Analysis by: jasperm
 PLATFORM:

Windows 2000, XP, Server 2003

 OVERALL RISK RATING:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

This malicious DLL file may be installed as a service DLL to enable its automatic execution at startup.

This backdoor arrives as a file that exports the functions of other malware/grayware. It may be dropped by other malware.

  TECHNICAL DETAILS

File Size: 30,208 bytes
File Type: PE
Memory Resident: Yes
Initial Samples Received Date: 10 Feb 2011

Arrival Details

This backdoor arrives as a file that exports the functions of other malware/grayware.

It may be dropped by other malware.

Other Details

This backdoor does the following:

  • Accesses the following website to send system information such as machine name, IP address and OS version:
    • {BLOCKED}1.{BLOCKED}8.25.132
  • Accesses the following website to read a data which it uses to form the IP address it possibly connects to receive commands:
    • http://www.{BLOCKED}h.cc/blog/wtomoot82/703518
    It then tries to connect to the following IP address to possibly receive commands:
    • {BLOCKED}1.{BLOCKED}0.126.11
    However, as of this writing, this URL is inaccessible.

  SOLUTION

Minimum Scan Engine: 8.900
VSAPI PATTERN File: under testing

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Scan your computer with your Trend Micro product and note files detected as BKDR_BADPUCK.C

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

Search and delete the file detected as BKDR_BADPUCK.C

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden files in the search result.

Step 5

Scan your computer with your Trend Micro product to delete files detected as BKDR_BADPUCK.C. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.


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