TSPY_COINSTEAL.B
Trojan.Win32.CoinStealer.i (Kaspersky), Win32/PSW.CoinStealer.D trojan (ESET), Troj/BitSteal-A (Sophos)
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
Threat Type: Spyware
Destructiveness: No
Encrypted: Yes
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.
TECHNICAL DETAILS
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 the following copies of itself into the affected system and executes them:
- %User Temp%\TibanneSocket.exe
(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.)
It drops the following component file(s):
- %User Temp%\revsecurity.dll
(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.)
Stolen Information
This spyware sends the gathered information via HTTP POST to the following URL:
- https://{BLOCKED}.{BLOCKED}.242.145/cgi-bin/sync.cgi
- https://{BLOCKED}.{BLOCKED}.242.145/cgi-bin/conf.cgi
NOTES:
This spyware searches for the following files:
- %Application Data%\Bitcoin\bitcoin.conf
- %Application Data%\Bitcoin\wallet.dat
It deletes the following files once it has searched all available drives:
- %User Temp%\TibanneSocket.exe
- %User Temp%\revsecurity.dll
SOLUTION
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
Terminate the malware/grayware/spyware process:
- If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
- If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.
Step 3
Search and delete these files
- %User Temp%\TibanneSocket.exe
- %User Temp%\revsecurity.dll
Step 4
Scan your computer with your Trend Micro product to delete files detected as TSPY_COINSTEAL.B. 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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