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Bkdr_pcclient.yp

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Special Forums Cybersecurity Malware Advisories (RSS) Bkdr_pcclient.yp
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Old 02-05-2008
Bkdr_pcclient.yp
This backdoor is a .DLL component dropped by other malware to serve as its backdoor component. It is usually dropped in the system folder and registered as system service to ensure its automatic execution every system startup. It is then injected as thread into running processes to remain memory resident and makes it difficult to terminate.
This backdoor connects to a certain URL via a random port and executes commands locally on affected machines.
However, it requires its main component to run properly.


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LEARN ABOUT OSF1

anno

anno(1) 						      General Commands Manual							   anno(1)

NAME

       anno - annotate messages (only available within the message handling system, mh)

SYNOPSIS

       anno [+folder] [msgs] [-component field] [-help] [-[no]inplace] [-text body]

OPTIONS

       Specifies  the  name of the header field which anno adds. It should be a valid RFC 822-style message field name, which means that it should
       consist of alphanumeric characters or dashes only. If you do not supply this option, anno will prompt you for the  field  name.	 Prints  a
       list  of  the  valid  options to this command.  The -inplace switch causes annotation to be done in place in order to preserve links to the
       annotated message.  Allows you to add a header field containing text to the message.  The anno command will create a second header field on
       the  message, containing the text that you specify. If the text contains a space, you must enclose the text in double quotes ("). If you do
       not supply this option, anno adds only one field, which contains the date of the annotation.

       The default settings for this command are:

       +folder defaults to the current folder msgs defaults to the current message -noinplace

DESCRIPTION

       The anno command annotates a message by adding one or more header fields to the message.

       The anno command allows you to choose the name of the header field which you add. It records the date at which the  message  is	annotated,
       and allows you to add an additional field containing text, if you wish.

       You can use anno with dist, forw, and repl, to keep track of how you have distributed, forwarded, or replied to messages.

       By  default,  anno  annotates  the current message in the current folder. You can select another message by using the msg and +folder argu-
       ments. You can also annotate more than one message, or a range of messages.

PROFILE COMPONENTS

       Path: To determine your Mail directory

EXAMPLES

       This example annotates message number 1 in the folder +test.  The -component option specifies the name of the header field: % anno 1  +test
       -component Forwarded

	      The following field is added to the message header: Forwarded: Tue, 08 Jan 1991 16:10:06 +0000 The next example shows how to use the
	      -text option to add an additional field: % anno -component Forwarded -text "to David - as requested"

	      The following lines are added to the message header: Forwarded: Tue, 08 Jan 1991 16:13:27 +0000 Forwarded: to David -  as  requested
	      The  final  example  shows  how anno prompts for the name of the header field, if the -component option is not supplied: % annoEnter
	      component name: forwarded

	      The following line is added to the message: forwarded: Tue, 08 Jan 1991 16:21:58 +0000

FILES

       The user profile.

SEE ALSO

       dist(1), forw(1), repl(1)

																	   anno(1)