TSPY_ZBOT.JNESO
PWS:Win32/Zbot!CI(Microsoft),Mal/Zbot-PQ(Sophos),Trojan-PWS.Win32.Zbot.Y(Ikarus)
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Spyware
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
Downloaded from the Internet, Dropped by other malware
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.
However, as of this writing, the said sites are inaccessible.
TECHNICAL DETAILS
194560 bytes
EXE
Yes
19 Jan 2016
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 drops a copy of itself in the following folders using different file names:
- %APPDATA%\[Random folder name]\[Random Filename]
It adds the following mutexes to ensure that only one of its copies runs at any one time:
- Global\{GUID}
- Local\{GUID}
It injects codes into the following process(es):
- explorer.exe
- dwm.exe
- taskhost.exe
- taskeng.exe
- wscntfy.exe
- ctfmon.exe
- rdpclip.exe
Other System Modifications
This spyware adds the following registry entries:
HKCU\SOFTWARE\Microsoft{random}
{random} = ""
Information Theft
This spyware accepts the following parameters:
- -f
- -z
- -n
- -v
Other Details
This spyware connects to the following possibly malicious URL:
- http://www1.{BLOCKED}xstatistics.com/stats/image.php|file=logo_d.gif
- http://www1.{BLOCKED}sgood.ru/stats/image.php|file=logo_d.gif
- http://www1.{BLOCKED}xopen.com/stats/image.php|file=logo_d.gif
However, as of this writing, the said sites are inaccessible.
NOTES:
It lowers the Internet Explorer security settings by adding following registry entries:
HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\INTERNET EXPLORER\PHISHINGFILTER
ENABLED = 0
HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\INTERNET EXPLORER\PHISHINGFILTER
ENABLEDV8 = 0
HKCU\Software\Microsoft\Internet Explorer\Privacy
CleanCookies = 0x00000000
HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0
1609 = 0x00000000
HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1
1406 = 0x00000000
HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1
1609 = 0x00000000
HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2
1609 = 0x00000000
HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3
1406 = 0x00000000
HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3
1609 = 0x00000000
HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4
1406 = 0x00000000
HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4
1609 = 0x00000000
SOLUTION
9.800
12.300.05
27 Jan 2016
12.301.00
28 Jan 2016
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
Reset Internet security settings
Step 5
Delete these registry values
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this only if you know how to or you can seek your system administrator’s help. You may also check out this Microsoft article first before modifying your computer's registry.
- In HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\INTERNET EXPLORER\PHISHINGFILTER
- ENABLED = 0
- ENABLED = 0
- In HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\INTERNET EXPLORER\PHISHINGFILTER
- ENABLEDV8 = 0
- ENABLEDV8 = 0
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Privacy
- CleanCookies = 0x00000000
- CleanCookies = 0x00000000
Step 6
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TSPY_ZBOT.JNESO. 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 7
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.
- In HKEY_CURRENT_USER\SOFTWARE\Microsoft{random}
- {random} = ""
- {random} = ""
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