TROJ_HACLINE.A

October 09, 2012
 Analysis by: Sabrina Lei Sioting
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Dropped by other malware

This Trojan may be dropped by other malware.

It uses a list of passwords to gain access to password-protected shares.

It hacks a computer by running a command line.

  TECHNICAL DETAILS

File Size:

30,208 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

06 Mar 2009

Payload:

Compromises system security

Arrival Details

This Trojan may be dropped by the following malware:

  • WORM_MUMU.B

Propagation

This Trojan uses the following list of passwords to gain access to password-protected shares:

  • %null%
  • %username%
  • %username%12
  • %username%123
  • %username%1234
  • 123
  • 1234
  • 12345
  • 123456
  • 1234567
  • 12345678
  • 654321
  • 54321
  • 1
  • 111
  • 11111
  • 111111
  • 11111111
  • 000000
  • 00000000
  • 888888
  • 88888888
  • 5201314
  • pass
  • passwd
  • password
  • sql
  • database
  • admin
  • root
  • secret
  • oracle
  • sybase
  • test
  • server
  • computer
  • Internet
  • super
  • user
  • manager
  • security
  • public
  • private
  • default
  • 1234qwer
  • 123qwe
  • abcd
  • abc123
  • 123abc
  • abc
  • 123asd
  • asdf
  • asdfgh
  • !@#$
  • !@#$%
  • !@#$%^
  • !@#$%^&
  • !@#$%^&*
  • !@#$%^&*(
  • !@#$%^&*()
  • KKKKKKK

Hacktool Routine

This Trojan hacks a computer by running a command line.

NOTES:

This malware uses a list of predefined weak passwords to attack SMB shares and looks for the default Admin share, Admin$.

The passwords mentioned above are retrieved in the file IPCPass.txt.

While scanning the network, it saves machines that are vulnerable to brute force attack in a separate log file named IPCFind.txt. The format of the log file is as follows:

  • {IP Address} {Username}/{Password}

It connects to each vulnerable system using the following command:

  • Net use \\%target_pc% "%password%" /u:"%user%"

Where:

  • %target_pc% - IP address of the remote PC
  • %password% - password from ipcfind.txt
  • %user% - username from ipcfind.txt

  SOLUTION

Minimum Scan Engine:

9.200

VSAPI OPR PATTERN File:

5.883.00

VSAPI OPR PATTERN Date:

06 Mar 2009

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

Remove malware files dropped/downloaded by TROJ_HACLINE.A

     WORM_MUMU.B

Step 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_HACLINE.A. 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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