Trojan.Downloader.UA
Table of Contents
Analysis Report
General information
| Family Name: | Trojan.Downloader.UA |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
3a58698389e097d8f3ed81bb0c9d5d23
SHA1:
ecc71da76d10a4cf8607de9174bf772aa6fc175b
SHA256:
A644523904E9C55443B146A46613CD94AAD80C3041BE3EE76AE60FA4EE279FCB
File Size:
330.24 KB, 330240 bytes
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MD5:
7a13cf1c92bbfe6dbe386f5aacdffb98
SHA1:
a451819416de63fa7b1f8e12e1d881a9819b6d96
SHA256:
C05132C12A44A3D49ADC0FEFB21D1B02BF7E62636CA864065E23F8FD74C2EE60
File Size:
330.24 KB, 330240 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 security 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
- IMAGE_FILE_DLL is not set inside PE header (Executable)
- IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)
File Traits
- No Version Info
- 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: | 1,051 |
|---|---|
| Potentially Malicious Blocks: | 15 |
| Whitelisted Blocks: | 1,036 |
| Unknown Blocks: | 0 |
Visual Map
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0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block
? - 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.THB
- Downloader.UA
- PSW.Agent.PF
- Trojan.Agent.Gen.ABC
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\dav rpc service | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| \device\namedpipe\pshost.134073044888090294.4840.defaultappdomain.powershell | Generic Read,Write Data,Write Attributes,Write extended,Append data,LEFT 524288 |
| \device\namedpipe\pshost.134133937432152010.6360.defaultappdomain.powershell | Generic Read,Write Data,Write Attributes,Write extended,Append data,LEFT 524288 |
| \device\namedpipe\wkssvc | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\__psscriptpolicytest_0vbsuwip.cko.ps1 | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\__psscriptpolicytest_2cwxu54c.hax.psm1 | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\__psscriptpolicytest_ilgauyix.40y.ps1 | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\__psscriptpolicytest_ivwhh1l1.sus.psm1 | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\yizhsyfgl.txt | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\ysrpiyfigl.txt | Generic Write,Read Attributes |
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 |
|---|---|---|
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::proxybypass | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::intranetname | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::uncasintranet | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::autodetect | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::proxybypass | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::intranetname | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::uncasintranet | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::autodetect | RegNtPreCreateKey | |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe | ꯇ嘶効ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | 烙嘻効ǜ | RegNtPreCreateKey |
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| HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc3475 | RegNtPreCreateKey | |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe | 쪩ﲒ訚ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | 떀ﲞ訚ǜ | RegNtPreCreateKey |
| HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc3475 | RegNtPreCreateKey | |
| HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75 | RegNtPreCreateKey | |
| HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75 | 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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17 additional items are not displayed above. |
| Process Shell Execute |
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| Anti Debug |
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| User Data Access |
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| Encryption Used |
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| Other Suspicious |
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| Process Manipulation Evasion |
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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.
open cmd.exe /C powershell.exe -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath "C:\Users""
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C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe powershell.exe -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath "C:\Users""
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C:\Windows\System32\cmd.exe "C:\Windows\System32\cmd.exe" /C powershell.exe -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath "C:\Users""
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