TROJ_CRILOCK.ITR
Trojan:Win32/Crilock.A (Microsoft), Trojan.Ransomcrypt.F (Symantec), Ransom-O (McAfee), W32/Blocker.CJQD!tr (Fortinet), Trojan-Ransom.Win32.Blocker (Ikarus), Win32/Filecoder.BQ trojan (ESET)
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan 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 Trojan 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 drops the following copies of itself into the affected system and executes them:
- %Application Data%\{random file name}.exe
(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)
Autostart Technique
This Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
CryptoLocker = "%Application Data%\{random file name}.exe"
Other Details
This Trojan connects to the following possibly malicious URL:
- {pseudorandom domain}.biz
- {pseudorandom domain}.ru
- {pseudorandom domain}.net
- {pseudorandom domain}.info
- {pseudorandom domain}.co.uk
- {pseudorandom domain}.com
- {pseudorandom domain}.org