Trojan.Sirefef.HU
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.
| Threat Level: | 90 % (High) |
| Infected Computers: | 1 |
| First Seen: | May 17, 2013 |
| Last Seen: | October 12, 2026 |
| OS(es) Affected: | Windows |
Trojan.Sirefef.HU is a Trojan with rootkit capabilities that spreads via security exploits and free program installations. Trojan.Sirefef.HU is hard to find and uninstall from the infected computer by many anti-virus applications. Trojan.Sirefef.HU is associated with ransomware and other malware infections such as rogue security tool, that is, Trojan.Sirefef.HU can be used by cybercriminals to deliver these security threats to affected PCs. Trojan.Sirefef.HU leads to failure of numerous system services and overall system crash.
Table of Contents
Analysis Report
General information
| Family Name: | Trojan.Kazy.E |
|---|---|
| Packers: | UPX! |
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
06e144d89418bd3c91c3664eb190756c
SHA1:
9d644aba090f8d82dba021b9b1278a9bdfcc667c
SHA256:
6E082157AB4E3734C7D07C16A8574E4E18FD5D7833A913422BAFB58B94938F7B
File Size:
173.06 KB, 173056 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 security information
- File has been packed
- 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)
- IMAGE_FILE_DLL is not set inside PE header (Executable)
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- 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 |
|---|---|
| Comments | MTB |
| File Description | Month tooth Box |
| File Version | 1.0.0.0 |
| Legal Copyright | ◎Month tooth Box. All rights reserved. |
| Product Name | Box |
| Product Version | 1.0.0.0 |
File Traits
- dll
- packed
- 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: | 1,314 |
|---|---|
| Potentially Malicious Blocks: | 353 |
| Whitelisted Blocks: | 874 |
| Unknown Blocks: | 87 |
Visual Map
? - Unknown Block
x - Potentially Malicious Block
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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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\9d644aba090f8d82dba021b9b1278a9bdfcc667c_0000173056.,LiQMAxHB
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