WORM_DORKBOT.QMU
Worm:Win32/Dorkbot.AT(Microsoft), W32.IRCBot.BPQ(Norton), Trojan.Win32.Yakes(Ikarus)
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Worm
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
Propagates via instant messaging applications, Downloaded from the Internet, Dropped by other malware
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.
TECHNICAL DETAILS
69,632 bytes
EXE
Yes
21 May 2013
Connects to URLs/IPs, Sends messages
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 adds the following mutexes to ensure that only one of its copies runs at any one time:
- {CLSID}
NOTES:
Once executed, it searches for the following processes if running in the system:
- skype.exe
- msmsgs.exe
- msnmsgr.exe
- qip.exe
- googletalk.exe
It sends the following shortened links to user's contacts found on the mentioned applications:
- http://{BLOCKED}o.{BLOCKED}l/ILGdM?foto={email address of receiver}
- http://{BLOCKED}o.{BLOCKED}l/ILGdM?png={email address of receiver}
- http://{BLOCKED}o.{BLOCKED}l/wwo7s?fotos={email address of receiver}
- http://goo.gl/PVwkU?skype={email address of receiver}
- http://{BLOCKED}o.{BLOCKED}l/WKyb5?profil={email address of receiver}
The URL leads the user to a file uploaded in 4shared. The file is possibly an updated copy of the malware.
However, as of this writing, the account where the file is uploaded is already suspended.
SOLUTION
9.300
9.940.07
25 May 2013
9.941.00
26 May 2013
Step 1
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Step 2
Identify and terminate files detected as WORM_DORKBOT.QMU
- Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
- If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
- If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.
Step 3
Scan your computer with your Trend Micro product to delete files detected as WORM_DORKBOT.QMU. 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.
Did this description help? Tell us how we did.