WORM_QBOT.JBR
VirTool:Win32/Obfuscator.gen!G (Microsoft), Trojan.Win32.Pincav.cmvh (Kaspersky), RDN/Generic.hra!y (McAfee), W32.Qakbot (Symantec)
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
Threat Type: Worm
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This worm arrives by connecting affected removable drives to a system. It arrives by accessing affected shared networks. 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
270,336 bytes
EXE
Yes
05 Apr 2013
Arrival Details
This worm arrives by connecting affected removable drives to a system.
It arrives by accessing affected shared networks.
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 the following component file(s):
- %Application Data%\Microsoft\{random}\{random}.dll
(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)
It drops the following copies of itself into the affected system:
- %Application Data%\Microsoft\{random}\{random}.exe
(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)
It creates the following folders:
- %Application Data%\Microsoft\{random}
(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)
Autostart Technique
This worm adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
{random} = "%Application Data%\Microsoft\{random}\{random}.exe"
It modifies the following registry entry(ies) to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
{legitimate application} = "%Application Data%\Microsoft\{random}\{random}.exe /c {path and file name of legitimate application}"
(Note: The default value data of the said registry entry is "{path and file name of legitimate application}".)
Propagation
This worm drops the following copy(ies) of itself in all removable drives:
- {random filename}.{random extension}
It uses the following file names for the copies it drops into shared networks:
- {random filename}.{random extension}
Other Details
This worm connects to the following possibly malicious URL:
- zoas.{BLOCKED}v.ua
- olaum.{BLOCKED}v.ua
- {BLOCKED}cn.org
- {BLOCKED}nz.net
- {BLOCKED}mausj.org
- {BLOCKED}tkrich.net
- {BLOCKED}carusled.org
NOTES:
It drops the shortcut link {random}.LNK in all shared networks or removable drives in order to automatically execute its dropped copy.