WORM_QBOT.HGR
Backdoor:Win32/Qakbot (Microsoft), Trojan.Win32.Pincav.cmvu (Kaspersky)
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: Yes
In the wild: Yes
OVERVIEW
Propagates via network shares, Via removable drives, Dropped by other malware, Downloaded from the Internet
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
263,168 bytes
EXE
Yes
05 Apr 2013
Downloads files, Steals information, Compromises system security, Hides files and processes, Collects system information
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:
- %Application Data%\Microsoft\{random foldername}\{random filename}.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 foldername}
(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 registers itself as a system service to ensure its automatic execution at every system startup by adding the following registry entries:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\{random}
Type = "10"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\{random}
Start = "2"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\{random}
ErrorControl = "0"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\{random}
ImagePath = "Application Data\Microsoft\{random foldername}\{random filename}.exe"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\{random}
DisplayName = "Remote Procedure Call (RPC) Service"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\{random}
DependOnService = "Dnscache"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\{random}
DependOnGroup = "0"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\{random}
ObjectName = "LocalSystem"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\{random}
ObjectName = "LocalSystem"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\{random}\Security
Security = "{hex values}"
It registers as a system service to ensure its automatic execution at every system startup by adding the following registry keys:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\{random}
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\{random}\Security
Other Details
This worm connects to the following possibly malicious URL:
- zoas.{BLOCKED}v.ua
- olaum.{BLOCKED}v.ua
- {BLOCKED}n.org
- {BLOCKED}nz.net
- {BLOCKED}ausj.org
- {BLOCKED}krich.net
- {BLOCKED}carusled.org