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Locknut how to fix it


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Locknut can be manually downloaded or spread as a SIS installation package named Patch.SIS or Patch_v1.SIS. It has no means of propagating by itself.

When it is installed in a compromised device, it drops the following files:


These files contain data crafted in such a way that, when interpreted by the phone, causes the phone’s special buttons to be locked or disabled. Only the phone’s alpha-numeric buttons remain operational.

SymbOS/Locknut also drops a copy of the SIS installation package in the phone’s C drive:


It affects phones running the Symbian S60 platform. Some phones affected by SymbOS/Cabir include the following:

Nokia 3650, 3600
Nokia 3660, 3620
Nokia 6600
Nokia 6620
Nokia 7610
Nokia 7650
Nokia N-Gage
Panasonic X700
Sendo X
Siemens SX1

The following message is displayed by this malware during installation:

Wonderful patch by artik100 :)

Manual Disinfection

To disinfect a compromised device, it is necessary to reformat the C drive. All data saved in the C drive will be lost during a format.

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