TSPY_URSNIF.TIBAICK
Trojan.GenericKD.30883558 (BITDEFENDER)
Windows
Threat Type: Trojan Spy
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
Dropped by other malware
This Trojan Spy 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
558,592 bytes
EXE
Yes
27 May 2018
Drops files, Connects to URLs/IPs, Modifies system registry
Arrival Details
This Trojan Spy 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 Trojan Spy drops a copy of itself in the following folders using different file names:
- %Application Data%\Microsoft\{random alphanumeric string}\{random filename}.exe
(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)
It drops the following files:
- %User Temp%\{random 4 digit number}.tmp
- %Application Data%\Mozilla\Firefox\Profiles\{random alphanumeric string}.default\prefs.js
(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)
Autostart Technique
This Trojan Spy modifies the following registry entry(ies) to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
{random alphanumeric string} = %Application Data%\Microsoft\{random alphanumeric string}\{random filename}.exe
Other System Modifications
This Trojan Spy adds the following registry keys:
HKEY_CURRENT_USER\Software\AppDataLow\
Software\Microsoft\{random alphanumeric string}
It adds the following registry entries as part of its installation routine:
HKEY_CURRENT_USER\Software\AppDataLow\
Software\Microsoft\{random alphanumeric string}
Client = {hex data}
HKEY_CURRENT_USER\Software\AppDataLow\
Software\Microsoft\{random alphanumeric string}
TorClient = {hex data}
It modifies the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings
EnableSPDY3_0 = 0
(Note: The default value data of the said registry entry is 1.)
Other Details
This Trojan Spy connects to the following possibly malicious URL:
- http://www.{BLOCKED}.{BLOCKED}/files/AZ.bin
SOLUTION
9.850
14.278.05
27 May 2018
14.279.00
28 May 2018
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\Microsoft\Windows\CurrentVersion\Run
- {random alphanumeric string} = %Application Data%\Microsoft\{random alphanumeric string}\{random filename}.exe
- {random alphanumeric string} = %Application Data%\Microsoft\{random alphanumeric string}\{random filename}.exe
Step 5
Delete this registry key
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\AppDataLow\Software\Microsoft
- {random alphanumeric string}
- {random alphanumeric string}
Step 6
Restore these modified 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\Windows\CurrentVersion\Internet Settings
- From: EnableSPDY3_0 = "0"
To: EnableSPDY3_0 = 1
- From: EnableSPDY3_0 = "0"
Step 7
Search and delete these files
- %Application Data%\Microsoft\{random alphanumeric string}\{random filename}.exe
- %User Temp%\{random 4 digit number}.tmp
- %Application Data%\Mozilla\Firefox\Profiles\{random alphanumeric string}.default\prefs.js
Step 8
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TSPY_URSNIF.TIBAICK. 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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