BKDR_POISON.BKK
Backdoor:Win32/Poison.E (Microsoft)
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Backdoor
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
Dropped by other malware, Downloaded from the Internet, Spammed via email
This backdoor arrives as an attachment to email messages spammed by other malware/grayware or malicious users. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It does not have any propagation routine.
It does not have any downloading capability.
TECHNICAL DETAILS
Port 80
77,824 bytes
EXE
Yes
04 May 2012
Compromises system security, Connects to URLs/IPs
Arrival Details
This backdoor arrives as an attachment to email messages spammed by other malware/grayware or malicious users.
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 backdoor adds the following mutexes to ensure that only one of its copies runs at any one time:
- ((*HKG^%3
Autostart Technique
This backdoor adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Active Setup\Installed Components\{GUID}
StubPath = "{malware path and filename}"
Propagation
This backdoor does not have any propagation routine.
Backdoor Routine
This backdoor opens the following port(s) where it listens for remote commands:
- TCP port 443
It connects to the following URL(s) to send and receive commands from a remote malicious user:
- jj.{BLOCKED}ndarydns.com
Download Routine
This backdoor does not have any downloading capability.
Other Details
Based on analysis of the codes, it has the following capabilities:
- Capture screen, audio, and webcam
- Log keystrokes
- List active ports
- Manage open windows
- Manage passwords
- Manage registry, processes, services, devices, and installed applications
- Perform multiple simultaneous transfers
- Perform remote shell
- Relay server
- Search files
- Share servers
- Update, restart, terminates itself
NOTES:
This backdoor does not have rootkit capabilities.
This backdoor does not exploit any vulnerability.
SOLUTION
9.200
9.121.00
19 May 2012
Step 1
For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.
Step 2
Terminate a process file/s detected as BKDR_POISON.BKK
*Note: If the detected file/s is/are not displayed in theWindows Task Manager, continue doing the next steps.
Step 3
Delete this registry value
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{GUID}
- StubPath = "{malware path and filename}"
- StubPath = "{malware path and filename}"
Step 4
Scan your computer with your Trend Micro product to delete files detected as BKDR_POISON.BKK. 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.
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