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TrojanClicker:Win32/Losicoa.A


First posted on 30 April 2015.
Source: Microsoft

Aliases :

There are no other names known for TrojanClicker:Win32/Losicoa.A.

Explanation :

Threat behavior

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

  • %LOCALAPPDATA%\microsoft\internet explorer\recovery\active\{4551a5d8-2e2c-11e4-8379-00db7fa21011}.dat
  • %LOCALAPPDATA%\microsoft\internet explorer\recovery\active\recoverystore.{3885c6cc-2e2c-11e4-8379-00db7fa21011}.dat


It can make various registry changes during its installation, including:

In subkey: HKLM\software\classes\typelib\{1ea4dbf0-3c3b-11cf-810c-00aa00389b71}\1.1\0\win32
Sets value: "(default)"
With data: "\oleacc.dll"



Payload

Clicks on advertisements

This trojan can use your PC to click on online advertisements without your permission or knowledge.

A malicious hacker can earn money out of these clicks by making a website or application appear more popular than it is.



Connects to a remote host

We have seen this threat connect to a remote host, including:
  • doomp3.net 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


Additional information

Creates a mutex

This threat can create one or more mutexes on your PC. For example:

  • ConnHashTable<2248>_HashTable_Mutex
  • Local\!BrowserEmulation!SharedMemory!Mutex
  • Local\Feed Eventing Shared Memory Mutex S-1-5-21-1844237615-2111687655-839522115-500
  • Local\RSS Eventing Connection Database Mutex 000008c8


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 of file SHA1 32a8eb9291107cf145b88d4e3e9aa0b355caef89.

Symptoms

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

  • You see a file similar to:
    • %LOCALAPPDATA%\microsoft\internet explorer\recovery\active\{4551a5d8-2e2c-11e4-8379-00db7fa21011}.dat
    • %LOCALAPPDATA%\microsoft\internet explorer\recovery\active\recoverystore.{3885c6cc-2e2c-11e4-8379-00db7fa21011}.dat
  • You see registry modifications such as:
    • In subkey: HKLM\software\classes\typelib\{1ea4dbf0-3c3b-11cf-810c-00aa00389b71}\1.1\0\win32
      Sets value: "(default)"
      With data: "\oleacc.dll"
  • You see the following mutex:
    • ConnHashTable<2248>_HashTable_Mutex
    • Local\!BrowserEmulation!SharedMemory!Mutex
    • Local\Feed Eventing Shared Memory Mutex S-1-5-21-1844237615-2111687655-839522115-500
    • Local\RSS Eventing Connection Database Mutex 000008c8

Last update 30 April 2015

 

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