WORM_HAMWEQ.RJG

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

It drops an AUTORUN.INF file to automatically execute the copies it drops when a user accesses the drives of an affected system.

Arrival Details

This worm 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 the following copies of itself into the affected system:

• %System Root%\RECYCLER\S-1-5-21-1482476501-1644491937-682003330-1013\ise32.exe

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

Propagation

This worm creates the following folders in all removable drives:

• {Drive Letter}\RECYCLER

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

• {Drive Letter}\RECYCLER\S-1-5-21-1482476501-1644491937-682003330-1013\ise32.exe

It drops an AUTORUN.INF file to automatically execute the copies it drops when a user accesses the drives of an affected system.

The said .INF file contains the following strings:

[autorun]
open=RECYCLER\S-1-5-21-1482476501-1644491937-682003330-1013\ise32.exe
ICON=%SystemRoot%\system32\SHELL32.dll,4
action=Open folder to view files
shell\open=Open
shell\open\command=RECYCLER\S-1-5-21-1482476501-1644491937-682003330-1013\ise32.exe
shell\open\default=1

Dropping Routine

This worm drops the following files:

• %System Root%\RECYCLER\S-1-5-21-1482476501-1644491937-682003330-1013\Desktop.ini
• {Drive Letter}\RECYCLER\S-1-5-21-1482476501-1644491937-682003330-1013\Desktop.ini

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

Other Details

This worm connects to the following possibly malicious URL:

• http://www.u.{BLOCKED}m.info