Home / malwarePDF  

Worm:Win32/Copali.C


First posted on 15 April 2015.
Source: Microsoft

Aliases :

There are no other names known for Worm:Win32/Copali.C.

Explanation :

Threat behavior

Installation
This threat can create files on your PC, including:

  • c:\'\'\csrss.exe
  • c:\'\csrss.exe
  • c:\'\word.exe



This threat also creates desktop.ini in c:\'\.



It modifies the registry so that it runs each time you start your PC. For example:

In subkey: HKCU\software\microsoft\windows\currentversion\run

Sets value: "Microsoft Office Outlook"
With data: "c:\'\'\csrss.exe"



Spreads through...


Network and removable drives

This worm can spread by creating files on network or removable drives, such as USB flash drives. For example:

  • :\'\csrss.exe
  • :\softwares keys.exe
  • :\assignments.exe
  • :\business ideas.exe
  • :\'\desktop.ini


It also creates an autorun.inf file in the root folder of the removable drive. The file has instructions to launch the malware automatically when the removable drive is connected to a PC with the Autorun feature turned on.

This is a common way for malware to spread. However, autorun.inf files on their own are not necessarily a sign of infection; they are also used by legitimate programs.



Payload


Downloads and runs files (including updates or other malware)

The threat downloads a file from www.sxdc.co.cc/backups/sql.zip and saves the file in the c:\'\.

Connects to a remote host

We have seen this threat connect to a remote host, including:
  • www.sxdc.co.cc using port 80
Malware can connect to a remote host to do any of the following:
  • Check for an Internet connection
  • Download and run files (including updates or other malware)
  • Report a new infection to its author
  • Receive configuration or other data
  • Receive instructions from a malicious hacker
  • Search for your PC location
  • Upload information taken from your PC
  • Validate a digital certificate


We have seen this threat access online content, including:

  • sql.zip


Additional information

Creates a mutex

This threat can create a mutex on your PC. For example:

  • GOOGLEUPDATE.EXE"


It might use this mutex as an infection marker to prevent more than one copy of the threat running on your PC.



This malware description was published using automated analysis.

Symptoms

The following can indicate that you have this threat on your PC:

  • You see a file similar to:
    • c:\'\'\csrss.exe
    • c:\'\csrss.exe
    • c:\'\word.exe
  • You see registry modifications such as:
    • In subkey: HKCU\software\microsoft\windows\currentversion\run
      Sets value: "Microsoft Office Outlook"
      With data: "c:\'\'\csrss.exe"

  • The presence of a mutex such as:
    • GOOGLEUPDATE.EXE"

Last update 15 April 2015

 

TOP

Malware :

Family: