BKDR_CYCBOT.UITY
Backdoor:Win32/Cycbot.G (Microsoft); Trojan.Win32.Jorik.Gbot.qxy (Kaspersky)
Windows 2000, Windows XP, Windows Server 2003
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Backdoor
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It connects to a website to send and receive information.
TECHNICAL DETAILS
287,232 bytes
EXE
25 Nov 2011
Arrival Details
This backdoor 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 backdoor drops the following copies of itself into the affected system:
- %Program Files%\LP\{random}\{random}.exe
(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.)
It drops the following non-malicious file:
- %User Profile%\Application Data\{random}\{random}
(Note: %User Profile% is the current user's profile folder, which is usually C:\Windows\Profiles\{user name} on Windows 98 and ME, C:\WINNT\Profiles\{user name} on Windows NT, and C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003.)
It creates the following folders:
- %User Profile%\Application Data\{random}
- %Program Files%\{random}
- %Program Files%\LP
- %Program Files%\LP\{random}
(Note: %User Profile% is the current user's profile folder, which is usually C:\Windows\Profiles\{user name} on Windows 98 and ME, C:\WINNT\Profiles\{user name} on Windows NT, and C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003.. %Program Files% is the default Program Files folder, usually C:\Program Files.)
Other System Modifications
This backdoor adds the following registry keys:
HKEY_CURRENT_USER\0open
It adds the following registry entries as part of its installation routine:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings
ProxyServer = "http={BLOCKED}7.{BLOCKED}.0.1:59798"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
{random}.exe = "%Program Files%\LP\{random}\{random}.exe"
It modifies the following registry key(s)/entry(ies) as part of its installation routine:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings
ProxyEnable = "1"
(Note: The default value data of the said registry entry is 0.)
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Hardware Profiles\0001\Software\
Microsoft\windows\CurrentVersion\
Internet Settings
ProxyEnable = "1"
(Note: The default value data of the said registry entry is 0.)
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Hardware Profiles\Current\Software\
Microsoft\windows\CurrentVersion\
Internet Settings
ProxyEnable = "1"
(Note: The default value data of the said registry entry is 0.)
HKEY_CURRENT_CONFIG\Software\Microsoft\
windows\CurrentVersion\Internet Settings
ProxyEnable = "1"
(Note: The default value data of the said registry entry is 0.)
It deletes the following registry keys:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\wscsvc
Backdoor Routine
This backdoor connects to the following websites to send and receive information:
- {BLOCKED}accesss.com
- {BLOCKED}amaforyou.com
- {BLOCKED}ipitour.com
- {BLOCKED}rdelis.com
- {BLOCKED}4image.com
- {BLOCKED}t4you.com
- {BLOCKED}ontainer.com
- {BLOCKED}eurosys.com
- {BLOCKED}bletpcforme.com
- {BLOCKED}ldonlines.com
- {BLOCKED}tfrommains.com
- {BLOCKED}reportsystem.com