WORM_BONDAT.L

April 05, 2017
 Analysis by: Janus Agcaoili
 ALIASES:

Worm:JS/Bondat.L (Microsoft), JS/Bondat-AP (Sophos), JS/Bondat.t (McAfee)

 PLATFORM:

Windows

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

  • Threat Type: Worm

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Worm arrives via removable drives. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size:

80,953 bytes

File Type:

JS

Memory Resident:

No

Initial Samples Received Date:

23 Dec 2017

Arrival Details

This Worm arrives via removable drives.

It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Worm drops a copy of itself in the following folders using different file names:

  • %Application Data%\{random}\{random}.js

(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

Propagation

This Worm creates the following folders in all removable drives:

  • {Removable Drive Letter}:\Drive
  • {Removable Drive Letter}:\Drive\424

It drops the following copy(ies) of itself in all removable drives:

  • {Removable Drive Ltter}:\Drive\424\kapecudw.js

Dropping Routine

This Worm drops the following files:

  • %Application Data%\{random}\{random}
  • {Removable Drive Letter}:\Drive.bat

(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

Other Details

This Worm connects to the following URL(s) to check for an Internet connection:

  • www.microsoft.com

It connects to the following possibly malicious URL:

  • http://{BLOCKED}.{BLOCKED}.31.18

It does the following:

  • Copies "wsrcipt.exe" to the following file to execute its dropped copy:
    • %Application Data%\{random}.exe

(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

13.112.02

FIRST VSAPI PATTERN DATE:

23 Dec 2016

VSAPI OPR PATTERN File:

13.113.00

VSAPI OPR PATTERN Date:

24 Dec 2016

NOTES:

Trend customers:

    Keep your pattern and scan engine files updated. Trend Micro antivirus software can clean or remove most types of computer threats. Malware, though, such as Trojans, scripts, overwriting viruses and joke programs which are identified as uncleanable, should simply be deleted.

All Internet users:

  • Use HouseCall - the Trend Micro online threat scanner to check for malware that may already be on your PC.
  • Catch malware/grayware before they affect your PC or network. Secure your Web world with Trend Micro products that offer the best anti-threat and content security solutions for home users, corporate users, and ISPs. Go here for more information on Trend Micro products that fit your needs.


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