TSPY_BEBLOH.MJN
Trojan.Bebloh (Symantec); Troj/Shiotob-J (Sophos); TrojanSpy:Win32/Shiotob.B (Microsoft);
Windows
Threat Type: Spyware
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
Downloaded from the Internet
This spyware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It executes then deletes itself afterward.
It does not have any propagation routine.
It does not have any backdoor routine.
It connects to certain websites to send and receive information. However, as of this writing, the said sites are inaccessible. It gathers information and reports it to its servers.
TECHNICAL DETAILS
226,267 bytes
EXE
Yes
21 Dec 2015
Connects to URLs/IPs
Arrival Details
This spyware 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 spyware executes then deletes itself afterward.
It adds the following mutexes to ensure that only one of its copies runs at any one time:
- Global\Uz{hex values}
It injects codes into the following process(es):
- explorer.exe
Other System Modifications
This spyware adds the following registry keys:
HKEY_CURRENT_USER\Software\{random key}
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Ext\
Settings\{GUID}
It adds the following registry entries:
HKEY_CURRENT_USER\Software\{random key}
{random value} = "0"
HKEY_CURRENT_USER\Software\{random key}
(Default) = "{hex values}"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Ext\
Settings\{GUID}
Flags = "1"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Ext\
Settings\{GUID}
Version = "*"
Propagation
This spyware does not have any propagation routine.
Backdoor Routine
This spyware does not have any backdoor routine.
Other Details
This spyware connects to the following URL(s) to check for an Internet connection:
- www.google.com
It connects to the following website to send and receive information:
- {Pseudo-random domain}.net/itc/
- {Pseudo-random domain}.com/itc/
It does the following:
- It does not proceed to its malicious routine if it detects that it is running in a VMWare environment
- It deletes the cache files of Google Chrome and Mozilla Firefox
- It injects code and hooks the APIs of the following processes to monitor user's online activities and steal sensitive information, such as user names and passwords:
• iexplore.exe
• explorer.exe
• myie.exe
• firefox.exe
• ftpte.exe
• coreftp.exe
• filezilla.exe
• TOTALCMD.EXE
• cftp.exe
• FTPVoyager.exe
• SmartFTP.exe
• WinSCP.exe
• chrome.exe
• opera.exe
However, as of this writing, the said sites are inaccessible.
It gathers the following information and reports it to its servers:
- Machine Name
- OS Version
- Product ID
- Install Date
- Internet Explorer File Version
- Volume Serial Number
- Internal IP Address
- Email addresses from Windows Address Book (WAB)
- FTP credentials
NOTES:
This spyware looks for the window class name Shell_TrayWnd and then opens the process associated with the said window to execute its code. It does this routine to inject its code to explorer.exe, avoiding HIPS detection.
SOLUTION
9.800
12.226.06
22 Dec 2015
12.227.00
23 Dec 2015
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
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
Step 3
Restart in Safe Mode
Step 4
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_CURRENT_USER\Software\{random key}
- (Default) = "{hex values}"
- (Default) = "{hex values}"
- In HKEY_CURRENT_USER\Software\{random key}
- {random value} = "0"
- {random value} = "0"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{GUID}
- Flags = "1"
- Flags = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{GUID}
- Version = "*"
- Version = "*"
Step 5
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TSPY_BEBLOH.MJN. 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.
Step 6
The following created files/folders/registry keys/registry entries cannot be identified by the user since there are no reference values in the created key. The only way it can be identified is by comparing the present system information with a backup. Note that the said components do not have to be deleted since it won't be harmful to the system.
Step 7
Scan your computer with your Trend Micro product to delete files detected as TSPY_BEBLOH.MJN. 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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