CZH6AFJ71B.EXE – worm Ainslot

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The file CZH6AFJ71B.EXE is a computer worm.
The worm CZH6AFJ71B.EXE is a self-replicating malicious program,
which uses a computer network to send copies of itself to other computers.
You must fix the CZH6AFJ71B.EXE problem as soon as possible!
Delete the file CZH6AFJ71B.EXE from all infected computers in your network.
Set up your network firewall against CZH6AFJ71B.EXE intervention.

Malware Analysis of “CZH6AFJ71B.EXE”
Executed: bs.exe
Removed: CZH6AFJ71B.exe. Full path: C:\Documents and Settings\Administrator\Local Settings\Temp\CZH6AFJ71B.exe

Detected by UnHackMe:

Item Name: WinDef
Author: uzboU
Type: Explorer Run

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Type: ActiveSetup

Item Name: CZH6AFJ71B.exe
Type: Running Processes

Removal Results: Success
Number of reboot: 1

CZH6AFJ71B.EXE is known as:

Backdoor.Win32.Agent, Worm.Win32.Ainslot

CZH6AFJ71B.EXE hash:

  • MD5: 700e0980e70f76fd1909b2d6433b83d
  • SHA1: 26aa929ba9ffab3820969ce45e10bd69213ba7d
How to quickly detect CZH6AFJ71B.EXE presence? 

  • HKLM\Software\Microsoft\Active Setup\Installed Components\{BBD4D33A-FDD3-DBDB-FBF4-DAD6F7DDF5CE}\StubPath: “C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\CZH6AFJ71B.exe”
  • HKLM\Software\Microsoft\Windows\CurrentVersion\policies\Explorer\run\WinDef: “C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\CZH6AFJ71B.exe”
  • HKLM\Software\Microsoft\Windows\CurrentVersion\Run\WinDef: “C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\CZH6AFJ71B.exe”
  • HKCU\Software\Microsoft\Active Setup\Installed Components\{BBD4D33A-FDD3-DBDB-FBF4-DAD6F7DDF5CE}\StubPath: “C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\CZH6AFJ71B.exe”
  • HKCU\Software\Microsoft\Windows\CurrentVersion\Run\WinDef: “C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\CZH6AFJ71B.exe”
  • C:\Documents and Settings\Administrator\Local Settings\Temp\Custom
  • C:\Documents and Settings\Administrator\Local Settings\Temp\CZH6AFJ71B.exe
  • C:\Documents and Settings\Administrator\Local Settings\Temp\data.dat
  • C:\Documents and Settings\Administrator\Local Settings\Temp\wmpnetk.exe

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RegRun Security Suite (Good choice for removal and protection)

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Dmitry Sokolov - author of UnHackMe