behind the scenes, Rugmi.FF leverages low-level Windows system functions to manipulate memory, execute processes, and interact with the operating system in ways that are not typical for legitimate software. It has also been seen launching system utilities, such as rundll32.exe, in unusual and automated ways to execute its malicious code while blending in with normal system operations.
How It Usually Spreads
Like many Trojans in this category, Rugmi.FF typically gains access to computers through deceptive or exploitative methods. It is commonly distributed via malicious or compromised websites offering software downloads, or through email attachments sent from untrusted or spoofed sources. These attachments may be disguised with misleading file extensions such as .exe, .pif, .avi, or even .jpg files to trick users into opening them. In some cases, this Trojan may also exploit unpatched system vulnerabilities to install itself without any direct action from the user.
Risks for Users
The presence of Rugmi.FF on a system can lead to serious consequences. Because it may allow attackers to gain significant control over the infected device, users risk having personal data stolen, additional malware silently installed, and important files deleted or altered without their knowledge. Given its stealthy nature, victims often remain unaware of the infection until damage has already occurred, such as financial loss, identity theft, or further compromise of the system through secondary malware infections.
Signs of Infection
Because Rugmi.FF is built to operate covertly, visible symptoms may be minimal or easily overlooked. However, users should watch for unusual system slowdowns, unexpected background processes, unfamiliar files appearing in system folders, or unexplained changes to system settings. Suspicious use of built-in Windows tools, like rundll32.exe, running at odd times or with unusual parameters, can also indicate the presence of this type of threat.
How to Stay Protected
To reduce the risk of infection, users should avoid downloading software from unofficial or unverified websites and refrain from opening email attachments from unknown or suspicious senders. Keeping the Windows operating system and all installed software fully updated helps close security gaps that threats like Rugmi.FF often exploit. Running reputable, up-to-date security software and performing regular system scans can help detect and remove threats before they cause significant harm. Practicing caution online and maintaining regular backups of important files further strengthens protection against this type of Trojan.
Analysis Report
General information
| Family Name: | Trojan.Rugmi.FF |
|---|---|
| Signature status: | Hash Mismatch |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
cbe8e89ac374da5f51a6eb2239315f1e
SHA1:
63e91ee13f25a43410e54f4601cd30200e5842b8
SHA256:
F4DA0C4CB82D0042F8C327D41ABF8DFCC5A2AC60589E40933E35059871BDF44A
File Size:
3.30 MB, 3297944 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 | Python Software Foundation |
| File Description | Python Core |
| File Version | 3.6.3 |
| Internal Name | Python DLL |
| Legal Copyright | Copyright © 2001-2016 Python Software Foundation. Copyright © 2000 BeOpen.com. Copyright © 1995-2001 CNRI. Copyright © 1991-1995 SMC. |
| Original Filename | python36.dll |
| Product Name | Python |
| Product Version | 3.6.3 |
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 |
|---|---|---|
| Python Software Foundation | StartCom Class 3 Object CA | Hash Mismatch |
File Traits
- dll
- HighEntropy
- 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: | 8,698 |
|---|---|
| Potentially Malicious Blocks: | 6 |
| Whitelisted Blocks: | 8,689 |
| Unknown Blocks: | 3 |
Visual Map
... Data truncated? - 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.- Rugmi.FC
- Rugmi.FF
- Rugmi.OO
- Trojan.Downloader.Gen.AVR
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\microsoft\windows\usrclass.dat{dba6b5ef-640a-11ed-9bcb-f677369d361c}.txr.1.regtrans-ms | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\microsoft\windows\usrclass.dat{dba6b5ef-640a-11ed-9bcb-f677369d361c}.txr.2.regtrans-ms | Generic Read,Write Data,Write Attributes,Write extended,Append data |
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 17 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\63e91ee13f25a43410e54f4601cd30200e5842b8_0003297944.,LiQMAxHB
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