PUP.YAC (Yet Another Cleaner)
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: | 1,852 |
| Threat Level: | 10 % (Normal) |
| Infected Computers: | 223,555 |
| First Seen: | December 27, 2013 |
| Last Seen: | February 4, 2026 |
| OS(es) Affected: | Windows |
Table of Contents
File System Details
PUP.YAC (Yet Another Cleaner) may create the following file(s):
| # | File Name | MD5 |
Detections
Detections: The number of confirmed and suspected cases of a particular threat detected on
infected computers as reported by SpyHunter.
|
|---|---|---|---|
| 1. | aerdl.dll | 0750556e1471fc9d823c30bc99b77a38 | 3,098 |
| 2. | aedroid.dll | b2987d8a627afce56302498d912161f7 | 1,471 |
| 3. | aeheur.dll | edf1ff20c2277e9af3778757c987d14c | 1,163 |
| 4. | aescript.dll | 9a639617aeeb415832e659714053fcab | 1,085 |
| 5. | aeoffice.dll | 223b886130b8e2e03a3702dc92efe5a4 | 1,069 |
| 6. | aeexp.dll | 16652e6d9b7d961e9f1ca93c94fcecb0 | 898 |
| 7. | aemobile.dll | f3b78103c2bbceaeb933727049bcc5d4 | 839 |
| 8. | bas.dat | 46721a65cc7400788bf58072f5ff70a6 | 823 |
| 9. | adb.dat | d08eb2854b761c9ec1e36d590790f776 | 769 |
| 10. | rms.dat | 649172d71d4aca8496fba5e53fe940bc | 762 |
| 11. | index.dat | a4c186fe42f4e798b3e2741822091b33 | 739 |
| 12. | mic.dat | bf771c93b7f109934054742a262573e5 | 664 |
| 13. | nlu.dat | b6b096e15554281027b0ffe59e94a0b9 | 664 |
| 14. | bs.dat | 649a07a151c973d009eb055ed02af399 | 607 |
| 15. | stu.dat | 3c13507f1e9bf138714daa4e04d98cfd | 591 |
| 16. | uis.dat | 0744e7ed95e05352e420f290614ddf3d | 590 |
| 17. | aescn.dll | 7a09731d5c7c6c6c97cb01ced6544e2b | 529 |
| 18. | bwd.dat | 21c4dd4e2c6f525aff8cb2f14deed567 | 223 |
| 19. | A0585417.dll | 4641639cbf2195019f386db9b9ba203e | 56 |
| 20. | A0330162.dll | 109b39ad96c36a7d456f3584ac738b0e | 53 |
| 21. | A0330159.dll | f657b8fbd27fb83cd3e594e5ec84d012 | 52 |
| 22. | aegen.dll | 266b1c726a11c338b3d30e5759ad9cb5 | 46 |
| 23. | A0023360.dll | d8e6dff3afe4138bd9b040af30f85918 | 26 |
| 24. | A0326620.dll | a602d49140782f96cf8acfb8b9be3bfa | 14 |
| 25. | A0326627.dll | 8e45efe2779df04f0809ad93633e4fd6 | 14 |
| 26. | iSafeNetFilter.sys | 702d15a8ba2cc13b31865ce1ea11baf7 | 7 |
| 27. | iSafeKrnlBoot.sys | 67808f55a8590f2843aa9b9935089d29 | 5 |
| 28. | eas.dat | 7c0ce536cb12533f3d54cd23f56c1dad | 3 |
| 29. | yac_setup.exe | 1a126b528993fd081e9a1cda4ca2a96a | 1 |
| 30. | aevdf.dat | 3b8ce109a27ee673b8e265bcfdab5cf2 | 0 |
Registry Details
PUP.YAC (Yet Another Cleaner) may create the following registry entry or registry entries:
CLSID
{0EB9B9FE-3CEF-43E1-882A-853FC80021CE}
{5411D116-5A37-47D4-B154-5F7FCD9062F0}
File name without path
YAC.lnk
Regexp file mask
%AppData%\Microsoft\Internet Explorer\Quick Launch\User Pinned\StartMenu\Depth clean up junk files.lnk
%WINDIR%\System32\drivers\iSafeKrnlBoot.sys
%WINDIR%\System32\drivers\iSafeNetFilter.sys
%WinDir%\System32\log\iSafeKrnlCall.log
*\shellex\ContextMenuHandlers\iSafeRKScan
CLSID\{645FF040-5081-101B-9F08-00AA002F954E}\shell\iSafeRKScan
CLSID\{645FF040-5081-101B-9F08-00AA002F954E}\shellex\ContextMenuHandlers\iSafeRKScan
Directory\shellex\ContextMenuHandlers\iSafeRKScan
Folder\ShellEx\ContextMenuHandlers\iSafeRKScan
lnkfile\shellex\ContextMenuHandlers\iSafeRKScan
SOFTWARE\Classes\*\shellex\ContextMenuHandlers\iSafeRKScan
SOFTWARE\Classes\CLSID\{645FF040-5081-101B-9F08-00AA002F954E}\shell\iSafeRKScan
SOFTWARE\Classes\CLSID\{645FF040-5081-101B-9F08-00AA002F954E}\shellex\ContextMenuHandlers\iSafeRKScan
SOFTWARE\Classes\Directory\shellex\ContextMenuHandlers\iSafeRKScan
SOFTWARE\Classes\Folder\ShellEx\ContextMenuHandlers\iSafeRKScan
SOFTWARE\Classes\lnkfile\shellex\ContextMenuHandlers\iSafeRKScan
SOFTWARE\Elex-tech
SOFTWARE\iSafe
SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved\{0EB9B9FE-3CEF-43E1-882A-853FC80021CE}
SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved\{5411D116-5A37-47D4-B154-5F7FCD9062F0}
SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\iSafe
SOFTWARE\Wow6432Node\Elex-tech
SOFTWARE\Wow6432Node\iSafe
SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\iSafe
SYSTEM\ControlSet001\Control\iSafeKrnlBoot
SYSTEM\ControlSet001\Enum\Root\LEGACY_ISAFEKRNL
SYSTEM\ControlSet001\Enum\Root\LEGACY_ISAFEKRNLKIT
SYSTEM\ControlSet001\Enum\Root\LEGACY_ISAFEKRNLR3
SYSTEM\ControlSet001\Enum\Root\LEGACY_ISAFENETFILTER
SYSTEM\ControlSet001\services\iSafeKrnl
SYSTEM\ControlSet001\services\iSafeKrnlBoot
SYSTEM\ControlSet001\services\iSafeKrnlKit
SYSTEM\ControlSet001\services\iSafeKrnlR3
SYSTEM\ControlSet001\services\iSafeNetFilter
SYSTEM\ControlSet001\services\iSafeService
SYSTEM\ControlSet002\Control\iSafeKrnlBoot
SYSTEM\ControlSet002\Enum\Root\LEGACY_ISAFEKRNL
SYSTEM\ControlSet002\Enum\Root\LEGACY_ISAFEKRNLKIT
SYSTEM\ControlSet002\Enum\Root\LEGACY_ISAFEKRNLR3
SYSTEM\ControlSet002\Enum\Root\LEGACY_ISAFENETFILTER
SYSTEM\ControlSet002\services\iSafeKrnl
SYSTEM\ControlSet002\services\iSafeKrnlBoot
SYSTEM\ControlSet002\services\iSafeKrnlKit
SYSTEM\ControlSet002\services\iSafeKrnlR3
SYSTEM\ControlSet002\services\iSafeNetFilter
SYSTEM\ControlSet002\services\iSafeService
SYSTEM\CurrentControlSet\Control\iSafeKrnlBoot
SYSTEM\CurrentControlSet\Enum\Root\LEGACY_ISAFEKRNL
SYSTEM\CurrentControlSet\Enum\Root\LEGACY_ISAFEKRNLKIT
SYSTEM\CurrentControlSet\Enum\Root\LEGACY_ISAFEKRNLR3
SYSTEM\CurrentControlSet\Enum\Root\LEGACY_ISAFENETFILTER
SYSTEM\CurrentControlSet\services\iSafeKrnl
SYSTEM\CurrentControlSet\services\iSafeKrnlBoot
SYSTEM\CurrentControlSet\services\iSafeKrnlKit
SYSTEM\CurrentControlSet\services\iSafeKrnlR3
SYSTEM\CurrentControlSet\services\iSafeNetFilter
SYSTEM\CurrentControlSet\services\iSafeService
Directories
PUP.YAC (Yet Another Cleaner) may create the following directory or directories:
| %ALLUSERSPROFILE%\Microsoft\Windows\Start Menu\Programs\YAC |
| %APPDATA%\Elex-tech |
| %AppData%\eCyber |
| %AppData%\iSafe |
| %PROGRAMFILES%\Elex-tech |
| %PROGRAMFILES%\iSafe |
| %PROGRAMFILES(x86)%\Elex-tech |
| %PROGRAMFILES(x86)%\iSafe |
| %TEMP%\iSafeRightKeyScan |
Analysis Report
General information
| Family Name: | PUP.YAC (Yet Another Cleaner) |
|---|---|
| Signature status: | Self Signed |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
d7c3ba6b7f1f34fd41fa1a6d50d3a996
SHA1:
6592ca274374ffaa9ff7eeb9f837ef44f3e5f14c
SHA256:
49FA607289E3AD1E1289E11381A9F94ECAB899CF2C0815E11B034AB3DC5813D8
File Size:
2.00 MB, 1999600 bytes
|
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 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)
Show More
- 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 | Elex do Brasil Participações Ltda |
| File Description | standard installer |
| File Version | 1.0.107.22342 |
| Legal Copyright | Copyright 2011-2014 Elex do Brasil Participações Ltda. All rights reserved. |
| Product Name | yacdl |
| Product Version | 1.0.107.22342 |
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 |
|---|---|---|
| Elex do Brasil Participações Ltda | VeriSign Class 3 Code Signing 2010 CA | Self Signed |
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\harddisk0\dr0 | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\nsndc0b.tmp | Synchronize,Write Attributes |
| c:\users\user\appdata\local\temp\nsndc0b.tmp\insertdlg.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsndc0b.tmp\insertdlg.dll | Synchronize,Write Attributes |
| c:\users\user\appdata\local\temp\nsndc0b.tmp\system.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsndc0b.tmp\system.dll | Synchronize,Write Attributes |
| c:\users\user\appdata\local\temp\~dc4b | Synchronize,Write Attributes |
| c:\users\user\appdata\local\temp\~dc4b\isafedownloader.exe | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\~dc4b\isafedownloader.exe | Synchronize,Write Attributes |
| c:\users\user\appdata\local\temp\~dc4b\nsis_setup | Generic Write,Read Attributes |
Show More
| c:\users\user\appdata\local\temp\~dc4b\nsis_setup | Synchronize,Write Attributes |
| c:\users\user\appdata\local\temp\~dc4b\nsis_setup_deleted_ | Synchronize,Write Attributes |
| c:\users\user\appdata\roaming\ecyber\log\isafedownloader.log | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\roaming\ecyber\log\isafedownloader.log | Synchronize,Write 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 |
|---|---|---|
| HKLM\system\controlset001\control\session manager::pendingfilerenameoperations | \??\C:\Users\Tnztmopa\AppData\Local\Temp\nsnDC0B.tmp\insertdlg.dll | RegNtPreCreateKey |
| HKLM\system\controlset001\control\session manager::pendingfilerenameoperations | \??\C:\Users\Tnztmopa\AppData\Local\Temp\nsnDC0B.tmp\insertdlg.dll \??\C:\Users\Tnztmopa\AppData\Local\Temp\nsnDC0B.tmp\ | 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 |
|---|---|
| Process Shell Execute |
|
| Network Winsock2 |
|
| User Data Access |
|
| Anti Debug |
|
| Network Wininet |
|
| Network Winhttp |
|
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:\Users\Tnztmopa\AppData\Local\Temp\~DC4B\iSafeDownloader.exe
|
