Trojan.Filecoder.OA
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: | 5,473 |
| Threat Level: | 80 % (High) |
| Infected Computers: | 2,937 |
| First Seen: | January 16, 2013 |
| Last Seen: | July 20, 2026 |
| OS(es) Affected: | Windows |
The detection of Trojan.Filecoder.OA on your system indicates a potential security threat that requires immediate attention. This report provides an overview of the threat, its operational characteristics, symptoms of infection, and steps to remove it from your system.
Table of Contents
What Is Trojan.Filecoder.OA?
Trojan.Filecoder.OA is a type of malware that has been detected on your system. The name suggests it may be related to Trojan horses, which are malicious programs that disguise themselves as legitimate software. However, without more specific information, it's difficult to determine the exact nature or family of this threat. Malware can come in various forms, including viruses, worms, and Trojans, each with different methods of operation and objectives, such as data theft, ransom demands, or unauthorized access to system resources.
How Trojan.Filecoder.OA Operates
Malware like Trojan.Filecoder.OA typically operates by exploiting vulnerabilities in software or tricking users into installing it. Once installed, it can perform a variety of malicious activities. These can include encrypting files and demanding a ransom, stealing sensitive information like passwords or credit card numbers, or using the infected computer as part of a botnet to carry out further malicious activities. The exact operation of Trojan.Filecoder.OA would depend on its specific design and purpose, which can vary widely among different types of malware.
Symptoms of Infection
Symptoms of a malware infection can vary, but common signs include unusual system behavior, such as slow performance, frequent crashes, or unfamiliar programs appearing on the system. You might also notice that your files are encrypted and inaccessible, or that you're being asked for payment in exchange for a decryption key. Sometimes, malware can operate without noticeable symptoms, making regular system checks and the use of antivirus software crucial for early detection.
How to Remove Trojan.Filecoder.OA
- Boot into Safe Mode with Networking: This will help prevent the malware from loading and make it easier to remove. Safe Mode starts Windows in a basic state, using a limited set of files and drivers, which can help you troubleshoot problems.
- Run a Full Scan with a Reputable Tool: Use a reputable anti-malware tool, such as SpyHunter, to scan your system for malware and follow its instructions for removal. Ensure your antivirus and anti-malware software are up to date, as newer versions will have the latest definitions and techniques for detecting and removing malware.
- Uninstall Suspicious Programs: Check your list of installed programs for anything that looks suspicious or unfamiliar and uninstall it. Be cautious and only remove programs you are sure are malicious, as removing legitimate programs can cause system instability.
- Reset Your Browser: Malware can often modify browser settings or install unwanted extensions. Resetting your browser (e.g., Chrome, Firefox, Edge) to its default settings can help remove these changes. Be aware that this will also remove any customized settings or extensions you have added.
- Reboot and Re-scan: After taking the above steps, reboot your system and run another scan with your anti-malware tool to ensure that the malware has been fully removed. This step is crucial as some malware can reinstall itself if not completely eradicated.
Conclusion
Removing Trojan.Filecoder.OA from your system requires careful and methodical steps to ensure that all components of the malware are eliminated. It's also important to take preventive measures to avoid future infections, such as keeping your operating system and software up to date, being cautious with email attachments and downloads, and regularly scanning your system for malware. By understanding how malware operates and taking proactive steps, you can significantly reduce the risk of infection and protect your personal data and system integrity.
Analysis Report
General information
| Family Name: | Trojan.Filecoder.OA |
|---|---|
| Packers: | ASPack v2.12 |
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
464196708934477fb135f62c88445cbd
SHA1:
2a07f263f3f566d631e3cdcbc50619e642ee7358
SHA256:
92156A0CFE7F00132E6D7BBBA34399C6D6A11BC94D91E7FA9C3E5E94E9C4BAF7
File Size:
4.70 MB, 4699136 bytes
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MD5:
e4d0dc2a7b3603e32b98c2582e11db1e
SHA1:
deb62ef59e772663703695bd0b756ce60779803a
SHA256:
51EEEAA626020424E6E946DE7A3B697BDB5FA5107CAE4B4B914CEE55AD4E5B70
File Size:
3.20 MB, 3201719 bytes
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MD5:
7e195491946cd7dc5b92560e86007ce8
SHA1:
df16056a2ed1764100b3c6c93aca60f620dec21f
SHA256:
9006C05A60C2890A38BB478F6F8BF54D8A47DE92E25B7C1F98D9C4C8BBF9DBD3
File Size:
2.59 MB, 2592768 bytes
|
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MD5:
bcdbe1d34cb2cb638b052159c7842499
SHA1:
f51dce6151f445da998f6994124da7e970b00b54
SHA256:
29FB60E88E2CCA263B0A991AD4A699A67A250F35DF950DB69E601B22A711A5BE
File Size:
5.96 MB, 5963776 bytes
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MD5:
699ad1b4720e0b4325f0e93c115940fd
SHA1:
0a19edead1d856e9f41edcd797502ed59e2a2bed
SHA256:
1E96F3964D13CF5BBBA90DE0A9DDFF1E9F171B55AC7A76E118DF776E5C1162FB
File Size:
6.20 MB, 6196144 bytes
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MD5:
10c2ffae4849268ee3706325f54b52b4
SHA1:
6871460751688a07b7362a6ae037a9edcf976d90
SHA256:
5BC763B7965096B28E43284F83749BEF7DA87919BEEB739266537D8524C2E659
File Size:
207.87 KB, 207872 bytes
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MD5:
5d2e0799c8895123a3f010cbf425588f
SHA1:
999a4fdefe09d161e2ecda7993fc22733f38270b
SHA256:
652168F18C4AC209D2B1FF4BF29F7F6F67CEFBCB2A090BD4C4E3A41154279DD1
File Size:
336.36 KB, 336358 bytes
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MD5:
9f2a39e61360c8cda25f9c294b216bd7
SHA1:
8e70e9f2e3da69642d7c72f2f5de592e1a2c6d64
SHA256:
B816C2636EE8699CA82C1C36FD87E77E2DBDA26737875ADA3CE1EF4A554BB6A6
File Size:
3.09 MB, 3092480 bytes
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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 |
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| bl.01@ya.ru | |
| File Description |
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| File Version |
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| Internal Name | DashDumpEdit |
| Legal Copyright |
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| Original Filename |
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| Product Name |
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| Product Version |
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File Traits
- .adata
- .aspack
- 2+ executable sections
- ASPack v2.12
- HighEntropy
- imgui
- No Version Info
- packed
- 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: | 22,885 |
|---|---|
| Potentially Malicious Blocks: | 81 |
| Whitelisted Blocks: | 21,561 |
| Unknown Blocks: | 1,243 |
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\gmdasllogger | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsbec22.tmp\image.bmp | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsbec22.tmp\iospecial.ini | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\nsbec22.tmp\iospecial.ini | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsbec22.tmp\modern-wizard.bmp | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsbec22.tmp\nsdialogs.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsbec22.tmp\system.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsm2a92.tmp\iospecial.ini | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\nsm2a92.tmp\iospecial.ini | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsm2a92.tmp\modern-header.bmp | Generic Write,Read Attributes |
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| c:\users\user\appdata\local\temp\nsm2a92.tmp\modern-wizard.bmp | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsm2a92.tmp\shortcutpage.ini | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\nsm2a92.tmp\shortcutpage.ini | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsn70d4.tmp\installoptions.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsn70d4.tmp\iospecial.ini | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\nsn70d4.tmp\iospecial.ini | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsn70d4.tmp\modern-header.bmp | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsn70d4.tmp\modern-wizard.bmp | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsqebe2.tmp | Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete |
| c:\users\user\appdata\local\temp\nss7046.tmp | Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete |
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 |
|---|---|
| Anti Debug |
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| User Data Access |
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| Keyboard Access |
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| Other Suspicious |
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| Process Manipulation Evasion |
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