TSPY_PIRMINAY.PVN
Trojan.Win32.Pirminay (Ikarus)
Windows
Threat Type: Spyware
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
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 deletes itself after execution.
TECHNICAL DETAILS
1,795,072 bytes
EXE
Yes
08 Sep 2015
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 and executes the following files:
- %System%\{random filename}.exe
- %User Temp%\~unins{random numbers}.bat
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.. %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.)
Autostart Technique
This spyware adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\policies\
Explorer\Run
{random letters} = "%System%\{random filename}.exe"
Other System Modifications
This spyware adds the following registry keys:
HKEY_CURRENT_USER\Software\{random letters}
HKEY_LOCAL_MACHINE\Software\{random letters}
It adds the following registry entries:
HKEY_CURRENT_USER\Software\{random letters}
{random letters} = "{hex value}"
HKEY_LOCAL_MACHINE\Software\{random letters}
{random letters} = "{hex value}"
Other Details
This spyware connects to the following possibly malicious URL:
- http://{BLOCKED}.{BLOCKED}.189.62/signin
- http://{BLOCKED}.{BLOCKED}.189.62/default.htm
- http://www.{BLOCKED}nedmedia.com/version2.XML
- http://{BLOCKED}.{BLOCKED}.189.62/sports/feature/Forward
- dompro.mars.{BLOCKED}ns.com
- dompro.earth.{BLOCKED}ns.com
- dompro.venus.{BLOCKED}ns.com
- dompro.mercury.{BLOCKED}ns.com
- {BLOCKED}ewild.com
It deletes itself after execution.
SOLUTION
9.750
11.907.00
09 Sep 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
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\Windows\CurrentVersion\policies\Explorer\Run
- {random letters} = "%System%\{random filename}.exe"
- {random letters} = "%System%\{random filename}.exe"
Step 4
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
- {random letters}
- {random letters}
- In HKEY_LOCAL_MACHINE\Software
- {random letters}
- {random letters}
Step 5
Search and delete this file
- %System%\{random filename}.exe
- %User Temp%\~unins{random numbers}.bat
Step 6
Scan your computer with your Trend Micro product to delete files detected as TSPY_PIRMINAY.PVN. 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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