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Worm.Muha!sd6

Posted: February 18, 2010

Worm.Muha!sd6 is a network-aware worm that attempts to replicate across an existing network. Worm.Muha!sd6 can also spread using Windows networking APIs, MAPI functions or email clients such as Microsoft Outlook. Worm.Muhasd6 often creates unknown email messages with a harmful program attached and can sometimes attach itself to outgoing email messages. Worm.Muha!sd6 also uses a misleading message which suggests that the recipient should open the attachment to see something interesting or important. Worm.Muha!sd6 should not be allowed to spread and must be removed from the infected system immediately.

Aliases

W32/Autorun.worm.h (McAfee)
WORM_AHKHEAP.A (Trend Micro)
W32/AHKHeap-A (Sophos)
Worm:Win32/Muha.A (Microsoft)
Trojan.Win32.AutoHotKey (Ikarus)
Win32/Muha.worm.462050 (AhnLab)

File System Modifications

  • The following files were created in the system:
    # File Name
    1 %Temp%\MicrosoftPowerPoint
    2 c:\heap41a
    3 c:\heap41a\offspring

Registry Modifications

  • The following newly produced Registry Values are:
    HKEY..\..\..\..{Subkeys}[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\SHOWALL]HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\..{RunKeys}[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run]
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