Troj/Agent-AANA
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: | 23,776 |
| Threat Level: | 80 % (High) |
| Infected Computers: | 6 |
| First Seen: | March 9, 2013 |
| Last Seen: | January 16, 2026 |
| OS(es) Affected: | Windows |
Troj/Agent-AANA is a Trojan that proliferates to targeted PCs via malicious emails supposedly sent by the DCU (Digital Crimes Unit) of Microsoft. The bogus Microsoft DCU email dispersing Troj/Agent-AANA has the subject 'Security' and tells the affected computer user addressed as 'Dear E-mail User' that because of one fresh security flaw that cybercriminals are exploiting for obtaining his/her Internet credentials, Microsoft DCU this year (2013) has made one fresh security utility. All web and Microsoft users need to affirm the details about personal email accounts despite what ISP alternatively host company they're using. The affirmation can be done via downloading an attached file particularly 'Microsoft_STF', found as Troj/Agent-AANA, unzipping it on the victim's desktop and viewing it. The spam Microsoft DCU email announces that this will then list the computer owner in the security databank of Microsoft and asks the recipient to note that in case of non-affirmation of email accounts, cybercriminals may compromise his/her work or private email and, thus, gain access into his/her privileged/classified information.
Table of Contents
File System Details
| # | File Name |
Detections
Detections: The number of confirmed and suspected cases of a particular threat detected on
infected computers as reported by SpyHunter.
|
|---|---|---|
| 1. | Microsoft_STF_install.zip |
System Messages
The following system messages may be associated with Troj/Agent-AANA:
Dear Email User, |
Analysis Report
General information
| Family Name: | Trojan.Zegost.N |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
8df56fffef38b4560429a2b727203852
SHA1:
bcadc7becedcd69f99d2554e99ba5ff781757d01
SHA256:
30DC1858EC4FD715C70DDF37DB7A76BC40EB8D8F790BC5D1AE6BC7B88C4B254E
File Size:
671.74 KB, 671744 bytes
|
Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have debug information
- File doesn't have security information
- 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)
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- IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)
File Traits
- dll
- 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 |
|---|---|
| Potentially Malicious Blocks: | 10 |
| Whitelisted Blocks: | 10 |
| Unknown Blocks: | 2 |
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.FS
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 More
|
| Process Manipulation Evasion |
|
| Process Shell Execute |
|
| Anti Debug |
|
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\bcadc7becedcd69f99d2554e99ba5ff781757d01_0000671744.,LiQMAxHB
|
